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Annotation Quickstart

+

Before following the quickstart, it could be helpful to skim the User Interface Guide

+

Single Frame Detections

+

How to quickly create multiple detections on a single image frame.

+
    +
  1. Click (creation settings menu) in the Track List area.
      +
    1. From the Mode dropdown, choose Detection.
      2. +
    2. From the Type dropdown, choose or enter a default name that all new detections will have. If the type doesn't exist yet, enter a name to create a new one.
      3. +
    3. Turn on the Continuous Mode switch if you would like to automatically re-enter the creation state so you can click-and-drag repeatedly to quickly create many detections.
      4. +
    +
    2. +
  2. Enter the annotation creation state by clicking Detection or pressing the N key.
    3. +
  3. Create your first detection by clicking and dragging to draw a rectangle.
    4. +
  4. If you are in continuous mode, click and drag again to create the next detection.
      +
    1. Press Esc to exit continuous creation mode.
      2. +
    +
    5. +
+

Single Detection Mode Demo

+

The demo below shows how to use Detection mode to quickly create numerous detections of the same type.

+

Detection Mode Demo

+

Track Annotations

+

How to quickly create track annotations for a video or image sequence.

+

Interpolation Mode

+

Linear interpolation is a kind of spatio-temporal annotation that allows the inference of bounding boxes between keyframes. Interpolation mode is the fastest and easiest way to generate track annotations.

+

Interpolation editing for existing tracks will only be enabled on tracks that span more than one frame. It is enabled on new tracks by default.

+
    +
  1. Click (creation settings menu) in the Track List area.
      +
    1. From the Mode dropdown, choose Track.
      2. +
    2. Also ensure that the Interpolate switch is turned on.
      3. +
    +
    2. +
  2. Enter the annotation creation state by clicking Track or pressing the N key.
    3. +
  3. Create your first detection by clicking and dragging to draw a rectangle around the object you want to track.
    4. +
  4. You can now go forward one or more frames by pressing F or Right or by using the Timeline controls and an outline of the previous annotation will remain.
      +
    1. Interpolated Editing
      2. +
    +
    5. +
  5. To set another keyframe, either move or resize the transparent annotation or press K. There are also controls on for the currently selected track to add/remove keyframes.
      +
    1. and will allow you to add and remove the current keyframe.
      2. +
    2. and will turn on or off interpolation for the current keyframe interval region you are in.
      3. +
    3. Interpolate Track Settings
      4. +
    +
    6. +
+

Visualizing interpolated tracks

+

Click Events in the Timeline controls to see where interpolation occurs and where the keyframes are located.

+
    +
  • Keyframes are indicated by solid rectangular blue tick marks in the highlighted track.
    • +
  • Interpolated regions are indicated by a thin yellow line between keyframes.
    • +
  • Gap regions are indicated by areas with neither interpolated frames nor keyframes. Typically means that a track is off-camera or occluded.
    • +
+

Interpolated EventViewer

+

Interpolation Mode Demo

+

Detection Mode Demo

+

Advance Frame Mode

+

This mode keeps you editing the same track while automatically advancing the frame each time a detection is drawn. In most cases interpolation mode will be easier.

+
    +
  1. Click (creation settings menu) in the Track List area.
      +
    1. From the Mode dropdown, choose Track.
      2. +
    2. Also ensure that the Interpolate switch is turned off.
      3. +
    +
    2. +
  2. Enter the annotation creation state by clicking Track or pressing the N key.
    3. +
  3. Create your first detection by clicking and dragging to draw a rectangle around the object you want to track.
    4. +
  4. Now each time an individual detection is drawn the frame will automatically advance to the next frame. Press Esc to end creation of the track.
    5. +
+

Advance Frame Mode Demo

+

The demo below shows how to use AdvanceFrame mode to travel through the video while creating annotations.

+

Detection Mode Demo

+

Head Tail Annotations

+

Adding Head/Tail points to existing annotations

+
    +
  1. Right-click an existing detection to enter edit mode.
    2. +
  2. Enter head/tail creation mode
      +
    1. In the Edit bar, click
      2. +
    2. Or Press H to create a head point.
      3. +
    3. Or press T to create a tail point.
      4. +
    +
    3. +
  3. The mouse cursor will become a crosshair. Click in the annotator to place each point.
    4. +
  4. Once the first marker is placed it automatically transitions to the second marker. If you start with head, the second one will be the tail and vice versa.
    5. +
+

Creating new annotations using Head/Tail points

+

You can create a track by starting with a head/tail annotation or just a single point.

+
    +
  1. Enter the annotation creation state by clicking Track or pressing the N key.
    2. +
  2. In the Edit bar, click to switch to head/tail creation mode or press H, T, or 3.
    3. +
  3. The mouse cursor will become a crosshair. Click in the annotator to place each point.
    4. +
  4. Press Esc to finish creation after one or both points have been placed.
    5. +
+

Other notes on Head/Tail

+
    +
  • +

    The head point is denoted by a filled circle, while the tail point is denoted by a hollow circle.

    +

    Tail Mode

    +
    • +
  • +

    You don't have to place both markers. Press Esc on your keyboard at anytime to exit out of the line creation mode.

    +
    • +
  • You can modify an existing head/tail marker by placing the annotation into 'Edit Mode' and then selecting the line tool from the editing options.
    • +
  • You can delete a head/tail pair by selecting a detection with existing markers, entering edit mode, and clicking Delete Linestring
    • +
+

Fish Head Tail Demo

+

Head Tail Annotation Demo

+

Polygon Annotations

+

Every track is required to have a bounding box, but a polygon region may be added. When a polygon is created or edited it will generate or adjust the bounding box to fit the size of the polygon.

+

Polygon Creation

+
    +
  1. Enter the annotation creation state by clicking Track or pressing the N key.
    2. +
  2. In the Edit bar, click or press 2 to enter polygon creation mode.
    3. +
  3. Place each point on the polygon by clicking.
    4. +
  4. Right-Click to automatically close the polygon or press Esc to cancel creation.
    5. +
+

Polygon Editing

+
    +
  1. Right click an annotation to enter edit mode.
    2. +
  2. In the Edit bar, click or press 2 to enter polygon edit mode.
    3. +
  3. Click and drag any large circle handle to move it. This will move the point to a new position and recalculate the bounding box.
    4. +
  4. Click and drag any small circle handle to create new points. This can be used to adjust the polygon and make it appear smoother.
    5. +
  5. To delete the whole polygon, in the Edit bar, click Del polygon
    6. +
  6. To delete a single keypoint, click its handle then click Del Point N
    7. +
+

Polygon Demo

+

Polygon Demo

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User Interface Guide Introduction

+

This documentation section provides a reference guide to the annotation interface organized by screen region.

+

UI Full View Highlighted

+
    +
  • Navigation and Editing Bar - Controls to return back to browser as well as perform higher level functions such as running pipelines. Save Button. Controls the viewing of annotations on screen and allows for the editing/creation of annotations.
    • +
  • Annotation View - where the image/video is displayed as well as all annotations
    • +
  • Type List - A list of all the types of tracks/detections on the page that can be used to filter the current view.
    • +
  • Track List - List of all the tracks as well as providing a way to perform editing functions on those tracks.
    • +
  • Timeline - timeline view of tracks and detections, as well as an interface to control the current frame along the video/image-sequence
    • +
  • Attributes - Attributes panel used to assign attributes to individual tracks or detections.
    • +
  • Context Sidebar - The right sidebar has several different view modes for different types of tasks.
      +
    • Threshold Controls - Advance thresholding of annotation confidence values per-type.
      • +
    • Image Enhancement - Adjust the image threshold range.
      • +
    • Group Manager - Controls for creating, managing, and filtering multi-annotation groups.
      • +
    • Attributes Details Panel - Attributes panel used to filter or generate graphs of attributes.
      • +
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+ + + + + + + + + + \ No newline at end of file diff --git a/Command-Line-Tools/index.html b/Command-Line-Tools/index.html new file mode 100644 index 000000000..192a8bb79 --- /dev/null +++ b/Command-Line-Tools/index.html @@ -0,0 +1,1623 @@ + + + + + + + + + + + + + + + + + + + + + + + + + + + + + Command Line Tools - DIVE + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + +
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DIVE Command Line Tools

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Note

+

This page is not related to the VIAME command line (i.e. kwiver, viame_train_detector)

+
+

Some of the DIVE data conversion features are exposed through dive.

+

Features

+ +

Installation

+

Follow the docs in the Debug Utils and Command Line Tools section of server/README.md.

+
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git clone https://github.com/Kitware/dive.git
+cd dive/server
+poetry install
+
+

Usage

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~$ poetry run dive convert --help
+
+# Usage: dive convert [OPTIONS] COMMAND [ARGS]...
+
+# Options:
+#   --version  Show the version and exit.
+#   --help     Show this message and exit.
+
+# Commands:
+#   coco2dive
+#   dive2viame
+#   kpf2dive
+#   viame2dive
+
+ + + + + + + + + + + + + + + +
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+ + + + + + + + + + \ No newline at end of file diff --git a/DataFormats/index.html b/DataFormats/index.html new file mode 100644 index 000000000..649ae5d15 --- /dev/null +++ b/DataFormats/index.html @@ -0,0 +1,1901 @@ + + + + + + + + + + + + + + + + + + + + + + + + + + + + + Data Formats - DIVE + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + +
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Data Formats

+

DIVE Desktop and Web support a number of annotation and configuration formats. The following formats can be uploaded or imported alongside your media and will be automatically parsed.

+
    +
  • DIVE Annotation JSON (default annotation format)
    • +
  • DIVE Configuration JSON
    • +
  • VIAME CSV
    • +
  • KPF (KWIVER Packet Format)
    • +
  • COCO and KWCOCO (web only)
    • +
+

DIVE Annotation JSON

+
+

Info

+

The current DIVE schema version is v2. Version 2 was introduced in DIVE version 1.9.0. It is backward-compatible with v1.

+
+

Files are typically named result_{dataset-name}.json. Their schema is described as follows.

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/** AnnotationSchema is the schema of the annotation DIVE JSON file */
+interface AnnotationSchema {
+  tracks: Record<string, TrackData>;
+  groups: Record<string, GroupData>;
+  version: 2;
+}
+
+interface TrackData {
+  id: AnnotationId;
+  meta: Record<string, unknown>;
+  attributes: Record<string, unknown>;
+  confidencePairs: Array<[string, number]>;
+  begin: number;
+  end: number;
+  features: Array<Feature>;
+}
+
+interface GroupData {
+  id: AnnotationId;
+  meta: Record<string, unknown>;
+  attributes: Record<string, unknown>;
+  confidencePairs: Array<[string, number]>;
+  begin: number;
+  end: number;
+  /**
+   * members describes the track members of a group,
+   * including sub-intervals that they are participating in the group.
+   */
+  members: Record<AnnotationId, {
+    ranges: [number, number][];
+  }>;
+}
+
+interface Feature {
+  frame: number;
+  flick?: Readonly<number>;
+  interpolate?: boolean;
+  keyframe?: boolean;
+  bounds?: [number, number, number, number]; // [x1, y1, x2, y2] as (left, top), (bottom, right)
+  geometry?: GeoJSON.FeatureCollection<GeoJSON.Point | GeoJSON.Polygon | GeoJSON.LineString | GeoJSON.Point>;
+  fishLength?: number;
+  attributes?: Record<string, unknown>;
+  head?: [number, number];
+  tail?: [number, number];
+}
+
+

The full source TrackData definition can be found here as a TypeScript interface.

+

Example JSON File

+

This is a relatively simple example, and many optional fields are not included.

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{
+  "version": 2,
+
+  "tracks": {
+    // Track 1 is a true multi-frame track
+    "1": {
+      "id": 1,
+      "meta": {},
+      "attributes": {},
+      "confidencePairs": [["fish", 0.87], ["rock", 0.22]],
+      "features": [
+        { "frame": 0, "bounds": [0, 0, 10, 10], "interpolate": true },
+        { "frame": 3, "bounds": [10, 10, 20, 20] },
+      ],
+      "begin": 0,
+      "end": 2,
+    },
+    // Track 2 is a simple single-frame bounding box detection
+    "2": {
+      "id": 2,
+      "meta": {},
+      "attributes": {},
+      "confidencePairs": [["scallop", 0.67]],
+      "features": [
+        { "frame": 3, "bounds": [10, 10, 20, 20] },
+      ],
+      "begin": 3,
+      "end": 3,
+    },
+  },
+
+  "groups": {
+    "1": {
+      "id": 1,
+      "meta": {},
+      "attributes": {},
+      "confidencePairs": [["underwater-stuff", 1.0]],
+      "members": {
+        // The fish is a group member on frame 0, 1, and 3.
+        // The scallop is only a group member at frame 3.
+        "1": { "ranges": [[0, 1], [3, 3]] },
+        "2": { "ranges": [[3, 3]] },
+      },
+      "begin": 0,
+      "end": 2,
+    }
+  }
+}
+
+

DIVE Configuration JSON

+

This information provides the specification for an individual dataset. It consists of the following.

+
    +
  • Allowed types (or labels) and their appearances are defined by customTypeStyling and customGroupStyling.
    • +
  • Preset confidence filters for those types are defined in confidenceFilters
    • +
  • Track and Detection attribute specifications are defined in attributes
    • +
+

The full DatasetMetaMutable definition can be found here.

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interface DatasetMetaMutable {
+  version: number;
+  customTypeStyling?: Record<string, CustomStyle>;
+  customGroupStyling?: Record<string, CustomStyle>;
+  confidenceFilters?: Record<string, number>;
+  attributes?: Readonly<Record<string, Attribute>>;
+}
+
+

VIAME CSV

+

Read the VIAME CSV Specification.

+
+

Warning

+

VIAME CSV is the format that DIVE exports to. It doesn't support all features of the annotator (like groups) so you may need to use the DIVE Json format. It's easier to work with.

+
+

KWIVER Packet Format (KPF)

+

DIVE supports MEVA KPF

+ +
+

Info

+

KPF is typically broken into 3 files, but DIVE only supports annotations being loaded as a single file. However, the 3-file breakdown is just convention and KPF can be loaded from a single combined file.

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# Example: create a sinlge KPF yaml annotation file for use in DIVE
+cat 2018-03-07.11-05-07.11-10-07.school.G339.*.yml > combined.yml
+
+
+

COCO and KWCOCO

+

Only supported on web.

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+ + + + + + + + + + \ No newline at end of file diff --git a/Deployment-Docker-Compose/index.html b/Deployment-Docker-Compose/index.html new file mode 100644 index 000000000..c83e344fd --- /dev/null +++ b/Deployment-Docker-Compose/index.html @@ -0,0 +1,2062 @@ + + + + + + + + + + + + + + + + + + + + + + + + + + + + + Running with Docker Compose - DIVE + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + +
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Running with Docker Compose

+

Start here once you have SSH access and sudo privileges for a server or VM.

+
+

Note

+

Docker server installation is only supported on Linux distributions

+
+

Container Images

+

A DIVE Web deployment consists of 2 main services.

+ +

In addition, a database (MongoDB) and a queue service (RabbitMQ) are required.

+

DIVE-Web-Architecture-Diagram.svg

+

Install dependencies

+

SSH into the target server and install these system dependencies.

+
+

Tip

+

You can skip this section if you used Ansible to configure your server, as it already installed all necessary dependencies.

+
+ +

Basic deployment

+

Clone this repository and configure options in .env .

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# Clone this repository
+git clone https://github.com/Kitware/dive /opt/dive
+
+# Change to correct directory
+cd /opt/dive
+
+# Initiate the .env file
+cp .env.default .env
+
+# Edit the .env file
+# See configuration options below and inline comments
+nano .env
+
+# Pull pre-built images
+docker-compose pull
+
+# Bring the services up
+# Make sure to specify docker-compose.yml unless you intend to mount code for development
+docker-compose -f docker-compose.yml up -d
+
+

VIAME server will be running at http://localhost:8010. You should see a page that looks like this. The default username and password is admin:letmein.

+

Login Page

+

Production deployment

+

If you have a server with a public-facing IP address and a domain name that points to it, you should be able to use our production deployment configuration. This is the way we deploy viame.kitware.com.

+
    +
  • containrrr/watchtower updates the running containers on a schedule using automated image builds from docker hub (above).
    • +
  • linuxserver/duplicati is included to schedule nightly backups, but must be manually configured.
    • +
+

You should scale the girder web server up to an appropriate number. This stack will automatically load-balance across however many instances you bring up.

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# Continuing from above, modify .env again to include the production variables
+nano .env
+
+# pull extra containers
+docker-compose -f docker-compose.yml -f docker-compose.prod.yml pull
+
+# scale the web service up
+docker-compose -f docker-compose.yml -f docker-compose.prod.yml up -d --scale girder=4
+
+

Splitting services

+

It's possible to split your web server and task runner between multiple nodes. This may be useful if you want to run DIVE Web without a GPU or if you want to save money by keeping your GPU instance stopped when not in use. You could also increase parallel task capacity by running task runners on multiple nodes.

+
    +
  • Make two cloud VM instances, one with NVIDIA drivers and container toolkit, and one without. This is still a special case of scenario 1 from the Provisioning Guide
    • +
  • Clone the dive repository on both, and set up .env on both with the same configuration.
    • +
  • Be sure that WORKER_API_URL and CELERY_BROKER_URL in particular are uncommented and set to the IP or domain name of your web server. This is how the worker will talk to the web server, so the web server must be network accessible from the worker.
    • +
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## On the web server
+docker-compose -f docker-compose.yml up -d girder rabbit
+
+## On the GPU server(s)
+docker-compose -f docker-compose.yml up -d --no-deps girder_worker_pipelines girder_worker_training girder_worker_default
+
+

In order to run any jobs (video transcoding, pipelines, training, addon upgrades) the GPU server will need to be running.

+

Addon management

+

After initial deployment, DIVE Server will require an addon upgrade in order to download and scan for VIAME addons. Run this by issuing a POST /dive_configuration/upgrade_pipelines request from the swagger UI at http://{server_url}:{server_port}/api/v1.

+
    +
  • Whether you force or not, only those pipelines from addons from the exact urls passed will be enabled on the server.
    • +
  • An old addon can be disabled by simply omitting its download from the upgrade payload.
    • +
  • force should be used to force re-download of all URLs in the payload even if their zipfiles have been cached.
    • +
  • An upgrade run is always required if the "common" pipelines in the base image change. These are updated for every run, and do not require force.
    • +
  • See the job log to verify the exact actions taken by an upgrade job.
    • +
  • Optional patches are updated occasionally and you can find the latest urls here.
    • +
+

Upgrade Pipelines Swagger

+

Configuration Reference

+

Server branding config

+

You can configure the brand and messaging that appears in various places in the DIVE Web UI using the config API.

+
    +
  1. Open the swagger page at /api/v1
    2. +
  2. PUT /dive_configuration/brand_data where the body is a JSON object from the template below. If you do not want to set a value and use the default, omit the key and value from the config body.
    3. +
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{
+  // A JSON Vuetify theme configuration object.
+  // https://vuetify.cn/en/customization/theme/#customizing
+  "vuetify": {},
+
+  // A URL to a favicon
+  "favicon": "",
+
+  // A URL to an image that will be shown as the main logo
+  "logo": "",
+
+  // Used in several places, including the main toolbar
+  "name": "VIAME",
+
+  // Message that appears on the login screen
+  "loginMessage": "",
+
+  // Alert messages are typically used to tell users about maintenance, outages, etc.
+  "alertMessage": "",
+}
+
+

Web Server config

+

This image contains both the backend and client.

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VariableDefaultDescription
GIRDER_MONGO_URImongodb://mongo:27017/girdera mongodb connection string
GIRDER_ADMIN_USERadminadmin username
GIRDER_ADMIN_PASSletmeinadmin password
CELERY_BROKER_URLamqp://guest:guest@default/rabbitmq connection string
WORKER_API_URLhttp://girder:8080/api/v1Address for workers to reach web server
+

There is additional configuration for the RabbitMQ Management plugin. It only matters if you intend to allow individual users to configure private job runners in standalone mode, and can otherwise be ignored.

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VariableDefaultDescription
RABBITMQ_MANAGEMENT_USERNAMEguestManagement API username
RABBITMQ_MANAGEMENT_PASSWORDguestManagement API password
RABBITMQ_MANAGEMENT_VHOSTdefaultVirtual host should match CELERY_BROKER_URL
RABBITMQ_MANAGEMENT_URLhttp://rabbit:15672/Management API Url
+

You can also pass girder configuration and celery configuration.

+

Worker config

+

This image contains a celery worker to run VIAME pipelines and transcoding jobs.

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Note: Either a broker url or DIVE credentials must be supplied.

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VariableDefaultDescription
WORKER_WATCHING_QUEUESnullone of celery, pipelines, training. Ignored in standalone mode.
WORKER_CONCURRENCY# of CPU coresmax concurrnet jobs. Lower this if you run training
WORKER_GPU_UUIDnullleave empty to use all GPUs. Specify UUID to use specific device
CELERY_BROKER_URLamqp://guest:guest@default/rabbitmq connection string. Ignored in standalone mode.
KWIVER_DEFAULT_LOG_LEVELwarnkwiver log level
DIVE_USERNAMEnullUsername to start private queue processor. Providing this enables standalone mode.
DIVE_PASSWORDnullPassword for private queue processor. Providing this enables standalone mode.
DIVE_API_URLhttps://viame.kitware.com/api/v1Remote URL to authenticate against
+

You can also pass regular celery configuration variables.

+

Running the GPU Job Runner in standalone mode

+

Linux Only.

+

Individual users can run a standalone worker to process private jobs from VIAME Web.

+
    +
  • Install VIAME from the github page to /opt/noaa/viame.
    • +
  • Activate the install with source setup_viame.sh.
    • +
  • Install VIAME pipeline addons by running cd bin && download_viame_addons.sh from the VIAME install directory.
    • +
  • Enable the private user queue for your jobs by visiting the jobs page
    • +
  • Run a worker using the docker command below
    • +
+
+

Note: The --volume mount maps to the host installation. You may need to change the source from /opt/noaa/viame depending on your install location, but you should not change the destination from /tmp/addons/extracted.

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docker run --rm --name dive_worker \
+  --gpus all \
+  --ipc host \
+  --volume "/opt/noaa/viame/:/tmp/addons/extracted:ro" \
+  -e "WORKER_CONCURRENCY=2" \
+  -e "DIVE_USERNAME=CHANGEME" \
+  -e "DIVE_PASSWORD=CHANGEME" \
+  -e "DIVE_API_URL=https://viame.kitware.com/api/v1" \
+  kitware/viame-worker:latest
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Deployment Overview

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The goal of this page is to provide an overview of the ways to run VIAME or VIAME Web in various types of compute environments.

+

Contents

+ +

Our server vs running your own

+ + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + +
Using our serverRunning your own
Free to use; no maintenance costsYou pay hosting and maintenance costs
Always up to datePossible to configure automated updates
One shared environment for everyoneYour organization has full control over access
Our team monitors this service for errors and can respond to issues proactivelySupport requires logs, screenshots, and other error information if applicable
Our team can provide guidance on annotation and training because we have direct access to your dataSupport usually requires example data and annotations
Having user data in our environment helps us understand user needs and improve the productFeedback is always appreciated.
Limited shared compute resources (2 GPUs) available to process jobs. Can be mitigated by hybrid compute optionsAs much compute as you pay for
+

NOAA Google Cloud Computing resources

+

For deploying an instance in NOAA Fisheries GCP environment please use the following repository for reference:

+

VIAME-Web NOAA GCP

+

Using our public server

+

The easiest option to get started using VIAME is to try our public server.

+

Running your own instance

+

You may wish to run your own deployment of VIAME Web in your lab or a cloud environment. Deploying VIAME Web is relatively straightforward with docker-compose.

+ + + + + + + + + + + + + + + + + + + + + +
EnvironmentInstructions
Local serverIf you already have SSH access to an existing server and sudo permissions, proceed to the docker compose guide.
Google CloudContinue to the Provisioning Google Cloud page for Scenario 1
AWS / AzureCreate a server on your own through the cloud management console, then proceed to the docker compose guide.
+

VIAME CLI with project folders

+

You may not want to use the web annotator and job orchestration at all, and instead run VIAME using the command line in a cloud environment with GPU.

+ + + + + + + + + + + + + + + + + + + + + +
EnvironmentInstructions
Local serverThis is a standard VIAME install. See the VIAME documentation install instructions.
Google CloudContinue to the Provisioning Google Cloud page for Scenario 2
AWS / AzureCreate a server through the cloud management console, then proceed to the VIAME documentation install instructions.
+

Hybrid options for compute

+

Instead of running the whole web stack, it's possible to deploy a worker by itself to process compute-intensive jobs. This is referred to in the docs as standalone mode. For example, you could:

+
    +
  • Upload and annotate at viame.kitware.com, but run your own private worker on a lab workstation
    • +
  • Deploy your own web server to a local lab workstation, but process your jobs in an ephemeral Google Cloud VM.
    • +
+

How it works

+
    +
  • You must toggle your private queue
    • +
  • When you launch jobs (like transcoding, pipelines, or training), they go into a special queue just for your user account.
    • +
  • You are responsible for running a worker. Your worker is a Celery process that will connect to our public RabbitMQ server.
    • +
  • Jobs submitted through the interface at viame.kitware.com will run on your compute resources. This involves automatically downloading the video or images and annotation files, running a kwiver pipeline, and uploading the results.
    • +
+

To set up a private worker, continue to the Provisioning Google Cloud page for Scenario 3.

+

Hybrid options for storage

+

Any instance of VIAME Web, including our public server, can connect to S3-compatible storage. This means your lab or group could make your existing data available at viame.kitware.com, either privately or publicly.

+ + + + + + + + + + + + + + + + + + + + + + + + + +
Storage ProductSupport level
Google Cloud BucketsUse as backing storage, import existing data, monitor for changes and automatically discover new uploads
AWS S3Use as backing storage, import existing data
MinIOUse as backing storage, import existing data
Azure Blob StorageLimited import support using MinIO Azure Gateway
+

Get Help

+

Contact us for support with any of these topics.

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Cloud Deployment Guide

+
+

Note

+

Be sure to read the Deployment Overview first.

+
+
    +
  • Scenario 1: Deploy your own instance of VIAME Web to GCP Compute Engine.
    • +
  • Scenario 2: Run VIAME pipelines on a GCP Compute Engine VM from the command line.
    • +
  • Scenario 3: Run a Private GPU worker in GCP to process jobs from any VIAME Web instance including viame.kitware.com (standalone mode)
    • +
+

The terraform section is the same for all scenarios. The Ansible section will have differences.

+

Before you begin

+

You'll need a GCP Virtual Machine (VM) with the features listed below. This section will guide you through creating one and deploying VIAME using Terraform and Ansible.

+
    +
  • Terraform automates the process of creating and destroying cloud resources such as VMs.
    • +
  • Ansible automates configuration, such as software installation, on newly created machines.
    • +
+

Together, these tools allow you to quickly create a reproducible environment. If you do not want to use these tools, you can create your own VM manually through the management console and skip to the docker documentation instead.

+ + + + + + + + + + + + + + + + + + + + + + + + + +
FeatureRecommended value
Operating systemUbuntu 20.04
Instance Typen1-standard-4 or larger
GPU Typenvidia-tesla-t4, nvidia-tesla-p4, or similar
Disk TypeSSD, 128GB or more depending on your needs
+

Install dependencies

+

To run the provisioning tools below, you need the following installed on your own workstation.

+
+

Note

+

Google Cloud worker provisioning can only be done from an Ubuntu Linux 18.04+ host. Ansible and terraform should work on Windows Subsystem for Linux (WSL) if you only have a windows host. You could also use a cheap CPU-only cloud instance to run these tools.

+
+ +
+

Tip

+

Google Cloud imposes GPU Quotas. You may need to request a quota increase. Anecdotally, request increases of 1 unit are approved automatically, but more are rejected.

+
+

Creating a VM with Terraform

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# Clone the dive repo
+git clone https://github.com/Kitware/dive.git
+cd dive/devops
+
+# Generate a new ssh key
+ssh-keygen -t ed25519 -f ~/.ssh/gcloud_key
+
+

Run Terraform

+
+

Warning

+

GPU-accelerated VMs are significantly more expensive than typical VMs. Make sure you are familiar with the cost of the machine and GPU you choose. See main.tf for default values.

+
+

See devops/main.tf for a complete list of variables. The default machine_type, gpu_type, and gpu_count can be overridden.

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# Authenticate with google cloud
+gcloud auth application-default login
+
+# Verify your GPU Quota
+# https://cloud.google.com/compute/docs/gpus/create-vm-with-gpus
+# REGION might change.
+gcloud compute regions describe us-central1
+
+# Run plan, providing any variables you choose
+terraform plan \
+    -var "project_name=<GCloud-Project-Id>" \
+    -var "gpu_count=1" \
+    -out create.plan
+
+# Run apply.  It may take several minutes
+terraform apply create.plan
+
+

Destroy the stack

+

Later, when you are done with the server and have backed up your data, use terraform to destroy your resources.

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terraform destroy -var "project_name=<GCloud-Project-Id>"
+
+

Configure with Ansible

+

This step will prepare the new host to run a VIAME worker by installing nvidia drivers, docker, and downloading VIAME and all optional addons.

+
+

Warning

+

The playbook may take 30 minutes or more to run because it must install nvidia drivers and download several GB of software packages.

+
+

Ansible Extra Vars

+

These are all the variables that can be provided with --extra-vars.

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VariableDefaultDescription
run_servernoSet run_server=yes for scenario 1 (Web Instance) (Fastest option)
run_viame_clinoSet run_viame_cli=yes for scenario 2 (VIAME CLI)
run_worker_containernoSet run_worker_container=yes for scenario 3 (Standalone Worker)
viame_bundle_urllatest bundle urlOptional for scenario 2 & 3. Change to install a different version of VIAME. This should be a link to the latest Ubuntu Desktop (18/20) binaries from viame.kitware.com (Mirror 1)
DIVE_USERNAMEnullRequired for scenario 3. Username to start private queue processor
DIVE_PASSWORDnullRequired for scenario 3. Password for private queue processor
WORKER_CONCURRENCY2Optional for scenario 3. Max concurrnet jobs. Change this to 1 if you run training
DIVE_API_URLhttps://viame.kitware.com/api/v1Optional for scenario 3. Remote URL to authenticate against.
KWIVER_DEFAULT_LOG_LEVELwarnOptional for scenario 3. kwiver log level
+

Run Ansible

+

The examples below assumes the inventory file was created by Terraform above.

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# install galaxy plugins
+ansible-galaxy install -r ansible/requirements.yml
+
+# Choose only 1 of the scenarios below
+
+# Scenario 1 (Web Instance) Example
+ansible-playbook -i inventory ansible/playbook.yml --extra-vars "run_server=yes"
+
+# Scenario 2 (VIAME CLI) Example
+ansible-playbook -i inventory ansible/playbook.yml --extra-vars "run_viame_cli=yes"
+
+# Scenario 3 (Standalone Worker) Example
+ansible-playbook -i inventory ansible/playbook.yml --extra-vars "run_worker_container=yes DIVE_USERNAME=username DIVE_PASSWORD=changeme"
+
+

Once provisioning is complete, jobs should begin processing from the job queue. You can check viame.kitware.com/#/jobs to see queue progress and logs.

+
+

Tip

+

This Ansible playbook is runnable from any Ubuntu 18.04+ host to any Ubuntu 18.04+ target. To run it locally, use the inventory.local file instead. If you already have nvidia or docker installed, you can comment out these lines in the playbook.

+

If you run locally you'll need to restart the machine and run the playbook a second time. The playbook will do this automatically for remote provisioning, but cannot restart if you're provisioning localhost.

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ansible-playbook --ask-become-pass -i inventory ansible/playbook.yml --extra-vars "<see above>"
+
+
+
+

Tip

+

You may need to run through the docker post-install guide if you have permissions errors when trying to run docker.

+
+

Check that it worked

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# Log in with the ip address from the inventory file (or google cloud dashboard)
+ssh -i ~/.ssh/gcloud_key viame@ip-address
+
+# Test nvidia docker installation
+docker run --gpus=all --rm nvidia/cuda:11.0-base nvidia-smi
+
+# Test regular nvidia runtime
+nvidia-smi
+
+# For Scenario 2 and 3, check KWIVER installation
+cd /opt/noaa/viame
+source setup_viame.sh
+kwiver
+
+# For Scenario 3, you can check to see if the worker is started
+# You should see "celery@identifier ready." in the logs
+sudo docker logs -f worker
+
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You can enable your private queue on the jobs page and begin running jobs.

+

Next Steps

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Troubleshooting

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Cloud Storage Integration

+

This page is intended for storage administrators who would like to make their existing data available through VIAME Web.

+
+

Tip

+

This guide assumes you are working with viame.kitware.com. If you are using a different deployment, be sure to change the appropriate fields.

+
+
+

Tip

+

Regarding data transfer costs, if you choose to keep both your data storage and job runners in Google Cloud (or AWS), you will avoid paying a data egress fee for transferring data between storage and the processing node.

+
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Google Cloud Storage Mirroring

+

DIVE Web can mirror your data from Google Cloud storage buckets such that your team fully controls upload and data organization, but is able to view, annotate, and run analysis within VIAME Web.

+

Creating access credentials

+
    +
  1. Create a new service account with read-only access to the bucket(s) and prefixes that you want to map.
    2. +
  2. In storage settings, in the interoperability tab
      +
    1. create an access key (Service account HMAC) for your read-only service account.
      2. +
    2. set the current project as the default project for interoperability access
      3. +
    3. take note of your Access Key, Secret Key, Storage URI, and Bucket Name.
      4. +
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+

Setting up CORS

+

You'll also need to configure CORS headers for any buckets where media will be served.

+
    +
  • Save the snippet below as bucket-cors-config.json.
    • +
  • "origin" should be whatever you type into your browser to get to the web application.
    • +
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  [
+    {
+      "origin": ["https://viame.kitware.com"],
+      "method": ["GET", "PUT", "POST", "DELETE"],
+      "responseHeader": ["Content-Type"],
+      "maxAgeSeconds": 3600
+    }
+  ]
+
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Then use gsutils to configure each bucket.

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gsutil cors set bucket-cors-config.json gs://BUCKET_NAME
+
+

Choose a mount point

+

Choose a folder as a mount-point inside DIVE Web. This folder should ideally be dedicated to mapping from your GCS buckets.

+

We recommend creating a Google Cloud Storage folder with sub-folders named for each bucket you mount. You can do this using the New Folder button in DIVE Web's File Browser. You can get the folder ID from your browser's URL bar.

+

Send us the details

+

If you want to use your bucket with viame.kitware.com, send us an email with the following details to viame-web@kitware.com.

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subject: Add a google cloud storage bucket mount
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+Bucket name:
+Service provider: Google cloud
+Access Key: 
+Secret Key:
+Mount point folder:
+Prefix (if applicable):
+
+

S3 and MinIO Mirroring

+

If you have data in S3 or MinIO, you can mirror it in DIVE for annotation.

+
    +
  • Data is expected to be either videos or images organized into folders
    • +
  • You should not make changes to folder contents once a folder has been mirrored into DIVE. Adding or removing images in a particular folder may cause annotation alignment issues.
    • +
  • Adding entire new folders is supported, and will require a re-index of your S3 bucket.
    • +
+

Pub/Sub notifications

+

Creating pub/sub notifications is optional, but will keep your mount point up-to-date automatically with new data added to the bucket. In order to make use of this feature, your DIVE server must have a public static IP address or domain name.

+
    +
  1. Create a bucket notification configuration
    2. +
  2. Create a topic subscription
    3. +
  3. Set a push delivery method for the subscription
      +
    1. The URL for delivery should be https://viame.kitware.com/api/v1/bucket_notifications/gcs
      2. +
    +
    4. +
+

Our server will process events from this subscription to keep your data current.

+

Mirroring setup

+

If you have your own dive deployment, you can create a bucket mirror yourself through the Girder admin console.

+
    +
  1. Open /girder#assetstores in your browser.
      +
    1. Choose Create new Amazon S3 Assetstore
      2. +
    2. Enter a name and all the details you collected above.
      3. +
    3. For region, enter the AWS or GCS region you're using, like us-east-1.
      4. +
    4. For service, enter the service URI if you're using an S3 provider other than AWS (such as MinIO or GCS).
      5. +
    5. Mark as Read only.
      6. +
    +
    2. +
  2. Now import your data. Choose the green Begin Import button on the new assetstore.
      +
    1. Leave Import path blank unless you only want to import part of a bucket.
      2. +
    2. For Destination type, use the folder ID you chose as the mount point above.
      3. +
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The import may take several minutes. You should begin to see datasets appear inside the mount point folder you chose.

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DIVE Desktop

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DIVE is available as an electron based desktop application with VIAME integration. It has most of the same UI and features web. You may want to use desktop if...

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  • You want to make use of GPUs on your own workstation
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  • You need to use DIVE without network access
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  • You have large quantities of data on disk impractical for uploading to a server.
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DIVE Desktop is fully supported on Windows and Linux. MacOS users can use it as an annotator, but without NVIDIA Driver support, the machine learning features from VIAME are unavailable.

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images/Banner.png

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Installation

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Download the latest DIVE Desktop from GitHub

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Choose an asset from the list matching your operating system:

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OSExtensionDescription
Windows.exePortable executable (recommended)
Windows.msiInstaller file
MacOS.dmgMacOS DiskImage (Intel only, M1 not supported)
Linux.AppImagePortable executable for all Linux platforms (recommended)
Linux.snapUbuntu SnapCraft package
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Full VIAME Desktop Installation

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This is the installation guide for DIVE. If you want the full VIAME toolkit, you can get it from github.com/viame/viame. The full toolkit installation includes DIVE.

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Supported Dataset Types

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DIVE Desktop supports single- and multi-camera datasets.

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  • Single Camera Dataset is the most common option. Single camera datasets are supported by the majority of VIAME pipeline and training configurations.
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  • Stereo Datasets are for datasets collected from a camera rig with a left and right camera. These datasets can be used with certain specialty VIAME pipelines. Their physical relationship may be described by a camera transform .npz file (numpy transformation matrix).
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  • Multi-Cam Datasets are for more generic multi-camera rig setups. They may have overlapping fields of view.
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Importing Datasets

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Click either Open Image Sequence or Open Video to begin a single camera default import. Click the dropdown button to show additional import options.

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  • From File is the default option for videos. It will open a file picker and allow you to choose a single video file.
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  • Directory is the default option for image sequences. It will prompt you to choose an entire folder of images to import as a dataset.
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    • You can use globbing patterns to filter the contents of an image directory during import. Click Show advanced options to reveal the glob input.
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  • Image List will prompt you to choose a .txt file that contains an image name or full path on each line.
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  • Stereo will prompt you to choose 2 videos or 2 image sequences and a calibration file.
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  • Multi-Cam will prompt you to describe the multi-cam configuration by naming several cameras and picking the source media for each.
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The import routine will look for .csv and .json files in the same directory as the source media, and you will be prompted to manually select an annotation file and a configuration file. Neither is required.

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Video Transcoding

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DIVE Desktop is an Electron application built on web technologies. Certain video codecs require automatic transcoding to be usable. Video will be transcoded unless all the following conditions are met.

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  • codec = h264
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  • sample_aspect_ratio (SAR) = 1:1
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Transcoding is done with ffmpeg, which comes bundled with the DIVE Desktop executable.

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Running Training

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  1. Click on Training to open the training tab.
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  2. Add one or more datasets to the staging area by clicking .
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  3. Choose an appropriate training config file and any training parameters. These are documented on the training configuration page.
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  4. Click Train on (N) Datasets. Note that depending on what configuration and datasets you chose, training could take hours or days.
    5. +
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Desktop Settings

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DIVE Desktop requires a local installation of the VIAME toolkit to run ML pipelines and training.

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  • VIAME Install Path is set automatically if you use the launch_dive_interface.[bat|sh] script from a VIAME install. Otherwise, you may need to change this yourself.
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    • Use Choose to choose the base installation path, then click Save.
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  • Project Data Storage Path defaults to a subfolder in your user workspace and should generally not be changed.
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  • Read only mode disables the ability to save when using the annotator.
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  • Synchronize Library - The Synchronize Library with Project Data button is useful if data in the Project Data Storage Path gets out of sync with what appears in the Library list.
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Data Storage Path

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The data storage path is not at all related to "project folders" in VIAME. It's just a place for DIVE Desktop to keep and structure all the data it needs to run.

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A typical data storage directory has 3 subfolders:

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  • DIVE_Jobs - Each job run has a working directory, kept here.
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  • DIVE_Projects - Each dataset you import into desktop has metadata and annotation data (with revision history) kept here.
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  • DIVE_Pipelines - Training runs produce models that get copied into here.
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Here's an example of structure you might find in the storage path.

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VIAME_DATA
+├── DIVE_Jobs
+│  ├── Scallop_1_scallop and flatfish_06-01-2021_11-02-11.585
+│  │  ├── detector_output.csv
+│  │  ├── dive_job_manifest.json
+│  │  ├── image-manifest.txt
+│  │  └── runlog.txt
+│  └── Scallop_2_scallop netharn_06-01-2021_11-02-19.432
+│     ├── detector_output.csv
+│     ├── dive_job_manifest.json
+│     ├── image-manifest.txt
+│     └── runlog.txt
+├── DIVE_Pipelines
+│  ├── My Fish SVM Demo
+│  │  ├── detector.pipe
+│  │  └── fish.svm
+│  └── Quadcam_Fish_Detector_SVM
+│     ├── detector.pipe
+│     └── fish.svm
+└── DIVE_Projects
+   ├── fish_training_data_c_jp7hq88vfv
+   │  ├── auxiliary
+   │  │  └── result_06-01-2021_10-55-38.627.json
+   │  ├── meta.json
+   │  └── result_06-01-2021_04-53-38.050.json
+   └── scallop_2_jrgdq760gu
+      ├── auxiliary
+      │  └── result_06-01-2021_10-54-56.034.json
+      ├── meta.json
+      └── result_06-01-2021_11-02-35.857.json
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Configuration with env

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DIVE Desktop looks for the these environment variables on launch.

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NameDefaultDescription
DIVE_VIAME_INSTALL_PATH/opt/noaa/viame (Linux/macOS) C:\Program Files\VIAME (Windows)Overrides the location of the VIAME installation. Users may not change this value in the settings pane if provided.
DIVE_READONLY_MODENoneOverrides read only mode to true or false. Users may still change this value in the settings pane if provided.
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Import/Export of Models

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Trained models are kept in ${Project Data Storage Path}/DIVE_Pipelines as described above. Each model file consists of exactly 1 pipe file and some number of other model files.

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  • The pipe file can be one of detector.pipe, tracker.pipe, or generate.pipe.
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  • Other files can be .zip, .svm, .lbl, or .cfg.
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You can use externally trained models in DIVE by creating a folder containing these files. The name of the configuration or pipeline in dive will be the folder name you create.

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Troubleshooting

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I imported some data, but I don't see my annotations

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See Importing images and video above. You most likely need to specify your annotation file in the import dialog.

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Some VIAME canned pipelines are missing, or there are no training configuration files.

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You may need to install VIAME Toolkit, or correct your VIAME Install Base Path setting.

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If you don't see some pipelines you expect, you may not have installed the addons (also called Optional Patches) yet. Download and install these based on the VIAME installation docs.

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Advanced troubleshooting

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If you experience problems or have questions about DIVE Desktop, contact us and include the content from the settings page such as Build Version as well as your currently installed VIAME version.

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It's also helpful to look in the debug console. Press Ctrl+Shift+I to launch the Dev Tools and look under the console tab. Errors and warnings will appear in red and yellow. You can right-click in the console area and click "Save As" to save the log file and open a support ticket

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Debugging Desktop

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+ + + + + + + + + + \ No newline at end of file diff --git a/FAQ/index.html b/FAQ/index.html new file mode 100644 index 000000000..325e18ac8 --- /dev/null +++ b/FAQ/index.html @@ -0,0 +1,1723 @@ + + + + + + + + + + + + + + + + + + + + + + + + + + + + + Frequently Asked Questions - DIVE + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + +
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Frequently Asked Questions

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How do I find existing data to use?

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The Training Data Collection is organized roughly by domain and collection method.

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How do I share data with others?

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This use case is covered on the sharing page.

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If you want to publish your data so that other groups can use it, please contact us.

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How do I run analysis workflows on my data?

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In DIVE, these are called pipelines. You'll need to see what sorts of analysis workflows are currently available on the pipeline page.

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These sorts of AI workflows are the final goal for most users. They allow the user to quickly perform quantitative analysis to answer questions like how many individuals of each type appear on each image or video frame?

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If no suitable existing analysis exists for your use case or you aren't sure how to proceed, you're welcome to contact our team and ask for help.

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How do I create new models?

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You want to perform analysis (detection, tracking, measurement, etc) on object types not yet covered by the community data and pre-trained analysis pipelines available. This will involve training new models based on ground-truth annotations.

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Training configurations are listed on the pipeline page.

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How can I load data incrementally?

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If you have data in lots of places or it arrives at different times, it's probably best to break these batches or groups into individual datasets and annotate each individually. Using the checkboxes in web, you can use multiple datasets to generate a trained model.

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Breaking large amounts of data up into manageable groups is generally a good idea.

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Is it possible to get email notifications when a job is done?

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DIVE Web doesn't currently support notifications through email for job status changes. You can check your job status through the web interface.

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Do users need to transcode their own data?

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No. VIAME Web and DIVE Desktop perform automatic transcoding if it is necessary.

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How does video frame alignment work?

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When you annotate a video in DIVE, the true video is played in the browser using a native HTML5 video player.

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Web browsers report and control time in floating point seconds rather than using frame numbers, but annotations are created using frame numbers as their time indicators, so it's important to make sure these line up.

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Most of the time, videos are downsampled for annotation, meaning that the true video framerate (30hz, for example) is annotated at a lower rate, such as 5hz or 10hz. Kwiver (the computer vision tool behind VIAME) uses a downsampling approach that sorts actual frames into downsampled buckets based on the start time of the frame.

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An implementation of this approach is described here.

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def get_frame_from_timestamp(timestamp, true_fps, downsample_fps):
+  downsampled_frame = timestamp * downsample_fps
+  real_frame = 
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+  if downsample_fps >= true_fps:
+    # This is a true downsample
+    next_true_frame_boundary = Math.ceil(timestamp * true_fps)
+    return Math.floor(next_true_frame_boundary / downsample_fps)
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+  raise Exception('Real video framerate must be GTE downsample rate')
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There are caveats with this approach.

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  • It does not handle padding properly. If a video begins or ends with padding, you may see a black screen in DIVE, but kwiver will wait for the first true frame to use as the representative for the bucket.
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  • It does not handle variable width frames properly. If a video has variable width frames, the assumptions about the locations of true frame boundaries do not hold and kwiver training may have alignment issues.
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Mouse and Keyboard Shortcuts

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General Interactions

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controldescription
Left Clickselect track/detection
Right Clicktoggle edit mode
Middle Clickpan camera
Scroll Wheelzoom
Mouse Dragpan
Shift + mouse dragselect area to zoom
Upselect previous track in list
Downselect next track in list
Escunselect, exit edit mode
Atoggle attribute / merge pane
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Playback

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controldescription
Left or Dprevious frame
Right or Fnext frame
Spaceplay/pause
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Editing

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Most editing controls are available when a track or detection is selected.

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controldescription
Deldelete entire track or detection
Ncreate new track or detection
Homego to first frame of selected track
Endgo to the last frame of selected track
1Enter bounding-box edit mode on selection
2Enter polygon edit mode on selection
3Enter head/tail/line edit mode on selection
H or Gwhile in line mode, place head point next
T or Ywhile in line mode, place tail point next
Escunselect, exit edit mode, exit merge mode
Ktoggle keyframe for the current frame and selected track
Itoggle interpolation for the current range of the selected track
Menter merge mode for on selection
Shift+Mcommit (finalize) merge for selected tracks.
Gcreate new group including the selected track
Shift+Enterfocus class select/text box on selected track in track list. Press Down to open all options. Pres Enter twice to accept an option. Press Esc to unfocus.
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Adding new shortcuts

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If you think a new shortcut or hotkey would be useful, please send us feedback.

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Multicamera and Stereo Data (Dive Desktop Beta)

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A beta release of the Desktop Only software supports both multicamera and stereo datasets for viewing and editing.

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Loading MultiCamera data

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Dive Desktop has documenation under "Supported Dataset Types" which describes how to import multiCamera or stereoscopic data. Reminder that stereoscopic data requies a calibration file where multicamera data doesn't.

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Data/Track Organization

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Data is loaded amongst multiple folders to creae a mutlicamera dataset. In these cases trackIds will be linked if they are the same across the cameras. Selection of a trackId that exists across multiple cameras will be linked together in the Track List.

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Example If Camera 1 and Camera 2 both have annotation files with TrackId 1 they will be automatically be linked together and selecting one will select them in both cameras.>

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Camera Selection

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Editing and interacting with a camera requires that you select the camera first. There is a dropdown in the upper right of the screen which contains the name of the currently selected camera. Also the currently selected camera will contain a dashed light blue outline. Left or Right clicking within a camera will cause that camera to be selected.

+

Creating Tracks/Detections

+

Track creation for a single camera works much in the same way it does for single camera datasets. Using the New Track button or N key to create a new track and draw. To quickly create a track on another camera and have it link to the current cameras can be done using the "MultiCamera Tools" or by selecting the the desired base track and right clicking on the new camera to add the track. This will put the annotation tool into creation mode for the current TrackId on a new camera. Alternatively the MultiCamera Tools panel can simplify this be clicking on the Edit button.

+

MultiCamera Tools

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Next to the dropdown for the camera selection is a camera settings icon. Clicking on that will open the context menu. Within this menu is a dropdown for selecting MultiCamTools. These tools provide a quick view of the selected track across all cameras. +When a track is selected it will easily show the existing detections and tracks across multiple cameras.

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MultiCam Tools

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  • Editing - Clicking on the or edit button for any camera will select that camera and edit an existing track or allow for the creation of a new track which is linked to existing tracks.
    • +
  • Deleting (Detection/Track) - deleting the detection will leave the track for the camera (if it exists on multiple frames) or will remove only the detection for the current frame. If it is the only detection left on that camera a prompt will ask if you want to delete the track. If you delete the track it will remove all detections associated with that TrackId across all of the frames.
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  • Unlinking - Will split off the track for the camera into a new trackId
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  • Linking - Will select the new camera and place it into Linking Mode. This requires selecting a track that is only that camera to link to the currently selected track. Attempting to link a track that exists across multiple cameras will prompt to split off the track before linking. To exit linking mode use the Esc Key
    • +
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Import/Export

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Importing and exporting of data works similarily to a single dataset except that it will occur on the current selected camera. Selecting "Starboard" camera and clicking export will only export the annotations for the "Starboard" camera. Similarily importing annotations will only occur on the selected camera as well.

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Running Pipelines

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Single Camera Pipelines

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Single camera pipelines can be used by selecting the camera and then running the pipeline from the pipeline menu.

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Note it is suggested that single camera pipelines only be run on empty datasets that don't have annotations already. When the pipeline finishes it will create tracks with TrackIds that may conflict with the other cameras. So it is reccomended that all tracks be removed before running single camera pipelines.

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MultiCamera/Stereo Pipelines

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There are specific pipelines that can be used on multi-camera or stereo datasets. These pipelines are related to the type of dataset (mutlicamera vs stereo) and the number of cameras that exist.

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PipelineCategoryTypeCamerasDescription
gmm
measurmentstereoscopic2Stereo pipeline used to compute fish length measurement
X-cam
X-cammulticamera2 or 3Multiple pipelines that can act on either 2 or 3 camera datasets.
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Pipelines and Training

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Both web and desktop versions are capable of running canned pipelines and model training on your ground truth data. This document is to help you decide which pipeline to run.

+

Help me choose

+

Contact our team if you need help choosing the right data analysis strategy. Please upload some sample data to viame.kitware.com to allow us to better assist you.

+

Detection

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Best for a series of images that have no temporal relationship, such as arial photography of multiple scenes. Also preferred if you only care about aggregate data for the dataset, such as max occurrences of an object per scene.

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PipelineUse case
arctic seal eo yolo
detector for color imagery
arctic seal ir yolo
detector for infrared
em tuna
detector for identifying individual features of tuna
fish without motion
simple single-class fish detector
generic proposals
generic object detector
motion
detect regions of motion in video or time-series images
pengcam kw
Penguin cam full-frame classifier
pengcam swfsc
Penguin cam full-frame classifier
scallop and flatfish
detector for benthic images
scallop and flatfish left
detector for benthic images, process left half of each frame only
scallop netharn
deep learning detector for benthic images
scallop netharn left
deep learning detector for benthic images, process left half of each frame only
sea lion multi class
detects bulls, cows, pups, etc
sea lion single class
detector
sefsc bw group
black-and-white fish detector (18 class, lower granularity) (oldest, v1)
sefsc bw species v2
black-and-white fish species detector (updated, v2)
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Tracking

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Run full tracking pipelines on your data. Appropriate for videos and image sequences that derive from a video. Tracking involves first running a detection pipeline then performing detection linking to form connected object tracks.

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Note some trackers can perform differently on time-series data depending on the annotation framerate selected when you upload or import your dataset. Higher framerates take longer to process, but may produce better results.

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PipelineUse case
em tuna
tracker
fish
simple fish tracker
fish.sfd
tracker
generic
generic object tracker puts generic boxes around arbitrary objects
motion
identifies moving object tracks
mouss
tracker, trained with data from MOUSS (Modular Optical Underwater Survey System)
sefsc bw *
same as above, but with tracking
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Utility

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An assortment of other types of utility pipelines. Utility pipelines are named utility_<name>.pipe and are unique in that they may take detections as inputs (but are not required to).

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PipelineUse case
add segmentations watershed
Transform existing bounding boxes into polygons
empty frame lbls {N}fr
Add an empty bounding box covering the whole media element for the purpose of adding full-frame classifier attributes. Unique tracks are created every N frames.
track user selections
Create tracks from user-initialized detection bounding boxes. Draw a box on the first frame of a track, and the pipeline will continue tracking the selected object(s)
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Training

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Run model training on ground truth annotations. Currently, training configurations are available to do object detection, object classification, and full-frame classification. Tracker training will be added in a future update.

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  • Full-frame classifiers can be trained on arbitrary multi-class labels. It's helpful to start with empty frame lbls utility pipe and add type annotations to each generated frame.
    • +
  • Object classifiers and detectors are trained on bounding boxes with arbitrary multi-class labels.
    • +
+

Overview

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    +
  • SVM (Support Vector Machine) configurations are usable with the smallest amount of ground-truth and train relatively quickly.
    • +
  • NetHarn is a pytorch deep learning framework that requires more input data: on the order of thousands of target examples. There are two architectures used. Netharn models can take up to several days to train.
      +
    • Cascade Faster R-CNN (cfrnn) for training box detectors
      • +
    • Mask R-CNN for training pixel classification and box detection
      • +
    • ResNet (Residual Network) for training full frame or secondary object classifiers
      • +
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Options

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Training options dialog

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New Model Name

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A recognizable name for the pipeline that results from the training run.

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Configuration File

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One of the configuration options in the table below.

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Labels.txt file

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This optional file controls the output classes that a newly trained model will generate.

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    +
  • Use if you annotated using higher granularity labels (such as species names) and want to train a classifier using more
    • +
  • Or you want to restrict your training session to only train on certain kinds of ground-truth data.
    • +
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The following example labels.txt shows how to train a FISH classifier by combining redfish and bluefish, preserve the ROCK label, and omit every other label.

+
1
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FISH redfish bluefish
+ROCK
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By default, all classes from all input datasets are preserved in the output model.

+

Use annotation frames only

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By default, training runs include all frames from the chosen input datasets, and frames without annotations are considered negative examples. If you choose to use annotated frames only, frames or images with zero annotations will be discarded. This option is useful for trying to train on datasets that are only partially annotated.

+

Configurations

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ConfigurationAvailabilityUse Case
detector_defaultbothalias: train detector netharn cfrnn
detector_netharn_cfrnnboth
detector_netharn_mask_rcnnboth
detector_svm_over_generic_detectionsbothgeneral purpose svm
detector_svm_over_fish_detectionsbothfish svm
frame_classifier_defaultbothalias: frame classifier netharn resnet
frame_classifier_netharn_resnetbothfull-frame
frame_classifier_svm_overn_resnetbothfull-frame
object_classifier_defaultbothalias: netharn resnet object classifier
object_classifier_netharn_resnetboth
yolodesktop onlycan train, but resulting model is not runnable with desktop yet
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Pipeline Import and Export

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Pipelines created outside of VIAME Web can be upload and shared with other users. See Pipeline Import and Export for details.

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Pipeline Import and Export

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Trained model downloads

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You can download your trained models through the administrative interface.

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Warning

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Use caution when modifying data through the admin interface

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    +
  • Open the admin interface at https://viame.kitware.com/girder (or myserver.com/girder if you host your own instance)
    • +
  • +

    Navigate to your personal workspace by clicking My Folders under your user dropdown in the top right corner.

    +

    My Folders

    +
    • +
  • +

    Navigate to the VIAME/VIAME Training Results folder and into the folder you wish to download

    +

    Select All

    +
    • +
  • +

    Select all items and download using the menu

    +

    Download

    +
    • +
+

Custom Pipeline Upload

+

It's possible to upload custom pipes to DIVE Web through the girder interface.

+
+

Warning

+

This feature is not yet standardized, and the instructions below may change.

+
+
    +
  1. Open the girder interface at /girder and create a new private folder called MyPipelines
      +
    1. For our demo instance, open https://viame.kitware.com/girder
      2. +
    +
    2. +
  2. Create a new folder in that private folder, and give it a name you'd like to associate with your new pipeline.
    3. +
  3. Upload one or more files inside your new pipeline subfolder:
      +
    1. A pipeline file ending in the .pipe file extension
      2. +
    2. Whatever other model .zip files are required by the pipe, named exactly as they appear in your .pipe file above.
      3. +
    +
    4. +
  4. Finally, set the pipeline folder metadata key trained_pipeline with value true.
    5. +
  5. Your new pipeline will be available under the Run Pipeline -> Trained menu from the DIVE web app.
    6. +
+

Upload Pipeline

+

Accepting input

+

If your pipe must accept input, set the pipeline folder metadata property requires_input to true .

+

Including base pipelines

+

User-uploaded pipelines may depend on any pipe already installed from the base image or an addon using include <pipename>.pipe . Depending on other user-uploaded pipes is not supported.

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Tip

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KWIVER pipe files can be exported for use with DIVE using kwiver pipe-config

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This page provides a general overview of the differences between desktop and web through screenshots.

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Support

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DIVE is free and open-source software published under an Apache 2.0 License in accordance with Kitware's Open Philosophy.

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Community Support

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For feedback, problems, questions, or feature requests, please reach out on Discourse. Our team would be happy to hear from you!

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Open a thread on Discourse

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Advanced Support

+

If you or your employer have an active support contract with Kitware and you need individualized support, please email us directly at viame-web@kitware.com.

+

Email us

+

Demos or Custom Development

+

DIVE is built and maintained by the Data & Analytics group at Kitware with financial support from contracts with government and commercial customers. If you would like to schedule a demo, sponsor custom software development, or purchase support related to DIVE, please email us or reach out through our contact page.

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Annotation Window

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Annotaton View Hightlight

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The annotation window will look different based on the current mode and what visibility toggles are enabled.

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  • Left Click an annotation to select it.
    • +
  • Right Click an annotation to select it and enter editing mode.
    • +
  • Middle Click and drag to pan the camera. This is useful when drawing annotations while zoomed such that you need to work on something slightly off-screen.
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Viewer modes

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    Default Mode - In the default mode the annotation will have bounds associated with it as well as a text name for the type and an associated confidence level. The color and styling will match what is specified in the Type List Style Settings. There are additional modes which can be toggled on and off in the Edit Bar.

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    Selected Annotation - selected annotations are cyan in color

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    Track Selected Mode

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    Editing Annotation - Editing annotations are cyan in color and provide handles to resize the annotation as well as a central handle to move the annotation to different spot.

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    Track Edit Mode

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    Creating Annotation - Creating an annotation requires clicking and dragging the mouse. Creating in the annotation window is indicated by a cursor crosshair and an icon that shows the type being drawn.

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    Track Creation Crosshair

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    Interpolated Annotation - If a track has an interpolated box on the current frame it will appear slightly faded.

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    Interpolated Editing

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Attribute Configuration

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Attributes can be configured through their main editing window. This provides several sections will allow for the customization of values.

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Main

+

The Main section is where the attribute Name, Datatype, any predefined values and the rendering color are specified

+

Datatype - Can either be Text, Number or Boolean data types.

+

If the track is Text type a list of predefined values can be used in dropdowns to make it eaiser to set attribute values.

+

Color - The color is used to determine the display color for the attribute within the track details and the default color utilized in any graphs or rendering of the attribute values.

+

Rendering

+

Attributes can be displayed within the annotation area next to the tracks they are associated with. +Within the Attribute Editor there is a tab for Rendering and when turned on there are settings which can specify how the attribute is displayed and what tracks it is displayed. +By default if no settings are touched the attributes are rendered below the bottom right of the track.

+

Attribute Rendering Demo +In the above demo the Detection attributes are rendered to the side of the track with custom text and colors for displaying each.

+

Attribute Rendering Settings

+

Attribute Rendering Settings

+

Under the Rendering Tab for the Attribute Editor if you turn on Render there will be numerous settings which determine how the attribute is displayed.

+
    +
  • Main Settings
      +
    • Selected Track - only display attributes for the selected track.
      • +
    • Filter Types - Will filter and only place the attribute rendering on the filtered track types.
      • +
    • Order - Order is used to determine the top-to-bottom order of the attributes that are rendered. A lower number means it has higher priority in the list.
      • +
    +
    • +
  • Layout
      +
    • Location - determines if the attribute is rendered inside or outside of the bounding box for the track
      • +
    • Layout - Horizontal will render attributes as Name:Value left to right. Vertical will stack them on top of each other. Much like in the demo to the right side of track.
      • +
    • Corner - SE/SW/NW specifies what corner to place the attributes in
      • +
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  • Display Name
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    • Display Name - The Name displayed at the top as a label for the attribute. You can add a : to the display name. It will automatically populate with the attribute name
      • +
    • Display Text Size - Text size in pixel for the display name. This will remain constant when scrolling in/out of the track. -1 is a default value to auto-calculate the size much like the confidence labels.
      • +
    • Display Color - Text color for the display text. If set to auto it will utilize the attribute color or the attribute value colors if they are specified. If Auto is turned off you can set a custom display text color
      • +
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  • Value
      +
    • Value Text Size - Text size in pixel for the value. This will remain constant when scrolling in/out of the track.
      • +
    • Value Color - Text color for the display text. If set to auto it will utilize the attribute color or attribute value colors if they are specified. If Auto is turned off you can set a custom display text color.
      • +
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  • Dimensions and Box Are only available under Vertical Layout
    • +
  • Dimensions
      +
    • % Type - For width and height it will size the area for the attribute based on the track width/height.
      • +
    • px Type - It will size the dimension of the width/height in pixels. This is useful if you have tracks of varying sizes and always want the attributes to fit properly.
      • +
    • auto Type - Only for the height this will automatically partition the height of the track into even parts based on the number of attributes that are being used.
      • +
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    • +
  • Box
      +
    • Draw Box - Basic setting to draw the box, if not selected the attribute will float there.
      • +
    • Thickness - Line Thickness for the outside of the box.
      • +
    • Box Color - Line color for the box. If set to auto it will utilize the attribute color.
      • +
    • Box Background - Will draw a background for the box instead of being transparent
      • +
    • Box Background Color - Background color for the box. If set to auto it will utilize the attribute color.
      • +
    • Box Background Opacity - The Opacity of the background color for the box
      • +
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Attribute Values

+

Attributes can specify specific render colors based on their values. This means that attributes with text values could be set so that specific values will have specific colors. I.E You may have an attribute for weather classification and it could be set so that Sunny is Yellow, Cloudy is Gray and Rainy is Blue.

+

Attribute Text Values

+

On loading this page any existing attribute text values or predefined values will be populated and assigned a random color. These colors can be clicked on and modified to suit needs. If a text value doesn't exist, add it to the predefined values and it will show up when you return to this tab.

+

When rendering attribute Values if the color is left to Auto it will utilize the colors specified here to render the text value for the attribute.

+

Attribute Text Value Colors

+

Attribute Numerical Values

+

If the Attribute Datatype is 'Number' that allows for the creation of color gradients to be assigned to the numerical values. +Numbers can be added by clicking on "Add Color". Each Number in the range can then be specified to be a specific color. Using D3.js it then creates a gradient between the colors in the list. To help with visualization a display of the gradient is located at the bottom of the editor next to the Add Colors button.

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Like the Text Values if attribute rendering value is set to auto color it will use the gradient to determine the color of the attribute value.

+

Attribute Text Number Colors

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Attribute Details Panel

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The Attribute Details Panel is a side panel that provides additional tools for Filtering and Viewing Attributes.

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Attributes details

+

Attribute Filtering

+

Filters the values of the selected type to reduce the number of results displayed. The filters can be applied to +"Track" or "Detection" attributes and are applied in order.

+

Attribute filters have an "Applies To" list which is a list of the Attribute key names that the filter will apply to. +There is a special name called 'all' which will cause the filter to apply to all items. +The settings for individual filters can be accessed by clicking on the

+

Numeric Filters

+

only operates on the attributes that have numeric values.

+
    +
  • Range Filtering
      +
    • Provides a slider with a custom range that can be used to filter the attribute values
      • +
    • There is a Comparison option ('>', '<', '>=', '<=') which will filter out items that don't be the currently set number value
      • +
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  • Top Filtering
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    • Provides the Top {X} numbers when sorted by their numeric value
      • +
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Numeric Filter

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String Filters

+

only operates on the attributes that have text values

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  • There are 4 options for text filtering: is, not, contains, starts
      +
    • is - simple equality comparison to confirm that the value is equal to the test value.
      • +
    • not - inverse of the equality expression.
      • +
    • contains - will pass the filter if the item contains any of the values provided.
      • +
    • starts - will pass the filter if the item starts with any of the values provided.
      • +
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Key Filters

+

Filter which will only show the selected Attribute names regardless of their current value.

+

The special name 'all' will show all of the attributes.

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Timeline Visualization

+

The timeline visualization only applies to numeric and detection attributes currently. It will graph the selected attributes in a chart at the bottom of the screen when a Track is selected.

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A Key Filter is used to determine which attributes to graph.

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Timeline Attributes Graph

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Attribute Track Filtering

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Attribute Track Filtering is used to apply a filter to the currently visible tracks based on the values defined in the Track or Detection Attributes

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Adding Attribute Filters

+

To add attribute filters open up the right side panel and go to the drop down for Attribute Track Filters

+

Attribute Track Filter Side Panel

+

A new Atribute Track Filter can be added by clicking on the new button

+

Attribute Track Filter Editor

+

Attribute Track Filter Options

+
    +
  • Filter Name - A displayed name for the track filter
    • +
  • Track Types - A list of tracks that the filter will apply to. If it is empty it will apply to all track types.
    • +
  • Attribute Type - Track or Detection Attribute type
    • +
  • Attribute - Dropdown list of the configured Track or Detection Attributes that is determined by the Attribute Type selection
    • +
  • Enabled - The Filter is enabled by default. This means on loading the filter is active and removing tracks that meet the condition
    • +
  • Primary Display - Displays the filter in the left hand side of the primary interface. Where the Confidence Filter and track types are listed
    • +
  • User Editable - Instead of utilizing a static value, users can change the filter value to customize how it is filtering.
      +
    • If the Operator is a range slider this would include providing a slider for the user.
      • +
    • If the Operator is a conditional (>,<,>=,<=,!=,==) or contains it will provide an input box for users to enter data
      • +
    • If the Operator is 'in' for text it will include a multi dropdown to add in custom works to check for
      • +
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    • +
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Attribute Track Filter Editor Range +Atribute Track Filter with Range Settings

+

After adding multiple Track Attribute Filters they are listed in the side panel:

+

Attribute Track Filter Side Panel List

+

Primary Track Atribute Filter View

+

All filters that have the Primary Display switched to on will be displayed in left hand side of the main viewer:

+

Attribute Track Filter Primary Display

+
    +
  • The Track Attribute Filter is collapsable and expandable.
    • +
  • The Filter Icon with the number next to it indicates the number of currently enabled filters. This is useful if there are enabled filters that are not in the primary display.
    • +
  • The Settings Icon will open the Track Attribute Filter side panel directly for editing or modification of the existing filters.
    • +
  • Each individual filter has a checkbox to enable/disable the filter.
    • +
  • If the filter is User Editable there is an interface (range slider, input box, multi-select) to allow the user to change the filter values.
    • +
  • Hovering over the info icon will provide more information about the filter
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Attribute Track Filter Primary Display Details

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Attributes

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Concepts and Terms

+
    +
  • Attribute Definitions are templates. They have a name and a value type, such as String, Number, or Boolean. Definitions must be created before attribute values can be assigned. Tracks and detections each have their own set of definitions.
    • +
  • Track Attributes apply to an entire track. Each track can only have one value for each track attribute definition.
    • +
  • Detection Attributes can be different for every frame in a track.
    • +
+

Example Attribute Definition

+
    +
  • Track Attributes:
      +
    • CompleteTrack: Boolean
      • +
    • FishLength: number (cm)
      • +
    +
    • +
  • Detection Attributes:
      +
    • Swimming: Boolean
      • +
    • Eating: Boolean
      • +
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Example Attribute Values

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    +
  • Fish Track 1
      +
    • Track Attributes
        +
      • { "FishLength": 20 }
        • +
      +
      • +
    • Detection Attributes
        +
      • Frame 1
          +
        • { "Eating": True }
          • +
        +
        • +
      • Frame 2
          +
        • { "Swimming": False, "Eating": True }
          • +
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Info

+

All Attribute definitions do not need to be assigned to values. CompleteTrack (Track Attribute) and Swimming for Frame 1 (Detection Attribute) weren't assigned in this example.

+
+

Using the Attributes Panel

+

Track Details Full Panel

+
    +
  1. Select an existing track or detection with left click.
    2. +
  2. Open the Track Details page by clicking on the button in the Type List area or pressing the A key.
    3. +
  3. Here you will see the track/detection type, confidence pairs associated with it and then a list of track and detection attributes.
    4. +
  4. For attributes there are two sections
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    1. Track Attributes - All track level attributes
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    2. Detection Attributes - attributes associated with the track on a per frame basis
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  5. Attributes can be sorted by their name (alphabetically) or by their numeric value. Clicking on the or the button will swap between the two.
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  6. Attribute Filtering
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    1. The Attribute filtering icon will change color when filtering is being applied.
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    2. Clicking on the filter icon will bring up the Attributes Details Panel
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Info

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Attributes found during import in a VIAME CSV will automatically show up in the list. The data type of the attribute is guessed by examining values and may need to be manually corrected.

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By default, all attributes associated with the dataset are visible and editable. You can hide unused attributes by clicking the toggle next to Attribute.

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Show Unused Hide Unused
'Edit Attributes''View Attributes'
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Creating Attribute Definitions

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  1. Click on the Attribute icon for in either the track or detection attribute area.
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    1. New Attribute Panel
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  2. Enter a unique name
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      2. A predefined list of text to choose from, separated by newline.
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  4. Click Save to add the new attribute
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Editing Attribute Definitions

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Click the button next to an existing attribute to edit its definition.

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Edit Attribute Panel

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Warning

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Editing or deleting an attribute definition doesn’t change any existing attribute values.

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  • Deleting an attribute definition will cause it to disappear from the list, but the values will remain in the database.
    • +
  • Editing an attribute definition will change the way the controls behave, but will not change any existing set values.
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Setting Attribute Values

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  1. Click on the attribute value when in viewing mode to edit and set the attribute
    2. +
  2. Or directly edit the value field when in the attribute editing mode
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  3. Setting an attribute to the empty value will remove the value from the track/detection
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Importing and Exporting Attributes

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Attributes are part of the dataset configuration that can be imported and exported.

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  1. Set up a dataset with all the attributes you need
    2. +
  2. In the Download menu, choose Configuration.
    3. +
  3. Use this configuration with other datasets
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    1. Use the Import button to load this configuration to other datasets.
      2. +
    2. Upload the configuration file when you create new datasets to initialize them with these attribute definitions.
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    4. +
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Applying Attributes Demo

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Applying Attributes Demo

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Group Manager

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Track List Highlighted

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The group manager is one pane of the context sidebar.

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Feature overview

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DIVE supports complex group annotation.

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  • Groups can be interpreted as activity participation. For example, two Person type tracks participate in a Conversation activity.
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  • Groups can be used to represent most types of multi-annotation collections.
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See the data format documentation for the complete capabilities of group annotations in the DIVE json schema.

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Group List Controls

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Group List

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Group Type List

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The group type summary list allows for enabling and disabling annotations based on their group and bulk-editing group type characteristics.

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  • Groups do not have separate "selected" and "editing" states, so selecting a group puts it into editing mode.
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  • Group type styles can be edited in the same fashion as track type styles in the left sidebar using (the edit pencil).
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Group Instance List

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Each group instance includes the following.

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  • The group id
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  • The group type
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  • A list of member track ids that are part of the group.
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Group Editor

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Group Editor

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To enter group edit mode, click a group's ID number in the group list.

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  • Add new tracks to a group by first entering group edit mode, then selecting tracks to add (in the annotation window, the sidebar, or any UI where track selection can happen)
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  • (next to a track) will remove a track from a group.
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  • Use the frame range input boxes to adjust the start and end frame numbers that a track participates in a group.
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  • will set a frame input box to the current frame.
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  • will create a new sub-interval participation range for a track within a group.
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  • will remove a sub-interval participation range.
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  • Delete Group will delete a group without deleting its member tracks.
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Some notes about group editing behavior.

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  • If you delete a track, and the track was the only track remaining in one or more groups, those groups will also be deleted.
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  • If you delete a group, its member tracks will not be deleted no matter how many members there are.
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  • The group's composite range (shown as disabled begin and end frames in the group editor) is the maximum overlapping range of all sub-intervals of all member tracks.
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Example data

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The group feature was initially developed for compatibility with the The Multiview Extended Video with Activities (MEVA) dataset. Find example data at mevadata.org.

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Navigation Bar Highlighted

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The navigation bar is the row of controls at the very top of the window.

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  • Data navigates to the folder that contains the current dataset.
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  • Run Pipeline will launch a pipeline dropdown menu.
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    • NOTE Current annotations will be replaced by the pipeline output when it is complete. You should not perform annotations while a pipeline is running.
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  • Import allows the upload of several kinds of files
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    • overwrite the current annotations with a .json or .csv annotation file.
      • +
    • overwrite the style and attribute configuration with a config .json file.
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  • Download (Web) or Export (Desktop) allows for exporting all or part of the current dataset.
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    • Exclude Tracks - this allows you to remove tracks below a specific confidence threshold when exporting the CSV. It is how you can export only the higher detections/tracks after running a pipeline.
      • +
    • Checked Types Only - allows you to only export the annotations of types that are currently checked in the type list.
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    • Web-specific options are documented in the web download section
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  • Clone is documented in the web clone section.
    • +
  • Help provides mouse/keyboard shortcuts as well as a link to this documentation.
    • +
  • is used to save outstanding annotation changes and any custom styles applied to the different types. Changes are not immediately committed and will instead update the save icon with a number badge indicating how many changes are outstanding. Clicking this button will commit your changes and reset the count to zero.
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Editing Bar

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The editing bar is the second row below navigation.

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Editing Status Indicator

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Editing Status Indicator

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On the far left, the editing mode status indicator shows you what mode you're in, what input is expected, and usually reminds you to press Esc to cancel.

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Edit Mode Toggles

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Editing mode toggles control the type of geometry being created or edited during annotation. See the Annotation Quickstart for an in-depth guide to annotation.

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Visibility Toggles

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The visibility section contains toggle buttons that control the different types of annotation data can be hidden or shown.

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  • toggles rectangle visibility
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  • toggles polygon visibility
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  • toggles head/tail line visibility
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  • toggles annotation type & confidence text visibility
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  • toggles a cursor hover tooltip, helpful for reviewing very dense scenes with lots of overlap.
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  • toggles track trail visibility. The track trail is configurable to show up to 100 frames both ahead and behind each bounding box. The trail line is made of bounding box midpoints.
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Timeline

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The timeline provides a control bar and a few different temporal visualizations. All timeline visualizations are updated live by type confidence slider(s), type checkboxes, and track checkboxes.

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Timeline Highlighed

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Timeline View

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Control Bar

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  • will minimize the timeline.
    • +
  • Detections button selects the Detection Count histogram timeline view.
    • +
  • Events button selects the Event View, which is a Gantt-style track chart.
    • +
  • Groups button selects the Group View, which is a Gantt-style group chart.
    • +
  • are standard media playback controls.
    • +
  • opens the video playback speed controls and volume controls, respectively.
    • +
  • frame ## shows the current frame number.
    • +
  • will enable camera lock, which causes the annotation view to auto-zoom and pan to whatever annotation is currently selected. This is useful when reviewing the output of a pipeline.
    • +
  • or the R key will reset zoom/pan in the annotation view.
    • +
  • will open the image contrast adjustment panel.
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Detection Count

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Timeline View

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This is the default visualization. It is a stacked histogram of track/detection types over the duration of the sequence.

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    +
  • Line color matches the annotation type style.
    • +
  • Top green line is the sum count of all annotations of all types on each frame.
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Event View

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Event Viewer

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The event viewer shows the start/stop frames for all tracks. It is a kind of Gantt chart, also similar to a swimlane chart but with more compact packing.

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  • The tracks are drawn using their corresponding type color.
    • +
  • When hovering over any track the TrackID will display.
    • +
  • Clicking on a track will select it and jump to the track at the selected frame.
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Group View

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Group Viewer

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The group viewer is just like the event viewer, but shows the start and end times of track groups, colored by group types. Switching to the group view changes the coloring scheme of annotations in the annoation window.

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Interpreting

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Event Viewer Single Frame Detection +

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Single frame detections are presented as single frames with spaces between.

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A selected track will be cyan and will cause all other tracks to fade out. If a selected track is solid cyan, that means every frame in the track is a keyframe.

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Event Viewer Interpolated Track +

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A selected interpolated track will show the areas of interpolation as yellow lines, the keyframes as cyan ticks, and gaps as empty regions.

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Track List

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Track List Highlighted

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Track List Controls

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Track List

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The track list allows for selecting and editing tracks. A selected track will look different depending on whether it's a single detection or a multi-frame track.

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  • opens track creation settings
    • +
  • deletes all tracks in the track list
    • +
  • Track/Detection begins creation of a new annotation.
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Single Detection

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Track List Selected Detection

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A track that spans a single frame.

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    +
  • deletes the entire detection annotation
    • +
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    • +
  • selects the detection and toggles edit mode.
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Warning

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The button will remove the whole track if it's longer than a single detection. To remove individual keyframes, use (the keyframe toggle button).

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Multi-frame track

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Track List Selected Track

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A track that spans multiple frames and has more options

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    +
  • deletes the entire track
    • +
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    • +
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  • turns interpolation on/off for the interval between keyframes.
    • +
  • jumps to the first frame of track
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  • jumps to the previous keyframe
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  • jumps to the next keyframe
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  • jumps to the last frame of the track
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Type List

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Type List

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Each dataset maintains its own list of types, and types can be defined on-the-fly.

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The Type List is used to control visual styles of the different types as well as filter out types that don't need to be displayed.

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    +
  • The checkbox next to each type name can be used to toggle types on and off.
    • +
  • toggles the sort order between alphabetical and by number of annotations of each type.
    • +
  • opens the type settings menu.
    • +
  • will remove the type from any visible track or delete the track if it is the only type.
    • +
  • will switch the left sidebar panel to show the track attribute editor (and group editor) view.
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Type Style Editor

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Type Editor

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The type style editor controls the visual appearance of annotations in all other areas of the application. Launch the editor by hovering over a type row in the list and clicking (the edit pencil).

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    +
  • Type Name - You can change the name for the type and it will update all subsequent tracks that are using that Type.
    • +
  • Show Label - show the type name label in the text above each box.
    • +
  • Show Confidence - show the confidence value in the text above each box.
    • +
  • Box Border Thickness - the line thickness can be changed to make a type stand out more or less
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  • Fill - Fill allows the bounding box to be filled. This is useful for annotation of background items in an image.
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  • Border & Fill Opacity - The opacity of the lines and the fill can be set here.
    • +
  • Color - The color for the type within the annotations and the timeline views.
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Type Settings Menu

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Click the button in the type list heading to open type settings.

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Ad-hoc mode

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Type Settings

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In ad-hoc mode, new object classes are added as you annotate. The type list updates automatically when new classes are added or the last member of a class is deleted.

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    +
  • Set Lock Types to off for ad-hoc type creation.
    • +
  • Set Show Empty to still show manually defined types with no track/detection examples in the type list.
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Locked mode

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TypeAddDialog

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In locked mode, only a specified list of classes can be used, and must be selected or autocompleted from the list for each object.

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    +
  • Set Lock Types to on to constrain annotation types to those already defined.
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  • You can add new types using the Types button under type settings.
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Web Version

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Info

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VIAME Web is automatically updated at 2AM EST/EDT every Thursday. If you are running a pipeline or training workflow during update, it will be interrupted and restarted.

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Also note that pipelines and training jobs on our public server are limited to 3 days of execution time on 1 GPU. If you have a job that needs more time, please run it with the Desktop version, your own cloud environment like GCP, or contact us for support.

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Use our public server +Deploy your own

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Register for an account

+

A user account is required to store data and run pipelines on viame.kitware.com.

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    +
  1. Visit viame.kitware.com
    2. +
  2. Click Register
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Uploading data

+

Upload Dialog

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Uploading individual files

+
    +
  • Open the DIVE Homepage, and navigate to the Data tab.
    • +
  • Click the User Home button at the top left of the data browser.
    • +
  • Click either your Public or Private folder, or make a new folder and navigate into it.
    • +
  • Click the Upload button that appears in the toolbar.
    • +
  • Select a video or multi-select a group of image frames.
      +
    • Use Ctrl or Shift to click every file you want to upload.
      • +
    • If you already have annotations.csv or an annotation or configuration JSON select that too.
      • +
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  • Choose a name for the dataset and enter the optional playback frame rate or select other optional files.
    • +
  • Press Start Upload
    • +
  • In the data browser, a new Launch Annotator button will appear next to your data
      +
    • If you uploaded a video, it may need to transcode first
      • +
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Info

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All video uploaded to the web server will be transcoded as mp4/h264.

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Uploading zip files

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A zip import can have one of the following file combinations:

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    +
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    • +
  • One video with an optional annotation file and an optional configuration file
    • +
  • One or more folders which contain the above examples (These will be converted to separate datasets)
    • +
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Zip import also accepts zip archive files that were generated by the Download Everything export button.

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Download or export data

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Download Files

+

Data can be downloaded from the FileBrowser by clicking the checkmark to the left of a dataset name. This allows you to download the source images/video, the current detection file converted to .csv or everything including all backups of the detection files.

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    +
  • Image Sequence or Video will export the source media as a .zip
    • +
  • Detections will export a VIAME .csv of annotations +
    • +
  • Configuration will export a DIVE configuration .json
    • +
  • Everything will export all of the above.
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Sharing data with teams

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This information will be relevant to teams where several people need to work on the same data.

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Concepts

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By default, data uploaded to your personal user space follows these conventions.

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    +
  • Data in the Public folder is readable by all registered users, but writable only by you by default.
    • +
  • Data in the Private folder is only visible to you by default.
    • +
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Working with teams

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A common scenario is for a group to have a lot of shared data that several members should be able to view and annotate.

+

For most teams, we recommend keeping data consolidated under a single account then following the sharing instructions below to make sure all team members have appropriate access.

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It's easiest to create a single parent folder to share and then put all individual datasets inside that parent.

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Warning

+

You should note that 2 people cannot work on the same video at the same time. Your team should coordinate on who will work on each dataset.

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Managing Permissions

+

DIVE uses Girder's Permissions Model.

+

There are four levels of permission a User can have on a resource.

+
    +
  • No permission (cannot view, edit, or delete a resource)
    • +
  • READ permission (can view and download resources)
    • +
  • WRITE permission (includes READ permission, can edit the properties of a resource)
    • +
  • ADMIN also known as own permission, (includes READ and WRITE permission, can delete the resource and also control access on it)
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Granting access to others

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    +
  • Navigate to your data in the data browser.
    • +
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    Right click a dataset or a folder of datasets and choose Access Control

    +

    Access Control Menu

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    Search for and select users you want to grant access to.

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    Select the correct permissions in the drop-down next to each user.

    +

    Sharing Menu

    +
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  • +

    If this is a folder of datasets, enable the Include Subfolders switch.

    +
    • +
  • Click Save. These users should now be able to view and edit your data.
    • +
+

Data Shared with you

+

You can view data shared with you by selecting the Shared With Me tab above the data browser.

+

Shared With Me Tab

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Sharing URLs

+

You can copy and paste any URL from the address bar and share with collaborators. This includes folders in the data browser as well as direct links to the annotation editor.

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Dataset Clones

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A clone is a shallow copy of a dataset.

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  • It has its own annotations, and can be run through pipelines and shared with others.
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  • It references the media (images or video) of another dataset.
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Warning

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Be careful when deleting data that has been cloned. Clones "point to" their source dataset for loading media, so if the source is deleted, all of its clones will fail to load.

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Clone use cases

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  1. When you want to use or modify data that doesn't belong to you, such as data from the shared training collection or from other users.
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  2. When you want to run several different pipelines in parallel on the same input data and compare the results.
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Warning

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Merging cloned data back to the source is not currently supported. To collaborate with others on annotations, the sharing use case above is preferred.

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How to clone

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  • Open the dataset you wish to clone by clicking Launch Annotator.
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  • Click the Clone button in the top navigation bar on the right side.
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  • Choose a name and location for the clone within your own workspace.
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Revision History

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Revision History

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Revision history is accessible through the annotation UI in the Web version. Each time you press Save, a new revision of your annotation state is created. It is possible to inspect (or "check out") past revisions. The viewer will be in read-only mode when past revisions are checked out because only the most recent revision can be modified.

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  • Click History in the Navigation Bar area to open the Revision History panel.
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    • Each row shows the revision datetime, the action that caused it, and the number of additions and deletions.
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    • Click a row to check out a previous revision
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  • Click Download when a previous revision is checked out to download the annotation CSV from that revision.
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  • Click Clone when a previous revision is checked out to create a new clone of the dataset from that revision.
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Info

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Revision roll-back is not yet supported, but will be added in a future update. If you need to roll-back to a previous version of your anotation state

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  • check out the old version and create a CSV download, then re-upload the older version using import;
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  • or contact us for support.
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circle{fill:var(--md-mermaid-label-bg-color)}.actor{fill:var(--md-mermaid-sequence-actor-bg-color);stroke:var(--md-mermaid-sequence-actor-border-color)}text.actor>tspan{fill:var(--md-mermaid-sequence-actor-fg-color);font-family:var(--md-mermaid-font-family)}line{stroke:var(--md-mermaid-sequence-actor-line-color)}.actor-man circle,.actor-man line{fill:var(--md-mermaid-sequence-actorman-bg-color);stroke:var(--md-mermaid-sequence-actorman-line-color)}.messageLine0,.messageLine1{stroke:var(--md-mermaid-sequence-message-line-color)}.note{fill:var(--md-mermaid-sequence-note-bg-color);stroke:var(--md-mermaid-sequence-note-border-color)}.loopText,.loopText>tspan,.messageText,.noteText>tspan{stroke:none;font-family:var(--md-mermaid-font-family)!important}.messageText{fill:var(--md-mermaid-sequence-message-fg-color)}.loopText,.loopText>tspan{fill:var(--md-mermaid-sequence-loop-fg-color)}.noteText>tspan{fill:var(--md-mermaid-sequence-note-fg-color)}#arrowhead 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Hn(e,{viewport$:t,target$:r,print$:o}){return T(...R(".annotate:not(.highlight)",e).map(n=>wn(n,{target$:r,print$:o})),...R("pre:not(.mermaid) > code",e).map(n=>On(n,{target$:r,print$:o})),...R("pre.mermaid",e).map(n=>_n(n)),...R("table:not([class])",e).map(n=>Cn(n)),...R("details",e).map(n=>Mn(n,{target$:r,print$:o})),...R("[data-tabs]",e).map(n=>kn(n,{viewport$:t,target$:r})),...R("[title]",e).filter(()=>G("content.tooltips")).map(n=>Ge(n)))}function Ra(e,{alert$:t}){return t.pipe(v(r=>T($(!0),$(!1).pipe(Ye(2e3))).pipe(m(o=>({message:r,active:o})))))}function $n(e,t){let r=P(".md-typeset",e);return H(()=>{let o=new g;return o.subscribe(({message:n,active:i})=>{e.classList.toggle("md-dialog--active",i),r.textContent=n}),Ra(e,t).pipe(y(n=>o.next(n)),_(()=>o.complete()),m(n=>F({ref:e},n)))})}function Pa({viewport$:e}){if(!G("header.autohide"))return $(!1);let t=e.pipe(m(({offset:{y:n}})=>n),Ke(2,1),m(([n,i])=>[nMath.abs(i-n.y)>100),m(([,[n]])=>n),Y()),o=We("search");return 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t=R("input",e),r=E("meta",{name:"theme-color"});document.head.appendChild(r);let o=E("meta",{name:"color-scheme"});document.head.appendChild(o);let n=At("(prefers-color-scheme: light)");return H(()=>{let i=new g;return i.subscribe(a=>{if(document.body.setAttribute("data-md-color-switching",""),a.color.media==="(prefers-color-scheme)"){let s=matchMedia("(prefers-color-scheme: light)"),c=document.querySelector(s.matches?"[data-md-color-media='(prefers-color-scheme: light)']":"[data-md-color-media='(prefers-color-scheme: dark)']");a.color.scheme=c.getAttribute("data-md-color-scheme"),a.color.primary=c.getAttribute("data-md-color-primary"),a.color.accent=c.getAttribute("data-md-color-accent")}for(let[s,c]of Object.entries(a.color))document.body.setAttribute(`data-md-color-${s}`,c);for(let s=0;sa.key==="Enter"),ne(i,(a,s)=>s)).subscribe(({index:a})=>{a=(a+1)%t.length,t[a].click(),t[a].focus()}),i.pipe(m(()=>{let a=Te("header"),s=window.getComputedStyle(a);return 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n=t.pipe(m(({offset:{y:a}})=>a),Ke(2,1),m(([a,s])=>a>s&&s>0),Y()),i=r.pipe(m(({active:a})=>a));return Q([i,n]).pipe(m(([a,s])=>!(a&&s)),Y(),U(o.pipe(Le(1))),oe(!0),at({delay:250}),m(a=>({hidden:a})))}function pi(e,{viewport$:t,header$:r,main$:o,target$:n}){let i=new g,a=i.pipe(ee(),oe(!0));return i.subscribe({next({hidden:s}){e.hidden=s,s?(e.setAttribute("tabindex","-1"),e.blur()):e.removeAttribute("tabindex")},complete(){e.style.top="",e.hidden=!0,e.removeAttribute("tabindex")}}),r.pipe(U(a),X("height")).subscribe(({height:s})=>{e.style.top=`${s+16}px`}),d(e,"click").subscribe(s=>{s.preventDefault(),window.scrollTo({top:0})}),Za(e,{viewport$:t,main$:o,target$:n}).pipe(y(s=>i.next(s)),_(()=>i.complete()),m(s=>F({ref:e},s)))}function li({document$:e}){e.pipe(v(()=>R(".md-ellipsis")),re(t=>yt(t).pipe(U(e.pipe(Le(1))),b(r=>r),m(()=>t),ye(1))),b(t=>t.offsetWidth{let r=t.innerText,o=t.closest("a")||t;return o.title=r,Ge(o).pipe(U(e.pipe(Le(1))),_(()=>o.removeAttribute("title")))})).subscribe(),e.pipe(v(()=>R(".md-status")),re(t=>Ge(t))).subscribe()}function mi({document$:e,tablet$:t}){e.pipe(v(()=>R(".md-toggle--indeterminate")),y(r=>{r.indeterminate=!0,r.checked=!1}),re(r=>d(r,"change").pipe(Fr(()=>r.classList.contains("md-toggle--indeterminate")),m(()=>r))),ne(t)).subscribe(([r,o])=>{r.classList.remove("md-toggle--indeterminate"),o&&(r.checked=!1)})}function es(){return/(iPad|iPhone|iPod)/.test(navigator.userAgent)}function fi({document$:e}){e.pipe(v(()=>R("[data-md-scrollfix]")),y(t=>t.removeAttribute("data-md-scrollfix")),b(es),re(t=>d(t,"touchstart").pipe(m(()=>t)))).subscribe(t=>{let r=t.scrollTop;r===0?t.scrollTop=1:r+t.offsetHeight===t.scrollHeight&&(t.scrollTop=r-1)})}function 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o=="string"?o=document.createTextNode(o):o.parentNode&&o.parentNode.removeChild(o),r?t.insertBefore(this.previousSibling,o):t.replaceChild(o,this)}}}));function ts(){return location.protocol==="file:"?gt(`${new URL("search/search_index.js",Yr.base)}`).pipe(m(()=>__index),B(1)):De(new URL("search/search_index.json",Yr.base))}document.documentElement.classList.remove("no-js");document.documentElement.classList.add("js");var rt=No(),Rt=Jo(),wt=en(Rt),Br=Go(),_e=pn(),ur=At("(min-width: 960px)"),hi=At("(min-width: 1220px)"),bi=tn(),Yr=we(),vi=document.forms.namedItem("search")?ts():qe,Gr=new g;Wn({alert$:Gr});var Jr=new g;G("navigation.instant")&&zn({location$:Rt,viewport$:_e,progress$:Jr}).subscribe(rt);var di;((di=Yr.version)==null?void 0:di.provider)==="mike"&&Gn({document$:rt});T(Rt,wt).pipe(Ye(125)).subscribe(()=>{Be("drawer",!1),Be("search",!1)});Br.pipe(b(({mode:e})=>e==="global")).subscribe(e=>{switch(e.type){case"p":case",":let t=me("link[rel=prev]");typeof t!="undefined"&&st(t);break;case"n":case".":let r=me("link[rel=next]");typeof r!="undefined"&&st(r);break;case"Enter":let o=Re();o instanceof HTMLLabelElement&&o.click()}});li({document$:rt});mi({document$:rt,tablet$:ur});fi({document$:rt});ui({viewport$:_e,tablet$:ur});var tt=Rn(Te("header"),{viewport$:_e}),$t=rt.pipe(m(()=>Te("main")),v(e=>Fn(e,{viewport$:_e,header$:tt})),B(1)),rs=T(...ie("consent").map(e=>fn(e,{target$:wt})),...ie("dialog").map(e=>$n(e,{alert$:Gr})),...ie("header").map(e=>Pn(e,{viewport$:_e,header$:tt,main$:$t})),...ie("palette").map(e=>jn(e)),...ie("progress").map(e=>Un(e,{progress$:Jr})),...ie("search").map(e=>ti(e,{index$:vi,keyboard$:Br})),...ie("source").map(e=>ai(e))),os=H(()=>T(...ie("announce").map(e=>mn(e)),...ie("content").map(e=>Hn(e,{viewport$:_e,target$:wt,print$:bi})),...ie("content").map(e=>G("search.highlight")?ri(e,{index$:vi,location$:Rt}):L),...ie("header-title").map(e=>In(e,{viewport$:_e,header$:tt})),...ie("sidebar").map(e=>e.getAttribute("data-md-type")==="navigation"?Ur(hi,()=>Qr(e,{viewport$:_e,header$:tt,main$:$t})):Ur(ur,()=>Qr(e,{viewport$:_e,header$:tt,main$:$t}))),...ie("tabs").map(e=>si(e,{viewport$:_e,header$:tt})),...ie("toc").map(e=>ci(e,{viewport$:_e,header$:tt,main$:$t,target$:wt})),...ie("top").map(e=>pi(e,{viewport$:_e,header$:tt,main$:$t,target$:wt})))),gi=rt.pipe(v(()=>os),$e(rs),B(1));gi.subscribe();window.document$=rt;window.location$=Rt;window.target$=wt;window.keyboard$=Br;window.viewport$=_e;window.tablet$=ur;window.screen$=hi;window.print$=bi;window.alert$=Gr;window.progress$=Jr;window.component$=gi;})(); +//# sourceMappingURL=bundle.1e8ae164.min.js.map + diff --git a/assets/javascripts/bundle.1e8ae164.min.js.map b/assets/javascripts/bundle.1e8ae164.min.js.map new file mode 100644 index 000000000..6c33b8e8e --- /dev/null +++ b/assets/javascripts/bundle.1e8ae164.min.js.map @@ -0,0 +1,7 @@ +{ + "version": 3, + "sources": ["node_modules/focus-visible/dist/focus-visible.js", "node_modules/clipboard/dist/clipboard.js", "node_modules/escape-html/index.js", "src/templates/assets/javascripts/bundle.ts", "node_modules/rxjs/node_modules/tslib/tslib.es6.js", "node_modules/rxjs/src/internal/util/isFunction.ts", "node_modules/rxjs/src/internal/util/createErrorClass.ts", "node_modules/rxjs/src/internal/util/UnsubscriptionError.ts", "node_modules/rxjs/src/internal/util/arrRemove.ts", "node_modules/rxjs/src/internal/Subscription.ts", "node_modules/rxjs/src/internal/config.ts", "node_modules/rxjs/src/internal/scheduler/timeoutProvider.ts", "node_modules/rxjs/src/internal/util/reportUnhandledError.ts", "node_modules/rxjs/src/internal/util/noop.ts", "node_modules/rxjs/src/internal/NotificationFactories.ts", "node_modules/rxjs/src/internal/util/errorContext.ts", "node_modules/rxjs/src/internal/Subscriber.ts", "node_modules/rxjs/src/internal/symbol/observable.ts", "node_modules/rxjs/src/internal/util/identity.ts", "node_modules/rxjs/src/internal/util/pipe.ts", "node_modules/rxjs/src/internal/Observable.ts", "node_modules/rxjs/src/internal/util/lift.ts", "node_modules/rxjs/src/internal/operators/OperatorSubscriber.ts", "node_modules/rxjs/src/internal/scheduler/animationFrameProvider.ts", "node_modules/rxjs/src/internal/util/ObjectUnsubscribedError.ts", "node_modules/rxjs/src/internal/Subject.ts", "node_modules/rxjs/src/internal/scheduler/dateTimestampProvider.ts", "node_modules/rxjs/src/internal/ReplaySubject.ts", "node_modules/rxjs/src/internal/scheduler/Action.ts", "node_modules/rxjs/src/internal/scheduler/intervalProvider.ts", "node_modules/rxjs/src/internal/scheduler/AsyncAction.ts", "node_modules/rxjs/src/internal/Scheduler.ts", "node_modules/rxjs/src/internal/scheduler/AsyncScheduler.ts", "node_modules/rxjs/src/internal/scheduler/async.ts", "node_modules/rxjs/src/internal/scheduler/AnimationFrameAction.ts", "node_modules/rxjs/src/internal/scheduler/AnimationFrameScheduler.ts", "node_modules/rxjs/src/internal/scheduler/animationFrame.ts", "node_modules/rxjs/src/internal/observable/empty.ts", "node_modules/rxjs/src/internal/util/isScheduler.ts", "node_modules/rxjs/src/internal/util/args.ts", "node_modules/rxjs/src/internal/util/isArrayLike.ts", "node_modules/rxjs/src/internal/util/isPromise.ts", "node_modules/rxjs/src/internal/util/isInteropObservable.ts", "node_modules/rxjs/src/internal/util/isAsyncIterable.ts", "node_modules/rxjs/src/internal/util/throwUnobservableError.ts", "node_modules/rxjs/src/internal/symbol/iterator.ts", "node_modules/rxjs/src/internal/util/isIterable.ts", "node_modules/rxjs/src/internal/util/isReadableStreamLike.ts", "node_modules/rxjs/src/internal/observable/innerFrom.ts", "node_modules/rxjs/src/internal/util/executeSchedule.ts", "node_modules/rxjs/src/internal/operators/observeOn.ts", "node_modules/rxjs/src/internal/operators/subscribeOn.ts", "node_modules/rxjs/src/internal/scheduled/scheduleObservable.ts", "node_modules/rxjs/src/internal/scheduled/schedulePromise.ts", "node_modules/rxjs/src/internal/scheduled/scheduleArray.ts", "node_modules/rxjs/src/internal/scheduled/scheduleIterable.ts", "node_modules/rxjs/src/internal/scheduled/scheduleAsyncIterable.ts", "node_modules/rxjs/src/internal/scheduled/scheduleReadableStreamLike.ts", "node_modules/rxjs/src/internal/scheduled/scheduled.ts", "node_modules/rxjs/src/internal/observable/from.ts", "node_modules/rxjs/src/internal/observable/of.ts", "node_modules/rxjs/src/internal/observable/throwError.ts", "node_modules/rxjs/src/internal/util/EmptyError.ts", "node_modules/rxjs/src/internal/util/isDate.ts", "node_modules/rxjs/src/internal/operators/map.ts", "node_modules/rxjs/src/internal/util/mapOneOrManyArgs.ts", "node_modules/rxjs/src/internal/util/argsArgArrayOrObject.ts", "node_modules/rxjs/src/internal/util/createObject.ts", "node_modules/rxjs/src/internal/observable/combineLatest.ts", "node_modules/rxjs/src/internal/operators/mergeInternals.ts", "node_modules/rxjs/src/internal/operators/mergeMap.ts", "node_modules/rxjs/src/internal/operators/mergeAll.ts", "node_modules/rxjs/src/internal/operators/concatAll.ts", "node_modules/rxjs/src/internal/observable/concat.ts", "node_modules/rxjs/src/internal/observable/defer.ts", "node_modules/rxjs/src/internal/observable/fromEvent.ts", "node_modules/rxjs/src/internal/observable/fromEventPattern.ts", "node_modules/rxjs/src/internal/observable/timer.ts", "node_modules/rxjs/src/internal/observable/merge.ts", "node_modules/rxjs/src/internal/observable/never.ts", "node_modules/rxjs/src/internal/util/argsOrArgArray.ts", "node_modules/rxjs/src/internal/operators/filter.ts", "node_modules/rxjs/src/internal/observable/zip.ts", "node_modules/rxjs/src/internal/operators/audit.ts", "node_modules/rxjs/src/internal/operators/auditTime.ts", "node_modules/rxjs/src/internal/operators/bufferCount.ts", "node_modules/rxjs/src/internal/operators/catchError.ts", "node_modules/rxjs/src/internal/operators/scanInternals.ts", "node_modules/rxjs/src/internal/operators/combineLatest.ts", "node_modules/rxjs/src/internal/operators/combineLatestWith.ts", "node_modules/rxjs/src/internal/operators/debounceTime.ts", "node_modules/rxjs/src/internal/operators/defaultIfEmpty.ts", "node_modules/rxjs/src/internal/operators/take.ts", "node_modules/rxjs/src/internal/operators/ignoreElements.ts", "node_modules/rxjs/src/internal/operators/mapTo.ts", "node_modules/rxjs/src/internal/operators/delayWhen.ts", "node_modules/rxjs/src/internal/operators/delay.ts", "node_modules/rxjs/src/internal/operators/distinctUntilChanged.ts", "node_modules/rxjs/src/internal/operators/distinctUntilKeyChanged.ts", "node_modules/rxjs/src/internal/operators/throwIfEmpty.ts", "node_modules/rxjs/src/internal/operators/endWith.ts", "node_modules/rxjs/src/internal/operators/finalize.ts", "node_modules/rxjs/src/internal/operators/first.ts", "node_modules/rxjs/src/internal/operators/takeLast.ts", "node_modules/rxjs/src/internal/operators/merge.ts", "node_modules/rxjs/src/internal/operators/mergeWith.ts", "node_modules/rxjs/src/internal/operators/repeat.ts", "node_modules/rxjs/src/internal/operators/scan.ts", "node_modules/rxjs/src/internal/operators/share.ts", "node_modules/rxjs/src/internal/operators/shareReplay.ts", "node_modules/rxjs/src/internal/operators/skip.ts", "node_modules/rxjs/src/internal/operators/skipUntil.ts", "node_modules/rxjs/src/internal/operators/startWith.ts", "node_modules/rxjs/src/internal/operators/switchMap.ts", "node_modules/rxjs/src/internal/operators/takeUntil.ts", "node_modules/rxjs/src/internal/operators/takeWhile.ts", "node_modules/rxjs/src/internal/operators/tap.ts", "node_modules/rxjs/src/internal/operators/throttle.ts", "node_modules/rxjs/src/internal/operators/throttleTime.ts", "node_modules/rxjs/src/internal/operators/withLatestFrom.ts", "node_modules/rxjs/src/internal/operators/zip.ts", "node_modules/rxjs/src/internal/operators/zipWith.ts", "src/templates/assets/javascripts/browser/document/index.ts", "src/templates/assets/javascripts/browser/element/_/index.ts", "src/templates/assets/javascripts/browser/element/focus/index.ts", "src/templates/assets/javascripts/browser/element/hover/index.ts", "src/templates/assets/javascripts/browser/element/offset/_/index.ts", "src/templates/assets/javascripts/browser/element/offset/content/index.ts", "src/templates/assets/javascripts/utilities/h/index.ts", "src/templates/assets/javascripts/utilities/round/index.ts", "src/templates/assets/javascripts/browser/script/index.ts", "src/templates/assets/javascripts/browser/element/size/_/index.ts", "src/templates/assets/javascripts/browser/element/size/content/index.ts", "src/templates/assets/javascripts/browser/element/visibility/index.ts", "src/templates/assets/javascripts/browser/toggle/index.ts", "src/templates/assets/javascripts/browser/keyboard/index.ts", "src/templates/assets/javascripts/browser/location/_/index.ts", "src/templates/assets/javascripts/browser/location/hash/index.ts", "src/templates/assets/javascripts/browser/media/index.ts", "src/templates/assets/javascripts/browser/request/index.ts", "src/templates/assets/javascripts/browser/viewport/offset/index.ts", "src/templates/assets/javascripts/browser/viewport/size/index.ts", "src/templates/assets/javascripts/browser/viewport/_/index.ts", "src/templates/assets/javascripts/browser/viewport/at/index.ts", "src/templates/assets/javascripts/browser/worker/index.ts", "src/templates/assets/javascripts/_/index.ts", "src/templates/assets/javascripts/components/_/index.ts", "src/templates/assets/javascripts/components/announce/index.ts", "src/templates/assets/javascripts/components/consent/index.ts", "src/templates/assets/javascripts/templates/tooltip/index.tsx", "src/templates/assets/javascripts/templates/annotation/index.tsx", "src/templates/assets/javascripts/templates/clipboard/index.tsx", "src/templates/assets/javascripts/templates/search/index.tsx", "src/templates/assets/javascripts/templates/source/index.tsx", "src/templates/assets/javascripts/templates/tabbed/index.tsx", "src/templates/assets/javascripts/templates/table/index.tsx", "src/templates/assets/javascripts/templates/version/index.tsx", "src/templates/assets/javascripts/components/tooltip/index.ts", "src/templates/assets/javascripts/components/content/annotation/_/index.ts", "src/templates/assets/javascripts/components/content/annotation/list/index.ts", "src/templates/assets/javascripts/components/content/annotation/block/index.ts", "src/templates/assets/javascripts/components/content/code/_/index.ts", "src/templates/assets/javascripts/components/content/details/index.ts", "src/templates/assets/javascripts/components/content/mermaid/index.css", "src/templates/assets/javascripts/components/content/mermaid/index.ts", "src/templates/assets/javascripts/components/content/table/index.ts", "src/templates/assets/javascripts/components/content/tabs/index.ts", "src/templates/assets/javascripts/components/content/_/index.ts", "src/templates/assets/javascripts/components/dialog/index.ts", "src/templates/assets/javascripts/components/header/_/index.ts", "src/templates/assets/javascripts/components/header/title/index.ts", "src/templates/assets/javascripts/components/main/index.ts", "src/templates/assets/javascripts/components/palette/index.ts", "src/templates/assets/javascripts/components/progress/index.ts", "src/templates/assets/javascripts/integrations/clipboard/index.ts", "src/templates/assets/javascripts/integrations/sitemap/index.ts", "src/templates/assets/javascripts/integrations/instant/index.ts", "src/templates/assets/javascripts/integrations/search/highlighter/index.ts", "src/templates/assets/javascripts/integrations/search/worker/message/index.ts", "src/templates/assets/javascripts/integrations/search/worker/_/index.ts", "src/templates/assets/javascripts/integrations/version/index.ts", "src/templates/assets/javascripts/components/search/query/index.ts", "src/templates/assets/javascripts/components/search/result/index.ts", "src/templates/assets/javascripts/components/search/share/index.ts", "src/templates/assets/javascripts/components/search/suggest/index.ts", "src/templates/assets/javascripts/components/search/_/index.ts", "src/templates/assets/javascripts/components/search/highlight/index.ts", "src/templates/assets/javascripts/components/sidebar/index.ts", "src/templates/assets/javascripts/components/source/facts/github/index.ts", "src/templates/assets/javascripts/components/source/facts/gitlab/index.ts", "src/templates/assets/javascripts/components/source/facts/_/index.ts", "src/templates/assets/javascripts/components/source/_/index.ts", "src/templates/assets/javascripts/components/tabs/index.ts", "src/templates/assets/javascripts/components/toc/index.ts", "src/templates/assets/javascripts/components/top/index.ts", "src/templates/assets/javascripts/patches/ellipsis/index.ts", "src/templates/assets/javascripts/patches/indeterminate/index.ts", "src/templates/assets/javascripts/patches/scrollfix/index.ts", "src/templates/assets/javascripts/patches/scrolllock/index.ts", "src/templates/assets/javascripts/polyfills/index.ts"], + "sourcesContent": ["(function (global, factory) {\n typeof exports === 'object' && typeof module !== 'undefined' ? factory() :\n typeof define === 'function' && define.amd ? define(factory) :\n (factory());\n}(this, (function () { 'use strict';\n\n /**\n * Applies the :focus-visible polyfill at the given scope.\n * A scope in this case is either the top-level Document or a Shadow Root.\n *\n * @param {(Document|ShadowRoot)} scope\n * @see https://github.com/WICG/focus-visible\n */\n function applyFocusVisiblePolyfill(scope) {\n var hadKeyboardEvent = true;\n var hadFocusVisibleRecently = false;\n var hadFocusVisibleRecentlyTimeout = null;\n\n var inputTypesAllowlist = {\n text: true,\n search: true,\n url: true,\n tel: true,\n email: true,\n password: true,\n number: true,\n date: true,\n month: true,\n week: true,\n time: true,\n datetime: true,\n 'datetime-local': true\n };\n\n /**\n * Helper function for legacy browsers and iframes which sometimes focus\n * elements like document, body, and non-interactive SVG.\n * @param {Element} el\n */\n function isValidFocusTarget(el) {\n if (\n el &&\n el !== document &&\n el.nodeName !== 'HTML' &&\n el.nodeName !== 'BODY' &&\n 'classList' in el &&\n 'contains' in el.classList\n ) {\n return true;\n }\n return false;\n }\n\n /**\n * Computes whether the given element should automatically trigger the\n * `focus-visible` class being added, i.e. whether it should always match\n * `:focus-visible` when focused.\n * @param {Element} el\n * @return {boolean}\n */\n function focusTriggersKeyboardModality(el) {\n var type = el.type;\n var tagName = el.tagName;\n\n if (tagName === 'INPUT' && inputTypesAllowlist[type] && !el.readOnly) {\n return true;\n }\n\n if (tagName === 'TEXTAREA' && !el.readOnly) {\n return true;\n }\n\n if (el.isContentEditable) {\n return true;\n }\n\n return false;\n }\n\n /**\n * Add the `focus-visible` class to the given element if it was not added by\n * the author.\n * @param {Element} el\n */\n function addFocusVisibleClass(el) {\n if (el.classList.contains('focus-visible')) {\n return;\n }\n el.classList.add('focus-visible');\n el.setAttribute('data-focus-visible-added', '');\n }\n\n /**\n * Remove the `focus-visible` class from the given element if it was not\n * originally added by the author.\n * @param {Element} el\n */\n function removeFocusVisibleClass(el) {\n if (!el.hasAttribute('data-focus-visible-added')) {\n return;\n }\n el.classList.remove('focus-visible');\n el.removeAttribute('data-focus-visible-added');\n }\n\n /**\n * If the most recent user interaction was via the keyboard;\n * and the key press did not include a meta, alt/option, or control key;\n * then the modality is keyboard. Otherwise, the modality is not keyboard.\n * Apply `focus-visible` to any current active element and keep track\n * of our keyboard modality state with `hadKeyboardEvent`.\n * @param {KeyboardEvent} e\n */\n function onKeyDown(e) {\n if (e.metaKey || e.altKey || e.ctrlKey) {\n return;\n }\n\n if (isValidFocusTarget(scope.activeElement)) {\n addFocusVisibleClass(scope.activeElement);\n }\n\n hadKeyboardEvent = true;\n }\n\n /**\n * If at any point a user clicks with a pointing device, ensure that we change\n * the modality away from keyboard.\n * This avoids the situation where a user presses a key on an already focused\n * element, and then clicks on a different element, focusing it with a\n * pointing device, while we still think we're in keyboard modality.\n * @param {Event} e\n */\n function onPointerDown(e) {\n hadKeyboardEvent = false;\n }\n\n /**\n * On `focus`, add the `focus-visible` class to the target if:\n * - the target received focus as a result of keyboard navigation, or\n * - the event target is an element that will likely require interaction\n * via the keyboard (e.g. a text box)\n * @param {Event} e\n */\n function onFocus(e) {\n // Prevent IE from focusing the document or HTML element.\n if (!isValidFocusTarget(e.target)) {\n return;\n }\n\n if (hadKeyboardEvent || focusTriggersKeyboardModality(e.target)) {\n addFocusVisibleClass(e.target);\n }\n }\n\n /**\n * On `blur`, remove the `focus-visible` class from the target.\n * @param {Event} e\n */\n function onBlur(e) {\n if (!isValidFocusTarget(e.target)) {\n return;\n }\n\n if (\n e.target.classList.contains('focus-visible') ||\n e.target.hasAttribute('data-focus-visible-added')\n ) {\n // To detect a tab/window switch, we look for a blur event followed\n // rapidly by a visibility change.\n // If we don't see a visibility change within 100ms, it's probably a\n // regular focus change.\n hadFocusVisibleRecently = true;\n window.clearTimeout(hadFocusVisibleRecentlyTimeout);\n hadFocusVisibleRecentlyTimeout = window.setTimeout(function() {\n hadFocusVisibleRecently = false;\n }, 100);\n removeFocusVisibleClass(e.target);\n }\n }\n\n /**\n * If the user changes tabs, keep track of whether or not the previously\n * focused element had .focus-visible.\n * @param {Event} e\n */\n function onVisibilityChange(e) {\n if (document.visibilityState === 'hidden') {\n // If the tab becomes active again, the browser will handle calling focus\n // on the element (Safari actually calls it twice).\n // If this tab change caused a blur on an element with focus-visible,\n // re-apply the class when the user switches back to the tab.\n if (hadFocusVisibleRecently) {\n hadKeyboardEvent = true;\n }\n addInitialPointerMoveListeners();\n }\n }\n\n /**\n * Add a group of listeners to detect usage of any pointing devices.\n * These listeners will be added when the polyfill first loads, and anytime\n * the window is blurred, so that they are active when the window regains\n * focus.\n */\n function addInitialPointerMoveListeners() {\n document.addEventListener('mousemove', onInitialPointerMove);\n document.addEventListener('mousedown', onInitialPointerMove);\n document.addEventListener('mouseup', onInitialPointerMove);\n document.addEventListener('pointermove', onInitialPointerMove);\n document.addEventListener('pointerdown', onInitialPointerMove);\n document.addEventListener('pointerup', onInitialPointerMove);\n document.addEventListener('touchmove', onInitialPointerMove);\n document.addEventListener('touchstart', onInitialPointerMove);\n document.addEventListener('touchend', onInitialPointerMove);\n }\n\n function removeInitialPointerMoveListeners() {\n document.removeEventListener('mousemove', onInitialPointerMove);\n document.removeEventListener('mousedown', onInitialPointerMove);\n document.removeEventListener('mouseup', onInitialPointerMove);\n document.removeEventListener('pointermove', onInitialPointerMove);\n document.removeEventListener('pointerdown', onInitialPointerMove);\n document.removeEventListener('pointerup', onInitialPointerMove);\n document.removeEventListener('touchmove', onInitialPointerMove);\n document.removeEventListener('touchstart', onInitialPointerMove);\n document.removeEventListener('touchend', onInitialPointerMove);\n }\n\n /**\n * When the polfyill first loads, assume the user is in keyboard modality.\n * If any event is received from a pointing device (e.g. mouse, pointer,\n * touch), turn off keyboard modality.\n * This accounts for situations where focus enters the page from the URL bar.\n * @param {Event} e\n */\n function onInitialPointerMove(e) {\n // Work around a Safari quirk that fires a mousemove on whenever the\n // window blurs, even if you're tabbing out of the page. \u00AF\\_(\u30C4)_/\u00AF\n if (e.target.nodeName && e.target.nodeName.toLowerCase() === 'html') {\n return;\n }\n\n hadKeyboardEvent = false;\n removeInitialPointerMoveListeners();\n }\n\n // For some kinds of state, we are interested in changes at the global scope\n // only. For example, global pointer input, global key presses and global\n // visibility change should affect the state at every scope:\n document.addEventListener('keydown', onKeyDown, true);\n document.addEventListener('mousedown', onPointerDown, true);\n document.addEventListener('pointerdown', onPointerDown, true);\n document.addEventListener('touchstart', onPointerDown, true);\n document.addEventListener('visibilitychange', onVisibilityChange, true);\n\n addInitialPointerMoveListeners();\n\n // For focus and blur, we specifically care about state changes in the local\n // scope. This is because focus / blur events that originate from within a\n // shadow root are not re-dispatched from the host element if it was already\n // the active element in its own scope:\n scope.addEventListener('focus', onFocus, true);\n scope.addEventListener('blur', onBlur, true);\n\n // We detect that a node is a ShadowRoot by ensuring that it is a\n // DocumentFragment and also has a host property. This check covers native\n // implementation and polyfill implementation transparently. If we only cared\n // about the native implementation, we could just check if the scope was\n // an instance of a ShadowRoot.\n if (scope.nodeType === Node.DOCUMENT_FRAGMENT_NODE && scope.host) {\n // Since a ShadowRoot is a special kind of DocumentFragment, it does not\n // have a root element to add a class to. So, we add this attribute to the\n // host element instead:\n scope.host.setAttribute('data-js-focus-visible', '');\n } else if (scope.nodeType === Node.DOCUMENT_NODE) {\n document.documentElement.classList.add('js-focus-visible');\n document.documentElement.setAttribute('data-js-focus-visible', '');\n }\n }\n\n // It is important to wrap all references to global window and document in\n // these checks to support server-side rendering use cases\n // @see https://github.com/WICG/focus-visible/issues/199\n if (typeof window !== 'undefined' && typeof document !== 'undefined') {\n // Make the polyfill helper globally available. This can be used as a signal\n // to interested libraries that wish to coordinate with the polyfill for e.g.,\n // applying the polyfill to a shadow root:\n window.applyFocusVisiblePolyfill = applyFocusVisiblePolyfill;\n\n // Notify interested libraries of the polyfill's presence, in case the\n // polyfill was loaded lazily:\n var event;\n\n try {\n event = new CustomEvent('focus-visible-polyfill-ready');\n } catch (error) {\n // IE11 does not support using CustomEvent as a constructor directly:\n event = document.createEvent('CustomEvent');\n event.initCustomEvent('focus-visible-polyfill-ready', false, false, {});\n }\n\n window.dispatchEvent(event);\n }\n\n if (typeof document !== 'undefined') {\n // Apply the polyfill to the global document, so that no JavaScript\n // coordination is required to use the polyfill in the top-level document:\n applyFocusVisiblePolyfill(document);\n }\n\n})));\n", "/*!\n * clipboard.js v2.0.11\n * https://clipboardjs.com/\n *\n * Licensed MIT \u00A9 Zeno Rocha\n */\n(function webpackUniversalModuleDefinition(root, factory) {\n\tif(typeof exports === 'object' && typeof module === 'object')\n\t\tmodule.exports = factory();\n\telse if(typeof define === 'function' && define.amd)\n\t\tdefine([], factory);\n\telse if(typeof exports === 'object')\n\t\texports[\"ClipboardJS\"] = factory();\n\telse\n\t\troot[\"ClipboardJS\"] = factory();\n})(this, function() {\nreturn /******/ (function() { // webpackBootstrap\n/******/ \tvar __webpack_modules__ = ({\n\n/***/ 686:\n/***/ (function(__unused_webpack_module, __webpack_exports__, __webpack_require__) {\n\n\"use strict\";\n\n// EXPORTS\n__webpack_require__.d(__webpack_exports__, {\n \"default\": function() { return /* binding */ clipboard; }\n});\n\n// EXTERNAL MODULE: ./node_modules/tiny-emitter/index.js\nvar tiny_emitter = __webpack_require__(279);\nvar tiny_emitter_default = /*#__PURE__*/__webpack_require__.n(tiny_emitter);\n// EXTERNAL MODULE: ./node_modules/good-listener/src/listen.js\nvar listen = __webpack_require__(370);\nvar listen_default = /*#__PURE__*/__webpack_require__.n(listen);\n// EXTERNAL MODULE: ./node_modules/select/src/select.js\nvar src_select = __webpack_require__(817);\nvar select_default = /*#__PURE__*/__webpack_require__.n(src_select);\n;// CONCATENATED MODULE: ./src/common/command.js\n/**\n * Executes a given operation type.\n * @param {String} type\n * @return {Boolean}\n */\nfunction command(type) {\n try {\n return document.execCommand(type);\n } catch (err) {\n return false;\n }\n}\n;// CONCATENATED MODULE: ./src/actions/cut.js\n\n\n/**\n * Cut action wrapper.\n * @param {String|HTMLElement} target\n * @return {String}\n */\n\nvar ClipboardActionCut = function ClipboardActionCut(target) {\n var selectedText = select_default()(target);\n command('cut');\n return selectedText;\n};\n\n/* harmony default export */ var actions_cut = (ClipboardActionCut);\n;// CONCATENATED MODULE: ./src/common/create-fake-element.js\n/**\n * Creates a fake textarea element with a value.\n * @param {String} value\n * @return {HTMLElement}\n */\nfunction createFakeElement(value) {\n var isRTL = document.documentElement.getAttribute('dir') === 'rtl';\n var fakeElement = document.createElement('textarea'); // Prevent zooming on iOS\n\n fakeElement.style.fontSize = '12pt'; // Reset box model\n\n fakeElement.style.border = '0';\n fakeElement.style.padding = '0';\n fakeElement.style.margin = '0'; // Move element out of screen horizontally\n\n fakeElement.style.position = 'absolute';\n fakeElement.style[isRTL ? 'right' : 'left'] = '-9999px'; // Move element to the same position vertically\n\n var yPosition = window.pageYOffset || document.documentElement.scrollTop;\n fakeElement.style.top = \"\".concat(yPosition, \"px\");\n fakeElement.setAttribute('readonly', '');\n fakeElement.value = value;\n return fakeElement;\n}\n;// CONCATENATED MODULE: ./src/actions/copy.js\n\n\n\n/**\n * Create fake copy action wrapper using a fake element.\n * @param {String} target\n * @param {Object} options\n * @return {String}\n */\n\nvar fakeCopyAction = function fakeCopyAction(value, options) {\n var fakeElement = createFakeElement(value);\n options.container.appendChild(fakeElement);\n var selectedText = select_default()(fakeElement);\n command('copy');\n fakeElement.remove();\n return selectedText;\n};\n/**\n * Copy action wrapper.\n * @param {String|HTMLElement} target\n * @param {Object} options\n * @return {String}\n */\n\n\nvar ClipboardActionCopy = function ClipboardActionCopy(target) {\n var options = arguments.length > 1 && arguments[1] !== undefined ? arguments[1] : {\n container: document.body\n };\n var selectedText = '';\n\n if (typeof target === 'string') {\n selectedText = fakeCopyAction(target, options);\n } else if (target instanceof HTMLInputElement && !['text', 'search', 'url', 'tel', 'password'].includes(target === null || target === void 0 ? void 0 : target.type)) {\n // If input type doesn't support `setSelectionRange`. Simulate it. https://developer.mozilla.org/en-US/docs/Web/API/HTMLInputElement/setSelectionRange\n selectedText = fakeCopyAction(target.value, options);\n } else {\n selectedText = select_default()(target);\n command('copy');\n }\n\n return selectedText;\n};\n\n/* harmony default export */ var actions_copy = (ClipboardActionCopy);\n;// CONCATENATED MODULE: ./src/actions/default.js\nfunction _typeof(obj) { \"@babel/helpers - typeof\"; if (typeof Symbol === \"function\" && typeof Symbol.iterator === \"symbol\") { _typeof = function _typeof(obj) { return typeof obj; }; } else { _typeof = function _typeof(obj) { return obj && typeof Symbol === \"function\" && obj.constructor === Symbol && obj !== Symbol.prototype ? \"symbol\" : typeof obj; }; } return _typeof(obj); }\n\n\n\n/**\n * Inner function which performs selection from either `text` or `target`\n * properties and then executes copy or cut operations.\n * @param {Object} options\n */\n\nvar ClipboardActionDefault = function ClipboardActionDefault() {\n var options = arguments.length > 0 && arguments[0] !== undefined ? arguments[0] : {};\n // Defines base properties passed from constructor.\n var _options$action = options.action,\n action = _options$action === void 0 ? 'copy' : _options$action,\n container = options.container,\n target = options.target,\n text = options.text; // Sets the `action` to be performed which can be either 'copy' or 'cut'.\n\n if (action !== 'copy' && action !== 'cut') {\n throw new Error('Invalid \"action\" value, use either \"copy\" or \"cut\"');\n } // Sets the `target` property using an element that will be have its content copied.\n\n\n if (target !== undefined) {\n if (target && _typeof(target) === 'object' && target.nodeType === 1) {\n if (action === 'copy' && target.hasAttribute('disabled')) {\n throw new Error('Invalid \"target\" attribute. Please use \"readonly\" instead of \"disabled\" attribute');\n }\n\n if (action === 'cut' && (target.hasAttribute('readonly') || target.hasAttribute('disabled'))) {\n throw new Error('Invalid \"target\" attribute. You can\\'t cut text from elements with \"readonly\" or \"disabled\" attributes');\n }\n } else {\n throw new Error('Invalid \"target\" value, use a valid Element');\n }\n } // Define selection strategy based on `text` property.\n\n\n if (text) {\n return actions_copy(text, {\n container: container\n });\n } // Defines which selection strategy based on `target` property.\n\n\n if (target) {\n return action === 'cut' ? actions_cut(target) : actions_copy(target, {\n container: container\n });\n }\n};\n\n/* harmony default export */ var actions_default = (ClipboardActionDefault);\n;// CONCATENATED MODULE: ./src/clipboard.js\nfunction clipboard_typeof(obj) { \"@babel/helpers - typeof\"; if (typeof Symbol === \"function\" && typeof Symbol.iterator === \"symbol\") { clipboard_typeof = function _typeof(obj) { return typeof obj; }; } else { clipboard_typeof = function _typeof(obj) { return obj && typeof Symbol === \"function\" && obj.constructor === Symbol && obj !== Symbol.prototype ? \"symbol\" : typeof obj; }; } return clipboard_typeof(obj); }\n\nfunction _classCallCheck(instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError(\"Cannot call a class as a function\"); } }\n\nfunction _defineProperties(target, props) { for (var i = 0; i < props.length; i++) { var descriptor = props[i]; descriptor.enumerable = descriptor.enumerable || false; descriptor.configurable = true; if (\"value\" in descriptor) descriptor.writable = true; Object.defineProperty(target, descriptor.key, descriptor); } }\n\nfunction _createClass(Constructor, protoProps, staticProps) { if (protoProps) _defineProperties(Constructor.prototype, protoProps); if (staticProps) _defineProperties(Constructor, staticProps); return Constructor; }\n\nfunction _inherits(subClass, superClass) { if (typeof superClass !== \"function\" && superClass !== null) { throw new TypeError(\"Super expression must either be null or a function\"); } subClass.prototype = Object.create(superClass && superClass.prototype, { constructor: { value: subClass, writable: true, configurable: true } }); if (superClass) _setPrototypeOf(subClass, superClass); }\n\nfunction _setPrototypeOf(o, p) { _setPrototypeOf = Object.setPrototypeOf || function _setPrototypeOf(o, p) { o.__proto__ = p; return o; }; return _setPrototypeOf(o, p); }\n\nfunction _createSuper(Derived) { var hasNativeReflectConstruct = _isNativeReflectConstruct(); return function _createSuperInternal() { var Super = _getPrototypeOf(Derived), result; if (hasNativeReflectConstruct) { var NewTarget = _getPrototypeOf(this).constructor; result = Reflect.construct(Super, arguments, NewTarget); } else { result = Super.apply(this, arguments); } return _possibleConstructorReturn(this, result); }; }\n\nfunction _possibleConstructorReturn(self, call) { if (call && (clipboard_typeof(call) === \"object\" || typeof call === \"function\")) { return call; } return _assertThisInitialized(self); }\n\nfunction _assertThisInitialized(self) { if (self === void 0) { throw new ReferenceError(\"this hasn't been initialised - super() hasn't been called\"); } return self; }\n\nfunction _isNativeReflectConstruct() { if (typeof Reflect === \"undefined\" || !Reflect.construct) return false; if (Reflect.construct.sham) return false; if (typeof Proxy === \"function\") return true; try { Date.prototype.toString.call(Reflect.construct(Date, [], function () {})); return true; } catch (e) { return false; } }\n\nfunction _getPrototypeOf(o) { _getPrototypeOf = Object.setPrototypeOf ? Object.getPrototypeOf : function _getPrototypeOf(o) { return o.__proto__ || Object.getPrototypeOf(o); }; return _getPrototypeOf(o); }\n\n\n\n\n\n\n/**\n * Helper function to retrieve attribute value.\n * @param {String} suffix\n * @param {Element} element\n */\n\nfunction getAttributeValue(suffix, element) {\n var attribute = \"data-clipboard-\".concat(suffix);\n\n if (!element.hasAttribute(attribute)) {\n return;\n }\n\n return element.getAttribute(attribute);\n}\n/**\n * Base class which takes one or more elements, adds event listeners to them,\n * and instantiates a new `ClipboardAction` on each click.\n */\n\n\nvar Clipboard = /*#__PURE__*/function (_Emitter) {\n _inherits(Clipboard, _Emitter);\n\n var _super = _createSuper(Clipboard);\n\n /**\n * @param {String|HTMLElement|HTMLCollection|NodeList} trigger\n * @param {Object} options\n */\n function Clipboard(trigger, options) {\n var _this;\n\n _classCallCheck(this, Clipboard);\n\n _this = _super.call(this);\n\n _this.resolveOptions(options);\n\n _this.listenClick(trigger);\n\n return _this;\n }\n /**\n * Defines if attributes would be resolved using internal setter functions\n * or custom functions that were passed in the constructor.\n * @param {Object} options\n */\n\n\n _createClass(Clipboard, [{\n key: \"resolveOptions\",\n value: function resolveOptions() {\n var options = arguments.length > 0 && arguments[0] !== undefined ? arguments[0] : {};\n this.action = typeof options.action === 'function' ? options.action : this.defaultAction;\n this.target = typeof options.target === 'function' ? options.target : this.defaultTarget;\n this.text = typeof options.text === 'function' ? options.text : this.defaultText;\n this.container = clipboard_typeof(options.container) === 'object' ? options.container : document.body;\n }\n /**\n * Adds a click event listener to the passed trigger.\n * @param {String|HTMLElement|HTMLCollection|NodeList} trigger\n */\n\n }, {\n key: \"listenClick\",\n value: function listenClick(trigger) {\n var _this2 = this;\n\n this.listener = listen_default()(trigger, 'click', function (e) {\n return _this2.onClick(e);\n });\n }\n /**\n * Defines a new `ClipboardAction` on each click event.\n * @param {Event} e\n */\n\n }, {\n key: \"onClick\",\n value: function onClick(e) {\n var trigger = e.delegateTarget || e.currentTarget;\n var action = this.action(trigger) || 'copy';\n var text = actions_default({\n action: action,\n container: this.container,\n target: this.target(trigger),\n text: this.text(trigger)\n }); // Fires an event based on the copy operation result.\n\n this.emit(text ? 'success' : 'error', {\n action: action,\n text: text,\n trigger: trigger,\n clearSelection: function clearSelection() {\n if (trigger) {\n trigger.focus();\n }\n\n window.getSelection().removeAllRanges();\n }\n });\n }\n /**\n * Default `action` lookup function.\n * @param {Element} trigger\n */\n\n }, {\n key: \"defaultAction\",\n value: function defaultAction(trigger) {\n return getAttributeValue('action', trigger);\n }\n /**\n * Default `target` lookup function.\n * @param {Element} trigger\n */\n\n }, {\n key: \"defaultTarget\",\n value: function defaultTarget(trigger) {\n var selector = getAttributeValue('target', trigger);\n\n if (selector) {\n return document.querySelector(selector);\n }\n }\n /**\n * Allow fire programmatically a copy action\n * @param {String|HTMLElement} target\n * @param {Object} options\n * @returns Text copied.\n */\n\n }, {\n key: \"defaultText\",\n\n /**\n * Default `text` lookup function.\n * @param {Element} trigger\n */\n value: function defaultText(trigger) {\n return getAttributeValue('text', trigger);\n }\n /**\n * Destroy lifecycle.\n */\n\n }, {\n key: \"destroy\",\n value: function destroy() {\n this.listener.destroy();\n }\n }], [{\n key: \"copy\",\n value: function copy(target) {\n var options = arguments.length > 1 && arguments[1] !== undefined ? arguments[1] : {\n container: document.body\n };\n return actions_copy(target, options);\n }\n /**\n * Allow fire programmatically a cut action\n * @param {String|HTMLElement} target\n * @returns Text cutted.\n */\n\n }, {\n key: \"cut\",\n value: function cut(target) {\n return actions_cut(target);\n }\n /**\n * Returns the support of the given action, or all actions if no action is\n * given.\n * @param {String} [action]\n */\n\n }, {\n key: \"isSupported\",\n value: function isSupported() {\n var action = arguments.length > 0 && arguments[0] !== undefined ? arguments[0] : ['copy', 'cut'];\n var actions = typeof action === 'string' ? [action] : action;\n var support = !!document.queryCommandSupported;\n actions.forEach(function (action) {\n support = support && !!document.queryCommandSupported(action);\n });\n return support;\n }\n }]);\n\n return Clipboard;\n}((tiny_emitter_default()));\n\n/* harmony default export */ var clipboard = (Clipboard);\n\n/***/ }),\n\n/***/ 828:\n/***/ (function(module) {\n\nvar DOCUMENT_NODE_TYPE = 9;\n\n/**\n * A polyfill for Element.matches()\n */\nif (typeof Element !== 'undefined' && !Element.prototype.matches) {\n var proto = Element.prototype;\n\n proto.matches = proto.matchesSelector ||\n proto.mozMatchesSelector ||\n proto.msMatchesSelector ||\n proto.oMatchesSelector ||\n proto.webkitMatchesSelector;\n}\n\n/**\n * Finds the closest parent that matches a selector.\n *\n * @param {Element} element\n * @param {String} selector\n * @return {Function}\n */\nfunction closest (element, selector) {\n while (element && element.nodeType !== DOCUMENT_NODE_TYPE) {\n if (typeof element.matches === 'function' &&\n element.matches(selector)) {\n return element;\n }\n element = element.parentNode;\n }\n}\n\nmodule.exports = closest;\n\n\n/***/ }),\n\n/***/ 438:\n/***/ (function(module, __unused_webpack_exports, __webpack_require__) {\n\nvar closest = __webpack_require__(828);\n\n/**\n * Delegates event to a selector.\n *\n * @param {Element} element\n * @param {String} selector\n * @param {String} type\n * @param {Function} callback\n * @param {Boolean} useCapture\n * @return {Object}\n */\nfunction _delegate(element, selector, type, callback, useCapture) {\n var listenerFn = listener.apply(this, arguments);\n\n element.addEventListener(type, listenerFn, useCapture);\n\n return {\n destroy: function() {\n element.removeEventListener(type, listenerFn, useCapture);\n }\n }\n}\n\n/**\n * Delegates event to a selector.\n *\n * @param {Element|String|Array} [elements]\n * @param {String} selector\n * @param {String} type\n * @param {Function} callback\n * @param {Boolean} useCapture\n * @return {Object}\n */\nfunction delegate(elements, selector, type, callback, useCapture) {\n // Handle the regular Element usage\n if (typeof elements.addEventListener === 'function') {\n return _delegate.apply(null, arguments);\n }\n\n // Handle Element-less usage, it defaults to global delegation\n if (typeof type === 'function') {\n // Use `document` as the first parameter, then apply arguments\n // This is a short way to .unshift `arguments` without running into deoptimizations\n return _delegate.bind(null, document).apply(null, arguments);\n }\n\n // Handle Selector-based usage\n if (typeof elements === 'string') {\n elements = document.querySelectorAll(elements);\n }\n\n // Handle Array-like based usage\n return Array.prototype.map.call(elements, function (element) {\n return _delegate(element, selector, type, callback, useCapture);\n });\n}\n\n/**\n * Finds closest match and invokes callback.\n *\n * @param {Element} element\n * @param {String} selector\n * @param {String} type\n * @param {Function} callback\n * @return {Function}\n */\nfunction listener(element, selector, type, callback) {\n return function(e) {\n e.delegateTarget = closest(e.target, selector);\n\n if (e.delegateTarget) {\n callback.call(element, e);\n }\n }\n}\n\nmodule.exports = delegate;\n\n\n/***/ }),\n\n/***/ 879:\n/***/ (function(__unused_webpack_module, exports) {\n\n/**\n * Check if argument is a HTML element.\n *\n * @param {Object} value\n * @return {Boolean}\n */\nexports.node = function(value) {\n return value !== undefined\n && value instanceof HTMLElement\n && value.nodeType === 1;\n};\n\n/**\n * Check if argument is a list of HTML elements.\n *\n * @param {Object} value\n * @return {Boolean}\n */\nexports.nodeList = function(value) {\n var type = Object.prototype.toString.call(value);\n\n return value !== undefined\n && (type === '[object NodeList]' || type === '[object HTMLCollection]')\n && ('length' in value)\n && (value.length === 0 || exports.node(value[0]));\n};\n\n/**\n * Check if argument is a string.\n *\n * @param {Object} value\n * @return {Boolean}\n */\nexports.string = function(value) {\n return typeof value === 'string'\n || value instanceof String;\n};\n\n/**\n * Check if argument is a function.\n *\n * @param {Object} value\n * @return {Boolean}\n */\nexports.fn = function(value) {\n var type = Object.prototype.toString.call(value);\n\n return type === '[object Function]';\n};\n\n\n/***/ }),\n\n/***/ 370:\n/***/ (function(module, __unused_webpack_exports, __webpack_require__) {\n\nvar is = __webpack_require__(879);\nvar delegate = __webpack_require__(438);\n\n/**\n * Validates all params and calls the right\n * listener function based on its target type.\n *\n * @param {String|HTMLElement|HTMLCollection|NodeList} target\n * @param {String} type\n * @param {Function} callback\n * @return {Object}\n */\nfunction listen(target, type, callback) {\n if (!target && !type && !callback) {\n throw new Error('Missing required arguments');\n }\n\n if (!is.string(type)) {\n throw new TypeError('Second argument must be a String');\n }\n\n if (!is.fn(callback)) {\n throw new TypeError('Third argument must be a Function');\n }\n\n if (is.node(target)) {\n return listenNode(target, type, callback);\n }\n else if (is.nodeList(target)) {\n return listenNodeList(target, type, callback);\n }\n else if (is.string(target)) {\n return listenSelector(target, type, callback);\n }\n else {\n throw new TypeError('First argument must be a String, HTMLElement, HTMLCollection, or NodeList');\n }\n}\n\n/**\n * Adds an event listener to a HTML element\n * and returns a remove listener function.\n *\n * @param {HTMLElement} node\n * @param {String} type\n * @param {Function} callback\n * @return {Object}\n */\nfunction listenNode(node, type, callback) {\n node.addEventListener(type, callback);\n\n return {\n destroy: function() {\n node.removeEventListener(type, callback);\n }\n }\n}\n\n/**\n * Add an event listener to a list of HTML elements\n * and returns a remove listener function.\n *\n * @param {NodeList|HTMLCollection} nodeList\n * @param {String} type\n * @param {Function} callback\n * @return {Object}\n */\nfunction listenNodeList(nodeList, type, callback) {\n Array.prototype.forEach.call(nodeList, function(node) {\n node.addEventListener(type, callback);\n });\n\n return {\n destroy: function() {\n Array.prototype.forEach.call(nodeList, function(node) {\n node.removeEventListener(type, callback);\n });\n }\n }\n}\n\n/**\n * Add an event listener to a selector\n * and returns a remove listener function.\n *\n * @param {String} selector\n * @param {String} type\n * @param {Function} callback\n * @return {Object}\n */\nfunction listenSelector(selector, type, callback) {\n return delegate(document.body, selector, type, callback);\n}\n\nmodule.exports = listen;\n\n\n/***/ }),\n\n/***/ 817:\n/***/ (function(module) {\n\nfunction select(element) {\n var selectedText;\n\n if (element.nodeName === 'SELECT') {\n element.focus();\n\n selectedText = element.value;\n }\n else if (element.nodeName === 'INPUT' || element.nodeName === 'TEXTAREA') {\n var isReadOnly = element.hasAttribute('readonly');\n\n if (!isReadOnly) {\n element.setAttribute('readonly', '');\n }\n\n element.select();\n element.setSelectionRange(0, element.value.length);\n\n if (!isReadOnly) {\n element.removeAttribute('readonly');\n }\n\n selectedText = element.value;\n }\n else {\n if (element.hasAttribute('contenteditable')) {\n element.focus();\n }\n\n var selection = window.getSelection();\n var range = document.createRange();\n\n range.selectNodeContents(element);\n selection.removeAllRanges();\n selection.addRange(range);\n\n selectedText = selection.toString();\n }\n\n return selectedText;\n}\n\nmodule.exports = select;\n\n\n/***/ }),\n\n/***/ 279:\n/***/ (function(module) {\n\nfunction E () {\n // Keep this empty so it's easier to inherit from\n // (via https://github.com/lipsmack from https://github.com/scottcorgan/tiny-emitter/issues/3)\n}\n\nE.prototype = {\n on: function (name, callback, ctx) {\n var e = this.e || (this.e = {});\n\n (e[name] || (e[name] = [])).push({\n fn: callback,\n ctx: ctx\n });\n\n return this;\n },\n\n once: function (name, callback, ctx) {\n var self = this;\n function listener () {\n self.off(name, listener);\n callback.apply(ctx, arguments);\n };\n\n listener._ = callback\n return this.on(name, listener, ctx);\n },\n\n emit: function (name) {\n var data = [].slice.call(arguments, 1);\n var evtArr = ((this.e || (this.e = {}))[name] || []).slice();\n var i = 0;\n var len = evtArr.length;\n\n for (i; i < len; i++) {\n evtArr[i].fn.apply(evtArr[i].ctx, data);\n }\n\n return this;\n },\n\n off: function (name, callback) {\n var e = this.e || (this.e = {});\n var evts = e[name];\n var liveEvents = [];\n\n if (evts && callback) {\n for (var i = 0, len = evts.length; i < len; i++) {\n if (evts[i].fn !== callback && evts[i].fn._ !== callback)\n liveEvents.push(evts[i]);\n }\n }\n\n // Remove event from queue to prevent memory leak\n // Suggested by https://github.com/lazd\n // Ref: https://github.com/scottcorgan/tiny-emitter/commit/c6ebfaa9bc973b33d110a84a307742b7cf94c953#commitcomment-5024910\n\n (liveEvents.length)\n ? e[name] = liveEvents\n : delete e[name];\n\n return this;\n }\n};\n\nmodule.exports = E;\nmodule.exports.TinyEmitter = E;\n\n\n/***/ })\n\n/******/ \t});\n/************************************************************************/\n/******/ \t// The module cache\n/******/ \tvar __webpack_module_cache__ = {};\n/******/ \t\n/******/ \t// The require function\n/******/ \tfunction __webpack_require__(moduleId) {\n/******/ \t\t// Check if module is in cache\n/******/ \t\tif(__webpack_module_cache__[moduleId]) {\n/******/ \t\t\treturn __webpack_module_cache__[moduleId].exports;\n/******/ \t\t}\n/******/ \t\t// Create a new module (and put it into the cache)\n/******/ \t\tvar module = __webpack_module_cache__[moduleId] = {\n/******/ \t\t\t// no module.id needed\n/******/ \t\t\t// no module.loaded needed\n/******/ \t\t\texports: {}\n/******/ \t\t};\n/******/ \t\n/******/ \t\t// Execute the module function\n/******/ \t\t__webpack_modules__[moduleId](module, module.exports, __webpack_require__);\n/******/ \t\n/******/ \t\t// Return the exports of the module\n/******/ \t\treturn module.exports;\n/******/ \t}\n/******/ \t\n/************************************************************************/\n/******/ \t/* webpack/runtime/compat get default export */\n/******/ \t!function() {\n/******/ \t\t// getDefaultExport function for compatibility with non-harmony modules\n/******/ \t\t__webpack_require__.n = function(module) {\n/******/ \t\t\tvar getter = module && module.__esModule ?\n/******/ \t\t\t\tfunction() { return module['default']; } :\n/******/ \t\t\t\tfunction() { return module; };\n/******/ \t\t\t__webpack_require__.d(getter, { a: getter });\n/******/ \t\t\treturn getter;\n/******/ \t\t};\n/******/ \t}();\n/******/ \t\n/******/ \t/* webpack/runtime/define property getters */\n/******/ \t!function() {\n/******/ \t\t// define getter functions for harmony exports\n/******/ \t\t__webpack_require__.d = function(exports, definition) {\n/******/ \t\t\tfor(var key in definition) {\n/******/ \t\t\t\tif(__webpack_require__.o(definition, key) && !__webpack_require__.o(exports, key)) {\n/******/ \t\t\t\t\tObject.defineProperty(exports, key, { enumerable: true, get: definition[key] });\n/******/ \t\t\t\t}\n/******/ \t\t\t}\n/******/ \t\t};\n/******/ \t}();\n/******/ \t\n/******/ \t/* webpack/runtime/hasOwnProperty shorthand */\n/******/ \t!function() {\n/******/ \t\t__webpack_require__.o = function(obj, prop) { return Object.prototype.hasOwnProperty.call(obj, prop); }\n/******/ \t}();\n/******/ \t\n/************************************************************************/\n/******/ \t// module exports must be returned from runtime so entry inlining is disabled\n/******/ \t// startup\n/******/ \t// Load entry module and return exports\n/******/ \treturn __webpack_require__(686);\n/******/ })()\n.default;\n});", "/*!\n * escape-html\n * Copyright(c) 2012-2013 TJ Holowaychuk\n * Copyright(c) 2015 Andreas Lubbe\n * Copyright(c) 2015 Tiancheng \"Timothy\" Gu\n * MIT Licensed\n */\n\n'use strict';\n\n/**\n * Module variables.\n * @private\n */\n\nvar matchHtmlRegExp = /[\"'&<>]/;\n\n/**\n * Module exports.\n * @public\n */\n\nmodule.exports = escapeHtml;\n\n/**\n * Escape special characters in the given string of html.\n *\n * @param {string} string The string to escape for inserting into HTML\n * @return {string}\n * @public\n */\n\nfunction escapeHtml(string) {\n var str = '' + string;\n var match = matchHtmlRegExp.exec(str);\n\n if (!match) {\n return str;\n }\n\n var escape;\n var html = '';\n var index = 0;\n var lastIndex = 0;\n\n for (index = match.index; index < str.length; index++) {\n switch (str.charCodeAt(index)) {\n case 34: // \"\n escape = '"';\n break;\n case 38: // &\n escape = '&';\n break;\n case 39: // '\n escape = ''';\n break;\n case 60: // <\n escape = '<';\n break;\n case 62: // >\n escape = '>';\n break;\n default:\n continue;\n }\n\n if (lastIndex !== index) {\n html += str.substring(lastIndex, index);\n }\n\n lastIndex = index + 1;\n html += escape;\n }\n\n return lastIndex !== index\n ? html + str.substring(lastIndex, index)\n : html;\n}\n", "/*\n * Copyright (c) 2016-2024 Martin Donath \n *\n * Permission is hereby granted, free of charge, to any person obtaining a copy\n * of this software and associated documentation files (the \"Software\"), to\n * deal in the Software without restriction, including without limitation the\n * rights to use, copy, modify, merge, publish, distribute, sublicense, and/or\n * sell copies of the Software, and to permit persons to whom the Software is\n * furnished to do so, subject to the following conditions:\n *\n * The above copyright notice and this permission notice shall be included in\n * all copies or substantial portions of the Software.\n *\n * THE SOFTWARE IS PROVIDED \"AS IS\", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR\n * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,\n * FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL THE\n * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER\n * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING\n * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS\n * IN THE SOFTWARE.\n */\n\nimport \"focus-visible\"\n\nimport {\n EMPTY,\n NEVER,\n Observable,\n Subject,\n defer,\n delay,\n filter,\n map,\n merge,\n mergeWith,\n shareReplay,\n switchMap\n} from \"rxjs\"\n\nimport { configuration, feature } from \"./_\"\nimport {\n at,\n getActiveElement,\n getOptionalElement,\n requestJSON,\n setLocation,\n setToggle,\n watchDocument,\n watchKeyboard,\n watchLocation,\n watchLocationTarget,\n watchMedia,\n watchPrint,\n watchScript,\n watchViewport\n} from \"./browser\"\nimport {\n getComponentElement,\n getComponentElements,\n mountAnnounce,\n mountBackToTop,\n mountConsent,\n mountContent,\n mountDialog,\n mountHeader,\n mountHeaderTitle,\n mountPalette,\n mountProgress,\n mountSearch,\n mountSearchHiglight,\n mountSidebar,\n mountSource,\n mountTableOfContents,\n mountTabs,\n watchHeader,\n watchMain\n} from \"./components\"\nimport {\n SearchIndex,\n setupClipboardJS,\n setupInstantNavigation,\n setupVersionSelector\n} from \"./integrations\"\nimport {\n patchEllipsis,\n patchIndeterminate,\n patchScrollfix,\n patchScrolllock\n} from \"./patches\"\nimport \"./polyfills\"\n\n/* ----------------------------------------------------------------------------\n * Functions - @todo refactor\n * ------------------------------------------------------------------------- */\n\n/**\n * Fetch search index\n *\n * @returns Search index observable\n */\nfunction fetchSearchIndex(): Observable {\n if (location.protocol === \"file:\") {\n return watchScript(\n `${new URL(\"search/search_index.js\", config.base)}`\n )\n .pipe(\n // @ts-ignore - @todo fix typings\n map(() => __index),\n shareReplay(1)\n )\n } else {\n return requestJSON(\n new URL(\"search/search_index.json\", config.base)\n )\n }\n}\n\n/* ----------------------------------------------------------------------------\n * Application\n * ------------------------------------------------------------------------- */\n\n/* Yay, JavaScript is available */\ndocument.documentElement.classList.remove(\"no-js\")\ndocument.documentElement.classList.add(\"js\")\n\n/* Set up navigation observables and subjects */\nconst document$ = watchDocument()\nconst location$ = watchLocation()\nconst target$ = watchLocationTarget(location$)\nconst keyboard$ = watchKeyboard()\n\n/* Set up media observables */\nconst viewport$ = watchViewport()\nconst tablet$ = watchMedia(\"(min-width: 960px)\")\nconst screen$ = watchMedia(\"(min-width: 1220px)\")\nconst print$ = watchPrint()\n\n/* Retrieve search index, if search is enabled */\nconst config = configuration()\nconst index$ = document.forms.namedItem(\"search\")\n ? fetchSearchIndex()\n : NEVER\n\n/* Set up Clipboard.js integration */\nconst alert$ = new Subject()\nsetupClipboardJS({ alert$ })\n\n/* Set up progress indicator */\nconst progress$ = new Subject()\n\n/* Set up instant navigation, if enabled */\nif (feature(\"navigation.instant\"))\n setupInstantNavigation({ location$, viewport$, progress$ })\n .subscribe(document$)\n\n/* Set up version selector */\nif (config.version?.provider === \"mike\")\n setupVersionSelector({ document$ })\n\n/* Always close drawer and search on navigation */\nmerge(location$, target$)\n .pipe(\n delay(125)\n )\n .subscribe(() => {\n setToggle(\"drawer\", false)\n setToggle(\"search\", false)\n })\n\n/* Set up global keyboard handlers */\nkeyboard$\n .pipe(\n filter(({ mode }) => mode === \"global\")\n )\n .subscribe(key => {\n switch (key.type) {\n\n /* Go to previous page */\n case \"p\":\n case \",\":\n const prev = getOptionalElement(\"link[rel=prev]\")\n if (typeof prev !== \"undefined\")\n setLocation(prev)\n break\n\n /* Go to next page */\n case \"n\":\n case \".\":\n const next = getOptionalElement(\"link[rel=next]\")\n if (typeof next !== \"undefined\")\n setLocation(next)\n break\n\n /* Expand navigation, see https://bit.ly/3ZjG5io */\n case \"Enter\":\n const active = getActiveElement()\n if (active instanceof HTMLLabelElement)\n active.click()\n }\n })\n\n/* Set up patches */\npatchEllipsis({ document$ })\npatchIndeterminate({ document$, tablet$ })\npatchScrollfix({ document$ })\npatchScrolllock({ viewport$, tablet$ })\n\n/* Set up header and main area observable */\nconst header$ = watchHeader(getComponentElement(\"header\"), { viewport$ })\nconst main$ = document$\n .pipe(\n map(() => getComponentElement(\"main\")),\n switchMap(el => watchMain(el, { viewport$, header$ })),\n shareReplay(1)\n )\n\n/* Set up control component observables */\nconst control$ = merge(\n\n /* Consent */\n ...getComponentElements(\"consent\")\n .map(el => mountConsent(el, { target$ })),\n\n /* Dialog */\n ...getComponentElements(\"dialog\")\n .map(el => mountDialog(el, { alert$ })),\n\n /* Header */\n ...getComponentElements(\"header\")\n .map(el => mountHeader(el, { viewport$, header$, main$ })),\n\n /* Color palette */\n ...getComponentElements(\"palette\")\n .map(el => mountPalette(el)),\n\n /* Progress bar */\n ...getComponentElements(\"progress\")\n .map(el => mountProgress(el, { progress$ })),\n\n /* Search */\n ...getComponentElements(\"search\")\n .map(el => mountSearch(el, { index$, keyboard$ })),\n\n /* Repository information */\n ...getComponentElements(\"source\")\n .map(el => mountSource(el))\n)\n\n/* Set up content component observables */\nconst content$ = defer(() => merge(\n\n /* Announcement bar */\n ...getComponentElements(\"announce\")\n .map(el => mountAnnounce(el)),\n\n /* Content */\n ...getComponentElements(\"content\")\n .map(el => mountContent(el, { viewport$, target$, print$ })),\n\n /* Search highlighting */\n ...getComponentElements(\"content\")\n .map(el => feature(\"search.highlight\")\n ? mountSearchHiglight(el, { index$, location$ })\n : EMPTY\n ),\n\n /* Header title */\n ...getComponentElements(\"header-title\")\n .map(el => mountHeaderTitle(el, { viewport$, header$ })),\n\n /* Sidebar */\n ...getComponentElements(\"sidebar\")\n .map(el => el.getAttribute(\"data-md-type\") === \"navigation\"\n ? at(screen$, () => mountSidebar(el, { viewport$, header$, main$ }))\n : at(tablet$, () => mountSidebar(el, { viewport$, header$, main$ }))\n ),\n\n /* Navigation tabs */\n ...getComponentElements(\"tabs\")\n .map(el => mountTabs(el, { viewport$, header$ })),\n\n /* Table of contents */\n ...getComponentElements(\"toc\")\n .map(el => mountTableOfContents(el, {\n viewport$, header$, main$, target$\n })),\n\n /* Back-to-top button */\n ...getComponentElements(\"top\")\n .map(el => mountBackToTop(el, { viewport$, header$, main$, target$ }))\n))\n\n/* Set up component observables */\nconst component$ = document$\n .pipe(\n switchMap(() => content$),\n mergeWith(control$),\n shareReplay(1)\n )\n\n/* Subscribe to all components */\ncomponent$.subscribe()\n\n/* ----------------------------------------------------------------------------\n * Exports\n * ------------------------------------------------------------------------- */\n\nwindow.document$ = document$ /* Document observable */\nwindow.location$ = location$ /* Location subject */\nwindow.target$ = target$ /* Location target observable */\nwindow.keyboard$ = keyboard$ /* Keyboard observable */\nwindow.viewport$ = viewport$ /* Viewport observable */\nwindow.tablet$ = tablet$ /* Media tablet observable */\nwindow.screen$ = screen$ /* Media screen observable */\nwindow.print$ = print$ /* Media print observable */\nwindow.alert$ = alert$ /* Alert subject */\nwindow.progress$ = progress$ /* Progress indicator subject */\nwindow.component$ = component$ /* Component observable */\n", "/*! *****************************************************************************\r\nCopyright (c) Microsoft Corporation.\r\n\r\nPermission to use, copy, modify, and/or distribute this software for any\r\npurpose with or without fee is hereby granted.\r\n\r\nTHE SOFTWARE IS PROVIDED \"AS IS\" AND THE AUTHOR DISCLAIMS ALL WARRANTIES WITH\r\nREGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY\r\nAND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY SPECIAL, DIRECT,\r\nINDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM\r\nLOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR\r\nOTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR\r\nPERFORMANCE OF THIS SOFTWARE.\r\n***************************************************************************** */\r\n/* global Reflect, Promise */\r\n\r\nvar extendStatics = function(d, b) {\r\n extendStatics = Object.setPrototypeOf ||\r\n ({ __proto__: [] } instanceof Array && function (d, b) { d.__proto__ = b; }) ||\r\n function (d, b) { for (var p in b) if (Object.prototype.hasOwnProperty.call(b, p)) d[p] = b[p]; };\r\n return extendStatics(d, b);\r\n};\r\n\r\nexport function __extends(d, b) {\r\n if (typeof b !== \"function\" && b !== null)\r\n throw new TypeError(\"Class extends value \" + String(b) + \" is not a constructor or null\");\r\n extendStatics(d, b);\r\n function __() { this.constructor = d; }\r\n d.prototype = b === null ? Object.create(b) : (__.prototype = b.prototype, new __());\r\n}\r\n\r\nexport var __assign = function() {\r\n __assign = Object.assign || function __assign(t) {\r\n for (var s, i = 1, n = arguments.length; i < n; i++) {\r\n s = arguments[i];\r\n for (var p in s) if (Object.prototype.hasOwnProperty.call(s, p)) t[p] = s[p];\r\n }\r\n return t;\r\n }\r\n return __assign.apply(this, arguments);\r\n}\r\n\r\nexport function __rest(s, e) {\r\n var t = {};\r\n for (var p in s) if (Object.prototype.hasOwnProperty.call(s, p) && e.indexOf(p) < 0)\r\n t[p] = s[p];\r\n if (s != null && typeof Object.getOwnPropertySymbols === \"function\")\r\n for (var i = 0, p = Object.getOwnPropertySymbols(s); i < p.length; i++) {\r\n if (e.indexOf(p[i]) < 0 && Object.prototype.propertyIsEnumerable.call(s, p[i]))\r\n t[p[i]] = s[p[i]];\r\n }\r\n return t;\r\n}\r\n\r\nexport function __decorate(decorators, target, key, desc) {\r\n var c = arguments.length, r = c < 3 ? target : desc === null ? desc = Object.getOwnPropertyDescriptor(target, key) : desc, d;\r\n if (typeof Reflect === \"object\" && typeof Reflect.decorate === \"function\") r = Reflect.decorate(decorators, target, key, desc);\r\n else for (var i = decorators.length - 1; i >= 0; i--) if (d = decorators[i]) r = (c < 3 ? d(r) : c > 3 ? d(target, key, r) : d(target, key)) || r;\r\n return c > 3 && r && Object.defineProperty(target, key, r), r;\r\n}\r\n\r\nexport function __param(paramIndex, decorator) {\r\n return function (target, key) { decorator(target, key, paramIndex); }\r\n}\r\n\r\nexport function __metadata(metadataKey, metadataValue) {\r\n if (typeof Reflect === \"object\" && typeof Reflect.metadata === \"function\") return Reflect.metadata(metadataKey, metadataValue);\r\n}\r\n\r\nexport function __awaiter(thisArg, _arguments, P, generator) {\r\n function adopt(value) { return value instanceof P ? value : new P(function (resolve) { resolve(value); }); }\r\n return new (P || (P = Promise))(function (resolve, reject) {\r\n function fulfilled(value) { try { step(generator.next(value)); } catch (e) { reject(e); } }\r\n function rejected(value) { try { step(generator[\"throw\"](value)); } catch (e) { reject(e); } }\r\n function step(result) { result.done ? resolve(result.value) : adopt(result.value).then(fulfilled, rejected); }\r\n step((generator = generator.apply(thisArg, _arguments || [])).next());\r\n });\r\n}\r\n\r\nexport function __generator(thisArg, body) {\r\n var _ = { label: 0, sent: function() { if (t[0] & 1) throw t[1]; return t[1]; }, trys: [], ops: [] }, f, y, t, g;\r\n return g = { next: verb(0), \"throw\": verb(1), \"return\": verb(2) }, typeof Symbol === \"function\" && (g[Symbol.iterator] = function() { return this; }), g;\r\n function verb(n) { return function (v) { return step([n, v]); }; }\r\n function step(op) {\r\n if (f) throw new TypeError(\"Generator is already executing.\");\r\n while (_) try {\r\n if (f = 1, y && (t = op[0] & 2 ? y[\"return\"] : op[0] ? y[\"throw\"] || ((t = y[\"return\"]) && t.call(y), 0) : y.next) && !(t = t.call(y, op[1])).done) return t;\r\n if (y = 0, t) op = [op[0] & 2, t.value];\r\n switch (op[0]) {\r\n case 0: case 1: t = op; break;\r\n case 4: _.label++; return { value: op[1], done: false };\r\n case 5: _.label++; y = op[1]; op = [0]; continue;\r\n case 7: op = _.ops.pop(); _.trys.pop(); continue;\r\n default:\r\n if (!(t = _.trys, t = t.length > 0 && t[t.length - 1]) && (op[0] === 6 || op[0] === 2)) { _ = 0; continue; }\r\n if (op[0] === 3 && (!t || (op[1] > t[0] && op[1] < t[3]))) { _.label = op[1]; break; }\r\n if (op[0] === 6 && _.label < t[1]) { _.label = t[1]; t = op; break; }\r\n if (t && _.label < t[2]) { _.label = t[2]; _.ops.push(op); break; }\r\n if (t[2]) _.ops.pop();\r\n _.trys.pop(); continue;\r\n }\r\n op = body.call(thisArg, _);\r\n } catch (e) { op = [6, e]; y = 0; } finally { f = t = 0; }\r\n if (op[0] & 5) throw op[1]; return { value: op[0] ? op[1] : void 0, done: true };\r\n }\r\n}\r\n\r\nexport var __createBinding = Object.create ? (function(o, m, k, k2) {\r\n if (k2 === undefined) k2 = k;\r\n Object.defineProperty(o, k2, { enumerable: true, get: function() { return m[k]; } });\r\n}) : (function(o, m, k, k2) {\r\n if (k2 === undefined) k2 = k;\r\n o[k2] = m[k];\r\n});\r\n\r\nexport function __exportStar(m, o) {\r\n for (var p in m) if (p !== \"default\" && !Object.prototype.hasOwnProperty.call(o, p)) __createBinding(o, m, p);\r\n}\r\n\r\nexport function __values(o) {\r\n var s = typeof Symbol === \"function\" && Symbol.iterator, m = s && o[s], i = 0;\r\n if (m) return m.call(o);\r\n if (o && typeof o.length === \"number\") return {\r\n next: function () {\r\n if (o && i >= o.length) o = void 0;\r\n return { value: o && o[i++], done: !o };\r\n }\r\n };\r\n throw new TypeError(s ? \"Object is not iterable.\" : \"Symbol.iterator is not defined.\");\r\n}\r\n\r\nexport function __read(o, n) {\r\n var m = typeof Symbol === \"function\" && o[Symbol.iterator];\r\n if (!m) return o;\r\n var i = m.call(o), r, ar = [], e;\r\n try {\r\n while ((n === void 0 || n-- > 0) && !(r = i.next()).done) ar.push(r.value);\r\n }\r\n catch (error) { e = { error: error }; }\r\n finally {\r\n try {\r\n if (r && !r.done && (m = i[\"return\"])) m.call(i);\r\n }\r\n finally { if (e) throw e.error; }\r\n }\r\n return ar;\r\n}\r\n\r\n/** @deprecated */\r\nexport function __spread() {\r\n for (var ar = [], i = 0; i < arguments.length; i++)\r\n ar = ar.concat(__read(arguments[i]));\r\n return ar;\r\n}\r\n\r\n/** @deprecated */\r\nexport function __spreadArrays() {\r\n for (var s = 0, i = 0, il = arguments.length; i < il; i++) s += arguments[i].length;\r\n for (var r = Array(s), k = 0, i = 0; i < il; i++)\r\n for (var a = arguments[i], j = 0, jl = a.length; j < jl; j++, k++)\r\n r[k] = a[j];\r\n return r;\r\n}\r\n\r\nexport function __spreadArray(to, from, pack) {\r\n if (pack || arguments.length === 2) for (var i = 0, l = from.length, ar; i < l; i++) {\r\n if (ar || !(i in from)) {\r\n if (!ar) ar = Array.prototype.slice.call(from, 0, i);\r\n ar[i] = from[i];\r\n }\r\n }\r\n return to.concat(ar || Array.prototype.slice.call(from));\r\n}\r\n\r\nexport function __await(v) {\r\n return this instanceof __await ? (this.v = v, this) : new __await(v);\r\n}\r\n\r\nexport function __asyncGenerator(thisArg, _arguments, generator) {\r\n if (!Symbol.asyncIterator) throw new TypeError(\"Symbol.asyncIterator is not defined.\");\r\n var g = generator.apply(thisArg, _arguments || []), i, q = [];\r\n return i = {}, verb(\"next\"), verb(\"throw\"), verb(\"return\"), i[Symbol.asyncIterator] = function () { return this; }, i;\r\n function verb(n) { if (g[n]) i[n] = function (v) { return new Promise(function (a, b) { q.push([n, v, a, b]) > 1 || resume(n, v); }); }; }\r\n function resume(n, v) { try { step(g[n](v)); } catch (e) { settle(q[0][3], e); } }\r\n function step(r) { r.value instanceof __await ? Promise.resolve(r.value.v).then(fulfill, reject) : settle(q[0][2], r); }\r\n function fulfill(value) { resume(\"next\", value); }\r\n function reject(value) { resume(\"throw\", value); }\r\n function settle(f, v) { if (f(v), q.shift(), q.length) resume(q[0][0], q[0][1]); }\r\n}\r\n\r\nexport function __asyncDelegator(o) {\r\n var i, p;\r\n return i = {}, verb(\"next\"), verb(\"throw\", function (e) { throw e; }), verb(\"return\"), i[Symbol.iterator] = function () { return this; }, i;\r\n function verb(n, f) { i[n] = o[n] ? function (v) { return (p = !p) ? { value: __await(o[n](v)), done: n === \"return\" } : f ? f(v) : v; } : f; }\r\n}\r\n\r\nexport function __asyncValues(o) {\r\n if (!Symbol.asyncIterator) throw new TypeError(\"Symbol.asyncIterator is not defined.\");\r\n var m = o[Symbol.asyncIterator], i;\r\n return m ? m.call(o) : (o = typeof __values === \"function\" ? __values(o) : o[Symbol.iterator](), i = {}, verb(\"next\"), verb(\"throw\"), verb(\"return\"), i[Symbol.asyncIterator] = function () { return this; }, i);\r\n function verb(n) { i[n] = o[n] && function (v) { return new Promise(function (resolve, reject) { v = o[n](v), settle(resolve, reject, v.done, v.value); }); }; }\r\n function settle(resolve, reject, d, v) { Promise.resolve(v).then(function(v) { resolve({ value: v, done: d }); }, reject); }\r\n}\r\n\r\nexport function __makeTemplateObject(cooked, raw) {\r\n if (Object.defineProperty) { Object.defineProperty(cooked, \"raw\", { value: raw }); } else { cooked.raw = raw; }\r\n return cooked;\r\n};\r\n\r\nvar __setModuleDefault = Object.create ? (function(o, v) {\r\n Object.defineProperty(o, \"default\", { enumerable: true, value: v });\r\n}) : function(o, v) {\r\n o[\"default\"] = v;\r\n};\r\n\r\nexport function __importStar(mod) {\r\n if (mod && mod.__esModule) return mod;\r\n var result = {};\r\n if (mod != null) for (var k in mod) if (k !== \"default\" && Object.prototype.hasOwnProperty.call(mod, k)) __createBinding(result, mod, k);\r\n __setModuleDefault(result, mod);\r\n return result;\r\n}\r\n\r\nexport function __importDefault(mod) {\r\n return (mod && mod.__esModule) ? mod : { default: mod };\r\n}\r\n\r\nexport function __classPrivateFieldGet(receiver, state, kind, f) {\r\n if (kind === \"a\" && !f) throw new TypeError(\"Private accessor was defined without a getter\");\r\n if (typeof state === \"function\" ? receiver !== state || !f : !state.has(receiver)) throw new TypeError(\"Cannot read private member from an object whose class did not declare it\");\r\n return kind === \"m\" ? f : kind === \"a\" ? f.call(receiver) : f ? f.value : state.get(receiver);\r\n}\r\n\r\nexport function __classPrivateFieldSet(receiver, state, value, kind, f) {\r\n if (kind === \"m\") throw new TypeError(\"Private method is not writable\");\r\n if (kind === \"a\" && !f) throw new TypeError(\"Private accessor was defined without a setter\");\r\n if (typeof state === \"function\" ? receiver !== state || !f : !state.has(receiver)) throw new TypeError(\"Cannot write private member to an object whose class did not declare it\");\r\n return (kind === \"a\" ? f.call(receiver, value) : f ? f.value = value : state.set(receiver, value)), value;\r\n}\r\n", "/**\n * Returns true if the object is a function.\n * @param value The value to check\n */\nexport function isFunction(value: any): value is (...args: any[]) => any {\n return typeof value === 'function';\n}\n", "/**\n * Used to create Error subclasses until the community moves away from ES5.\n *\n * This is because compiling from TypeScript down to ES5 has issues with subclassing Errors\n * as well as other built-in types: https://github.com/Microsoft/TypeScript/issues/12123\n *\n * @param createImpl A factory function to create the actual constructor implementation. The returned\n * function should be a named function that calls `_super` internally.\n */\nexport function createErrorClass(createImpl: (_super: any) => any): T {\n const _super = (instance: any) => {\n Error.call(instance);\n instance.stack = new Error().stack;\n };\n\n const ctorFunc = createImpl(_super);\n ctorFunc.prototype = Object.create(Error.prototype);\n ctorFunc.prototype.constructor = ctorFunc;\n return ctorFunc;\n}\n", "import { createErrorClass } from './createErrorClass';\n\nexport interface UnsubscriptionError extends Error {\n readonly errors: any[];\n}\n\nexport interface UnsubscriptionErrorCtor {\n /**\n * @deprecated Internal implementation detail. Do not construct error instances.\n * Cannot be tagged as internal: https://github.com/ReactiveX/rxjs/issues/6269\n */\n new (errors: any[]): UnsubscriptionError;\n}\n\n/**\n * An error thrown when one or more errors have occurred during the\n * `unsubscribe` of a {@link Subscription}.\n */\nexport const UnsubscriptionError: UnsubscriptionErrorCtor = createErrorClass(\n (_super) =>\n function UnsubscriptionErrorImpl(this: any, errors: (Error | string)[]) {\n _super(this);\n this.message = errors\n ? `${errors.length} errors occurred during unsubscription:\n${errors.map((err, i) => `${i + 1}) ${err.toString()}`).join('\\n ')}`\n : '';\n this.name = 'UnsubscriptionError';\n this.errors = errors;\n }\n);\n", "/**\n * Removes an item from an array, mutating it.\n * @param arr The array to remove the item from\n * @param item The item to remove\n */\nexport function arrRemove(arr: T[] | undefined | null, item: T) {\n if (arr) {\n const index = arr.indexOf(item);\n 0 <= index && arr.splice(index, 1);\n }\n}\n", "import { isFunction } from './util/isFunction';\nimport { UnsubscriptionError } from './util/UnsubscriptionError';\nimport { SubscriptionLike, TeardownLogic, Unsubscribable } from './types';\nimport { arrRemove } from './util/arrRemove';\n\n/**\n * Represents a disposable resource, such as the execution of an Observable. A\n * Subscription has one important method, `unsubscribe`, that takes no argument\n * and just disposes the resource held by the subscription.\n *\n * Additionally, subscriptions may be grouped together through the `add()`\n * method, which will attach a child Subscription to the current Subscription.\n * When a Subscription is unsubscribed, all its children (and its grandchildren)\n * will be unsubscribed as well.\n *\n * @class Subscription\n */\nexport class Subscription implements SubscriptionLike {\n /** @nocollapse */\n public static EMPTY = (() => {\n const empty = new Subscription();\n empty.closed = true;\n return empty;\n })();\n\n /**\n * A flag to indicate whether this Subscription has already been unsubscribed.\n */\n public closed = false;\n\n private _parentage: Subscription[] | Subscription | null = null;\n\n /**\n * The list of registered finalizers to execute upon unsubscription. Adding and removing from this\n * list occurs in the {@link #add} and {@link #remove} methods.\n */\n private _finalizers: Exclude[] | null = null;\n\n /**\n * @param initialTeardown A function executed first as part of the finalization\n * process that is kicked off when {@link #unsubscribe} is called.\n */\n constructor(private initialTeardown?: () => void) {}\n\n /**\n * Disposes the resources held by the subscription. May, for instance, cancel\n * an ongoing Observable execution or cancel any other type of work that\n * started when the Subscription was created.\n * @return {void}\n */\n unsubscribe(): void {\n let errors: any[] | undefined;\n\n if (!this.closed) {\n this.closed = true;\n\n // Remove this from it's parents.\n const { _parentage } = this;\n if (_parentage) {\n this._parentage = null;\n if (Array.isArray(_parentage)) {\n for (const parent of _parentage) {\n parent.remove(this);\n }\n } else {\n _parentage.remove(this);\n }\n }\n\n const { initialTeardown: initialFinalizer } = this;\n if (isFunction(initialFinalizer)) {\n try {\n initialFinalizer();\n } catch (e) {\n errors = e instanceof UnsubscriptionError ? e.errors : [e];\n }\n }\n\n const { _finalizers } = this;\n if (_finalizers) {\n this._finalizers = null;\n for (const finalizer of _finalizers) {\n try {\n execFinalizer(finalizer);\n } catch (err) {\n errors = errors ?? [];\n if (err instanceof UnsubscriptionError) {\n errors = [...errors, ...err.errors];\n } else {\n errors.push(err);\n }\n }\n }\n }\n\n if (errors) {\n throw new UnsubscriptionError(errors);\n }\n }\n }\n\n /**\n * Adds a finalizer to this subscription, so that finalization will be unsubscribed/called\n * when this subscription is unsubscribed. If this subscription is already {@link #closed},\n * because it has already been unsubscribed, then whatever finalizer is passed to it\n * will automatically be executed (unless the finalizer itself is also a closed subscription).\n *\n * Closed Subscriptions cannot be added as finalizers to any subscription. Adding a closed\n * subscription to a any subscription will result in no operation. (A noop).\n *\n * Adding a subscription to itself, or adding `null` or `undefined` will not perform any\n * operation at all. (A noop).\n *\n * `Subscription` instances that are added to this instance will automatically remove themselves\n * if they are unsubscribed. Functions and {@link Unsubscribable} objects that you wish to remove\n * will need to be removed manually with {@link #remove}\n *\n * @param teardown The finalization logic to add to this subscription.\n */\n add(teardown: TeardownLogic): void {\n // Only add the finalizer if it's not undefined\n // and don't add a subscription to itself.\n if (teardown && teardown !== this) {\n if (this.closed) {\n // If this subscription is already closed,\n // execute whatever finalizer is handed to it automatically.\n execFinalizer(teardown);\n } else {\n if (teardown instanceof Subscription) {\n // We don't add closed subscriptions, and we don't add the same subscription\n // twice. Subscription unsubscribe is idempotent.\n if (teardown.closed || teardown._hasParent(this)) {\n return;\n }\n teardown._addParent(this);\n }\n (this._finalizers = this._finalizers ?? []).push(teardown);\n }\n }\n }\n\n /**\n * Checks to see if a this subscription already has a particular parent.\n * This will signal that this subscription has already been added to the parent in question.\n * @param parent the parent to check for\n */\n private _hasParent(parent: Subscription) {\n const { _parentage } = this;\n return _parentage === parent || (Array.isArray(_parentage) && _parentage.includes(parent));\n }\n\n /**\n * Adds a parent to this subscription so it can be removed from the parent if it\n * unsubscribes on it's own.\n *\n * NOTE: THIS ASSUMES THAT {@link _hasParent} HAS ALREADY BEEN CHECKED.\n * @param parent The parent subscription to add\n */\n private _addParent(parent: Subscription) {\n const { _parentage } = this;\n this._parentage = Array.isArray(_parentage) ? (_parentage.push(parent), _parentage) : _parentage ? [_parentage, parent] : parent;\n }\n\n /**\n * Called on a child when it is removed via {@link #remove}.\n * @param parent The parent to remove\n */\n private _removeParent(parent: Subscription) {\n const { _parentage } = this;\n if (_parentage === parent) {\n this._parentage = null;\n } else if (Array.isArray(_parentage)) {\n arrRemove(_parentage, parent);\n }\n }\n\n /**\n * Removes a finalizer from this subscription that was previously added with the {@link #add} method.\n *\n * Note that `Subscription` instances, when unsubscribed, will automatically remove themselves\n * from every other `Subscription` they have been added to. This means that using the `remove` method\n * is not a common thing and should be used thoughtfully.\n *\n * If you add the same finalizer instance of a function or an unsubscribable object to a `Subscription` instance\n * more than once, you will need to call `remove` the same number of times to remove all instances.\n *\n * All finalizer instances are removed to free up memory upon unsubscription.\n *\n * @param teardown The finalizer to remove from this subscription\n */\n remove(teardown: Exclude): void {\n const { _finalizers } = this;\n _finalizers && arrRemove(_finalizers, teardown);\n\n if (teardown instanceof Subscription) {\n teardown._removeParent(this);\n }\n }\n}\n\nexport const EMPTY_SUBSCRIPTION = Subscription.EMPTY;\n\nexport function isSubscription(value: any): value is Subscription {\n return (\n value instanceof Subscription ||\n (value && 'closed' in value && isFunction(value.remove) && isFunction(value.add) && isFunction(value.unsubscribe))\n );\n}\n\nfunction execFinalizer(finalizer: Unsubscribable | (() => void)) {\n if (isFunction(finalizer)) {\n finalizer();\n } else {\n finalizer.unsubscribe();\n }\n}\n", "import { Subscriber } from './Subscriber';\nimport { ObservableNotification } from './types';\n\n/**\n * The {@link GlobalConfig} object for RxJS. It is used to configure things\n * like how to react on unhandled errors.\n */\nexport const config: GlobalConfig = {\n onUnhandledError: null,\n onStoppedNotification: null,\n Promise: undefined,\n useDeprecatedSynchronousErrorHandling: false,\n useDeprecatedNextContext: false,\n};\n\n/**\n * The global configuration object for RxJS, used to configure things\n * like how to react on unhandled errors. Accessible via {@link config}\n * object.\n */\nexport interface GlobalConfig {\n /**\n * A registration point for unhandled errors from RxJS. These are errors that\n * cannot were not handled by consuming code in the usual subscription path. For\n * example, if you have this configured, and you subscribe to an observable without\n * providing an error handler, errors from that subscription will end up here. This\n * will _always_ be called asynchronously on another job in the runtime. This is because\n * we do not want errors thrown in this user-configured handler to interfere with the\n * behavior of the library.\n */\n onUnhandledError: ((err: any) => void) | null;\n\n /**\n * A registration point for notifications that cannot be sent to subscribers because they\n * have completed, errored or have been explicitly unsubscribed. By default, next, complete\n * and error notifications sent to stopped subscribers are noops. However, sometimes callers\n * might want a different behavior. For example, with sources that attempt to report errors\n * to stopped subscribers, a caller can configure RxJS to throw an unhandled error instead.\n * This will _always_ be called asynchronously on another job in the runtime. This is because\n * we do not want errors thrown in this user-configured handler to interfere with the\n * behavior of the library.\n */\n onStoppedNotification: ((notification: ObservableNotification, subscriber: Subscriber) => void) | null;\n\n /**\n * The promise constructor used by default for {@link Observable#toPromise toPromise} and {@link Observable#forEach forEach}\n * methods.\n *\n * @deprecated As of version 8, RxJS will no longer support this sort of injection of a\n * Promise constructor. If you need a Promise implementation other than native promises,\n * please polyfill/patch Promise as you see appropriate. Will be removed in v8.\n */\n Promise?: PromiseConstructorLike;\n\n /**\n * If true, turns on synchronous error rethrowing, which is a deprecated behavior\n * in v6 and higher. This behavior enables bad patterns like wrapping a subscribe\n * call in a try/catch block. It also enables producer interference, a nasty bug\n * where a multicast can be broken for all observers by a downstream consumer with\n * an unhandled error. DO NOT USE THIS FLAG UNLESS IT'S NEEDED TO BUY TIME\n * FOR MIGRATION REASONS.\n *\n * @deprecated As of version 8, RxJS will no longer support synchronous throwing\n * of unhandled errors. All errors will be thrown on a separate call stack to prevent bad\n * behaviors described above. Will be removed in v8.\n */\n useDeprecatedSynchronousErrorHandling: boolean;\n\n /**\n * If true, enables an as-of-yet undocumented feature from v5: The ability to access\n * `unsubscribe()` via `this` context in `next` functions created in observers passed\n * to `subscribe`.\n *\n * This is being removed because the performance was severely problematic, and it could also cause\n * issues when types other than POJOs are passed to subscribe as subscribers, as they will likely have\n * their `this` context overwritten.\n *\n * @deprecated As of version 8, RxJS will no longer support altering the\n * context of next functions provided as part of an observer to Subscribe. Instead,\n * you will have access to a subscription or a signal or token that will allow you to do things like\n * unsubscribe and test closed status. Will be removed in v8.\n */\n useDeprecatedNextContext: boolean;\n}\n", "import type { TimerHandle } from './timerHandle';\ntype SetTimeoutFunction = (handler: () => void, timeout?: number, ...args: any[]) => TimerHandle;\ntype ClearTimeoutFunction = (handle: TimerHandle) => void;\n\ninterface TimeoutProvider {\n setTimeout: SetTimeoutFunction;\n clearTimeout: ClearTimeoutFunction;\n delegate:\n | {\n setTimeout: SetTimeoutFunction;\n clearTimeout: ClearTimeoutFunction;\n }\n | undefined;\n}\n\nexport const timeoutProvider: TimeoutProvider = {\n // When accessing the delegate, use the variable rather than `this` so that\n // the functions can be called without being bound to the provider.\n setTimeout(handler: () => void, timeout?: number, ...args) {\n const { delegate } = timeoutProvider;\n if (delegate?.setTimeout) {\n return delegate.setTimeout(handler, timeout, ...args);\n }\n return setTimeout(handler, timeout, ...args);\n },\n clearTimeout(handle) {\n const { delegate } = timeoutProvider;\n return (delegate?.clearTimeout || clearTimeout)(handle as any);\n },\n delegate: undefined,\n};\n", "import { config } from '../config';\nimport { timeoutProvider } from '../scheduler/timeoutProvider';\n\n/**\n * Handles an error on another job either with the user-configured {@link onUnhandledError},\n * or by throwing it on that new job so it can be picked up by `window.onerror`, `process.on('error')`, etc.\n *\n * This should be called whenever there is an error that is out-of-band with the subscription\n * or when an error hits a terminal boundary of the subscription and no error handler was provided.\n *\n * @param err the error to report\n */\nexport function reportUnhandledError(err: any) {\n timeoutProvider.setTimeout(() => {\n const { onUnhandledError } = config;\n if (onUnhandledError) {\n // Execute the user-configured error handler.\n onUnhandledError(err);\n } else {\n // Throw so it is picked up by the runtime's uncaught error mechanism.\n throw err;\n }\n });\n}\n", "/* tslint:disable:no-empty */\nexport function noop() { }\n", "import { CompleteNotification, NextNotification, ErrorNotification } from './types';\n\n/**\n * A completion object optimized for memory use and created to be the\n * same \"shape\" as other notifications in v8.\n * @internal\n */\nexport const COMPLETE_NOTIFICATION = (() => createNotification('C', undefined, undefined) as CompleteNotification)();\n\n/**\n * Internal use only. Creates an optimized error notification that is the same \"shape\"\n * as other notifications.\n * @internal\n */\nexport function errorNotification(error: any): ErrorNotification {\n return createNotification('E', undefined, error) as any;\n}\n\n/**\n * Internal use only. Creates an optimized next notification that is the same \"shape\"\n * as other notifications.\n * @internal\n */\nexport function nextNotification(value: T) {\n return createNotification('N', value, undefined) as NextNotification;\n}\n\n/**\n * Ensures that all notifications created internally have the same \"shape\" in v8.\n *\n * TODO: This is only exported to support a crazy legacy test in `groupBy`.\n * @internal\n */\nexport function createNotification(kind: 'N' | 'E' | 'C', value: any, error: any) {\n return {\n kind,\n value,\n error,\n };\n}\n", "import { config } from '../config';\n\nlet context: { errorThrown: boolean; error: any } | null = null;\n\n/**\n * Handles dealing with errors for super-gross mode. Creates a context, in which\n * any synchronously thrown errors will be passed to {@link captureError}. Which\n * will record the error such that it will be rethrown after the call back is complete.\n * TODO: Remove in v8\n * @param cb An immediately executed function.\n */\nexport function errorContext(cb: () => void) {\n if (config.useDeprecatedSynchronousErrorHandling) {\n const isRoot = !context;\n if (isRoot) {\n context = { errorThrown: false, error: null };\n }\n cb();\n if (isRoot) {\n const { errorThrown, error } = context!;\n context = null;\n if (errorThrown) {\n throw error;\n }\n }\n } else {\n // This is the general non-deprecated path for everyone that\n // isn't crazy enough to use super-gross mode (useDeprecatedSynchronousErrorHandling)\n cb();\n }\n}\n\n/**\n * Captures errors only in super-gross mode.\n * @param err the error to capture\n */\nexport function captureError(err: any) {\n if (config.useDeprecatedSynchronousErrorHandling && context) {\n context.errorThrown = true;\n context.error = err;\n }\n}\n", "import { isFunction } from './util/isFunction';\nimport { Observer, ObservableNotification } from './types';\nimport { isSubscription, Subscription } from './Subscription';\nimport { config } from './config';\nimport { reportUnhandledError } from './util/reportUnhandledError';\nimport { noop } from './util/noop';\nimport { nextNotification, errorNotification, COMPLETE_NOTIFICATION } from './NotificationFactories';\nimport { timeoutProvider } from './scheduler/timeoutProvider';\nimport { captureError } from './util/errorContext';\n\n/**\n * Implements the {@link Observer} interface and extends the\n * {@link Subscription} class. While the {@link Observer} is the public API for\n * consuming the values of an {@link Observable}, all Observers get converted to\n * a Subscriber, in order to provide Subscription-like capabilities such as\n * `unsubscribe`. Subscriber is a common type in RxJS, and crucial for\n * implementing operators, but it is rarely used as a public API.\n *\n * @class Subscriber\n */\nexport class Subscriber extends Subscription implements Observer {\n /**\n * A static factory for a Subscriber, given a (potentially partial) definition\n * of an Observer.\n * @param next The `next` callback of an Observer.\n * @param error The `error` callback of an\n * Observer.\n * @param complete The `complete` callback of an\n * Observer.\n * @return A Subscriber wrapping the (partially defined)\n * Observer represented by the given arguments.\n * @nocollapse\n * @deprecated Do not use. Will be removed in v8. There is no replacement for this\n * method, and there is no reason to be creating instances of `Subscriber` directly.\n * If you have a specific use case, please file an issue.\n */\n static create(next?: (x?: T) => void, error?: (e?: any) => void, complete?: () => void): Subscriber {\n return new SafeSubscriber(next, error, complete);\n }\n\n /** @deprecated Internal implementation detail, do not use directly. Will be made internal in v8. */\n protected isStopped: boolean = false;\n /** @deprecated Internal implementation detail, do not use directly. Will be made internal in v8. */\n protected destination: Subscriber | Observer; // this `any` is the escape hatch to erase extra type param (e.g. R)\n\n /**\n * @deprecated Internal implementation detail, do not use directly. Will be made internal in v8.\n * There is no reason to directly create an instance of Subscriber. This type is exported for typings reasons.\n */\n constructor(destination?: Subscriber | Observer) {\n super();\n if (destination) {\n this.destination = destination;\n // Automatically chain subscriptions together here.\n // if destination is a Subscription, then it is a Subscriber.\n if (isSubscription(destination)) {\n destination.add(this);\n }\n } else {\n this.destination = EMPTY_OBSERVER;\n }\n }\n\n /**\n * The {@link Observer} callback to receive notifications of type `next` from\n * the Observable, with a value. The Observable may call this method 0 or more\n * times.\n * @param {T} [value] The `next` value.\n * @return {void}\n */\n next(value?: T): void {\n if (this.isStopped) {\n handleStoppedNotification(nextNotification(value), this);\n } else {\n this._next(value!);\n }\n }\n\n /**\n * The {@link Observer} callback to receive notifications of type `error` from\n * the Observable, with an attached `Error`. Notifies the Observer that\n * the Observable has experienced an error condition.\n * @param {any} [err] The `error` exception.\n * @return {void}\n */\n error(err?: any): void {\n if (this.isStopped) {\n handleStoppedNotification(errorNotification(err), this);\n } else {\n this.isStopped = true;\n this._error(err);\n }\n }\n\n /**\n * The {@link Observer} callback to receive a valueless notification of type\n * `complete` from the Observable. Notifies the Observer that the Observable\n * has finished sending push-based notifications.\n * @return {void}\n */\n complete(): void {\n if (this.isStopped) {\n handleStoppedNotification(COMPLETE_NOTIFICATION, this);\n } else {\n this.isStopped = true;\n this._complete();\n }\n }\n\n unsubscribe(): void {\n if (!this.closed) {\n this.isStopped = true;\n super.unsubscribe();\n this.destination = null!;\n }\n }\n\n protected _next(value: T): void {\n this.destination.next(value);\n }\n\n protected _error(err: any): void {\n try {\n this.destination.error(err);\n } finally {\n this.unsubscribe();\n }\n }\n\n protected _complete(): void {\n try {\n this.destination.complete();\n } finally {\n this.unsubscribe();\n }\n }\n}\n\n/**\n * This bind is captured here because we want to be able to have\n * compatibility with monoid libraries that tend to use a method named\n * `bind`. In particular, a library called Monio requires this.\n */\nconst _bind = Function.prototype.bind;\n\nfunction bind any>(fn: Fn, thisArg: any): Fn {\n return _bind.call(fn, thisArg);\n}\n\n/**\n * Internal optimization only, DO NOT EXPOSE.\n * @internal\n */\nclass ConsumerObserver implements Observer {\n constructor(private partialObserver: Partial>) {}\n\n next(value: T): void {\n const { partialObserver } = this;\n if (partialObserver.next) {\n try {\n partialObserver.next(value);\n } catch (error) {\n handleUnhandledError(error);\n }\n }\n }\n\n error(err: any): void {\n const { partialObserver } = this;\n if (partialObserver.error) {\n try {\n partialObserver.error(err);\n } catch (error) {\n handleUnhandledError(error);\n }\n } else {\n handleUnhandledError(err);\n }\n }\n\n complete(): void {\n const { partialObserver } = this;\n if (partialObserver.complete) {\n try {\n partialObserver.complete();\n } catch (error) {\n handleUnhandledError(error);\n }\n }\n }\n}\n\nexport class SafeSubscriber extends Subscriber {\n constructor(\n observerOrNext?: Partial> | ((value: T) => void) | null,\n error?: ((e?: any) => void) | null,\n complete?: (() => void) | null\n ) {\n super();\n\n let partialObserver: Partial>;\n if (isFunction(observerOrNext) || !observerOrNext) {\n // The first argument is a function, not an observer. The next\n // two arguments *could* be observers, or they could be empty.\n partialObserver = {\n next: (observerOrNext ?? undefined) as (((value: T) => void) | undefined),\n error: error ?? undefined,\n complete: complete ?? undefined,\n };\n } else {\n // The first argument is a partial observer.\n let context: any;\n if (this && config.useDeprecatedNextContext) {\n // This is a deprecated path that made `this.unsubscribe()` available in\n // next handler functions passed to subscribe. This only exists behind a flag\n // now, as it is *very* slow.\n context = Object.create(observerOrNext);\n context.unsubscribe = () => this.unsubscribe();\n partialObserver = {\n next: observerOrNext.next && bind(observerOrNext.next, context),\n error: observerOrNext.error && bind(observerOrNext.error, context),\n complete: observerOrNext.complete && bind(observerOrNext.complete, context),\n };\n } else {\n // The \"normal\" path. Just use the partial observer directly.\n partialObserver = observerOrNext;\n }\n }\n\n // Wrap the partial observer to ensure it's a full observer, and\n // make sure proper error handling is accounted for.\n this.destination = new ConsumerObserver(partialObserver);\n }\n}\n\nfunction handleUnhandledError(error: any) {\n if (config.useDeprecatedSynchronousErrorHandling) {\n captureError(error);\n } else {\n // Ideal path, we report this as an unhandled error,\n // which is thrown on a new call stack.\n reportUnhandledError(error);\n }\n}\n\n/**\n * An error handler used when no error handler was supplied\n * to the SafeSubscriber -- meaning no error handler was supplied\n * do the `subscribe` call on our observable.\n * @param err The error to handle\n */\nfunction defaultErrorHandler(err: any) {\n throw err;\n}\n\n/**\n * A handler for notifications that cannot be sent to a stopped subscriber.\n * @param notification The notification being sent\n * @param subscriber The stopped subscriber\n */\nfunction handleStoppedNotification(notification: ObservableNotification, subscriber: Subscriber) {\n const { onStoppedNotification } = config;\n onStoppedNotification && timeoutProvider.setTimeout(() => onStoppedNotification(notification, subscriber));\n}\n\n/**\n * The observer used as a stub for subscriptions where the user did not\n * pass any arguments to `subscribe`. Comes with the default error handling\n * behavior.\n */\nexport const EMPTY_OBSERVER: Readonly> & { closed: true } = {\n closed: true,\n next: noop,\n error: defaultErrorHandler,\n complete: noop,\n};\n", "/**\n * Symbol.observable or a string \"@@observable\". Used for interop\n *\n * @deprecated We will no longer be exporting this symbol in upcoming versions of RxJS.\n * Instead polyfill and use Symbol.observable directly *or* use https://www.npmjs.com/package/symbol-observable\n */\nexport const observable: string | symbol = (() => (typeof Symbol === 'function' && Symbol.observable) || '@@observable')();\n", "/**\n * This function takes one parameter and just returns it. Simply put,\n * this is like `(x: T): T => x`.\n *\n * ## Examples\n *\n * This is useful in some cases when using things like `mergeMap`\n *\n * ```ts\n * import { interval, take, map, range, mergeMap, identity } from 'rxjs';\n *\n * const source$ = interval(1000).pipe(take(5));\n *\n * const result$ = source$.pipe(\n * map(i => range(i)),\n * mergeMap(identity) // same as mergeMap(x => x)\n * );\n *\n * result$.subscribe({\n * next: console.log\n * });\n * ```\n *\n * Or when you want to selectively apply an operator\n *\n * ```ts\n * import { interval, take, identity } from 'rxjs';\n *\n * const shouldLimit = () => Math.random() < 0.5;\n *\n * const source$ = interval(1000);\n *\n * const result$ = source$.pipe(shouldLimit() ? take(5) : identity);\n *\n * result$.subscribe({\n * next: console.log\n * });\n * ```\n *\n * @param x Any value that is returned by this function\n * @returns The value passed as the first parameter to this function\n */\nexport function identity(x: T): T {\n return x;\n}\n", "import { identity } from './identity';\nimport { UnaryFunction } from '../types';\n\nexport function pipe(): typeof identity;\nexport function pipe(fn1: UnaryFunction): UnaryFunction;\nexport function pipe(fn1: UnaryFunction, fn2: UnaryFunction): UnaryFunction;\nexport function pipe(fn1: UnaryFunction, fn2: UnaryFunction, fn3: UnaryFunction): UnaryFunction;\nexport function pipe(\n fn1: UnaryFunction,\n fn2: UnaryFunction,\n fn3: UnaryFunction,\n fn4: UnaryFunction\n): UnaryFunction;\nexport function pipe(\n fn1: UnaryFunction,\n fn2: UnaryFunction,\n fn3: UnaryFunction,\n fn4: UnaryFunction,\n fn5: UnaryFunction\n): UnaryFunction;\nexport function pipe(\n fn1: UnaryFunction,\n fn2: UnaryFunction,\n fn3: UnaryFunction,\n fn4: UnaryFunction,\n fn5: UnaryFunction,\n fn6: UnaryFunction\n): UnaryFunction;\nexport function pipe(\n fn1: UnaryFunction,\n fn2: UnaryFunction,\n fn3: UnaryFunction,\n fn4: UnaryFunction,\n fn5: UnaryFunction,\n fn6: UnaryFunction,\n fn7: UnaryFunction\n): UnaryFunction;\nexport function pipe(\n fn1: UnaryFunction,\n fn2: UnaryFunction,\n fn3: UnaryFunction,\n fn4: UnaryFunction,\n fn5: UnaryFunction,\n fn6: UnaryFunction,\n fn7: UnaryFunction,\n fn8: UnaryFunction\n): UnaryFunction;\nexport function pipe(\n fn1: UnaryFunction,\n fn2: UnaryFunction,\n fn3: UnaryFunction,\n fn4: UnaryFunction,\n fn5: UnaryFunction,\n fn6: UnaryFunction,\n fn7: UnaryFunction,\n fn8: UnaryFunction,\n fn9: UnaryFunction\n): UnaryFunction;\nexport function pipe(\n fn1: UnaryFunction,\n fn2: UnaryFunction,\n fn3: UnaryFunction,\n fn4: UnaryFunction,\n fn5: UnaryFunction,\n fn6: UnaryFunction,\n fn7: UnaryFunction,\n fn8: UnaryFunction,\n fn9: UnaryFunction,\n ...fns: UnaryFunction[]\n): UnaryFunction;\n\n/**\n * pipe() can be called on one or more functions, each of which can take one argument (\"UnaryFunction\")\n * and uses it to return a value.\n * It returns a function that takes one argument, passes it to the first UnaryFunction, and then\n * passes the result to the next one, passes that result to the next one, and so on. \n */\nexport function pipe(...fns: Array>): UnaryFunction {\n return pipeFromArray(fns);\n}\n\n/** @internal */\nexport function pipeFromArray(fns: Array>): UnaryFunction {\n if (fns.length === 0) {\n return identity as UnaryFunction;\n }\n\n if (fns.length === 1) {\n return fns[0];\n }\n\n return function piped(input: T): R {\n return fns.reduce((prev: any, fn: UnaryFunction) => fn(prev), input as any);\n };\n}\n", "import { Operator } from './Operator';\nimport { SafeSubscriber, Subscriber } from './Subscriber';\nimport { isSubscription, Subscription } from './Subscription';\nimport { TeardownLogic, OperatorFunction, Subscribable, Observer } from './types';\nimport { observable as Symbol_observable } from './symbol/observable';\nimport { pipeFromArray } from './util/pipe';\nimport { config } from './config';\nimport { isFunction } from './util/isFunction';\nimport { errorContext } from './util/errorContext';\n\n/**\n * A representation of any set of values over any amount of time. This is the most basic building block\n * of RxJS.\n *\n * @class Observable\n */\nexport class Observable implements Subscribable {\n /**\n * @deprecated Internal implementation detail, do not use directly. Will be made internal in v8.\n */\n source: Observable | undefined;\n\n /**\n * @deprecated Internal implementation detail, do not use directly. Will be made internal in v8.\n */\n operator: Operator | undefined;\n\n /**\n * @constructor\n * @param {Function} subscribe the function that is called when the Observable is\n * initially subscribed to. This function is given a Subscriber, to which new values\n * can be `next`ed, or an `error` method can be called to raise an error, or\n * `complete` can be called to notify of a successful completion.\n */\n constructor(subscribe?: (this: Observable, subscriber: Subscriber) => TeardownLogic) {\n if (subscribe) {\n this._subscribe = subscribe;\n }\n }\n\n // HACK: Since TypeScript inherits static properties too, we have to\n // fight against TypeScript here so Subject can have a different static create signature\n /**\n * Creates a new Observable by calling the Observable constructor\n * @owner Observable\n * @method create\n * @param {Function} subscribe? the subscriber function to be passed to the Observable constructor\n * @return {Observable} a new observable\n * @nocollapse\n * @deprecated Use `new Observable()` instead. Will be removed in v8.\n */\n static create: (...args: any[]) => any = (subscribe?: (subscriber: Subscriber) => TeardownLogic) => {\n return new Observable(subscribe);\n };\n\n /**\n * Creates a new Observable, with this Observable instance as the source, and the passed\n * operator defined as the new observable's operator.\n * @method lift\n * @param operator the operator defining the operation to take on the observable\n * @return a new observable with the Operator applied\n * @deprecated Internal implementation detail, do not use directly. Will be made internal in v8.\n * If you have implemented an operator using `lift`, it is recommended that you create an\n * operator by simply returning `new Observable()` directly. See \"Creating new operators from\n * scratch\" section here: https://rxjs.dev/guide/operators\n */\n lift(operator?: Operator): Observable {\n const observable = new Observable();\n observable.source = this;\n observable.operator = operator;\n return observable;\n }\n\n subscribe(observerOrNext?: Partial> | ((value: T) => void)): Subscription;\n /** @deprecated Instead of passing separate callback arguments, use an observer argument. Signatures taking separate callback arguments will be removed in v8. Details: https://rxjs.dev/deprecations/subscribe-arguments */\n subscribe(next?: ((value: T) => void) | null, error?: ((error: any) => void) | null, complete?: (() => void) | null): Subscription;\n /**\n * Invokes an execution of an Observable and registers Observer handlers for notifications it will emit.\n *\n * Use it when you have all these Observables, but still nothing is happening.\n *\n * `subscribe` is not a regular operator, but a method that calls Observable's internal `subscribe` function. It\n * might be for example a function that you passed to Observable's constructor, but most of the time it is\n * a library implementation, which defines what will be emitted by an Observable, and when it be will emitted. This means\n * that calling `subscribe` is actually the moment when Observable starts its work, not when it is created, as it is often\n * the thought.\n *\n * Apart from starting the execution of an Observable, this method allows you to listen for values\n * that an Observable emits, as well as for when it completes or errors. You can achieve this in two\n * of the following ways.\n *\n * The first way is creating an object that implements {@link Observer} interface. It should have methods\n * defined by that interface, but note that it should be just a regular JavaScript object, which you can create\n * yourself in any way you want (ES6 class, classic function constructor, object literal etc.). In particular, do\n * not attempt to use any RxJS implementation details to create Observers - you don't need them. Remember also\n * that your object does not have to implement all methods. If you find yourself creating a method that doesn't\n * do anything, you can simply omit it. Note however, if the `error` method is not provided and an error happens,\n * it will be thrown asynchronously. Errors thrown asynchronously cannot be caught using `try`/`catch`. Instead,\n * use the {@link onUnhandledError} configuration option or use a runtime handler (like `window.onerror` or\n * `process.on('error)`) to be notified of unhandled errors. Because of this, it's recommended that you provide\n * an `error` method to avoid missing thrown errors.\n *\n * The second way is to give up on Observer object altogether and simply provide callback functions in place of its methods.\n * This means you can provide three functions as arguments to `subscribe`, where the first function is equivalent\n * of a `next` method, the second of an `error` method and the third of a `complete` method. Just as in case of an Observer,\n * if you do not need to listen for something, you can omit a function by passing `undefined` or `null`,\n * since `subscribe` recognizes these functions by where they were placed in function call. When it comes\n * to the `error` function, as with an Observer, if not provided, errors emitted by an Observable will be thrown asynchronously.\n *\n * You can, however, subscribe with no parameters at all. This may be the case where you're not interested in terminal events\n * and you also handled emissions internally by using operators (e.g. using `tap`).\n *\n * Whichever style of calling `subscribe` you use, in both cases it returns a Subscription object.\n * This object allows you to call `unsubscribe` on it, which in turn will stop the work that an Observable does and will clean\n * up all resources that an Observable used. Note that cancelling a subscription will not call `complete` callback\n * provided to `subscribe` function, which is reserved for a regular completion signal that comes from an Observable.\n *\n * Remember that callbacks provided to `subscribe` are not guaranteed to be called asynchronously.\n * It is an Observable itself that decides when these functions will be called. For example {@link of}\n * by default emits all its values synchronously. Always check documentation for how given Observable\n * will behave when subscribed and if its default behavior can be modified with a `scheduler`.\n *\n * #### Examples\n *\n * Subscribe with an {@link guide/observer Observer}\n *\n * ```ts\n * import { of } from 'rxjs';\n *\n * const sumObserver = {\n * sum: 0,\n * next(value) {\n * console.log('Adding: ' + value);\n * this.sum = this.sum + value;\n * },\n * error() {\n * // We actually could just remove this method,\n * // since we do not really care about errors right now.\n * },\n * complete() {\n * console.log('Sum equals: ' + this.sum);\n * }\n * };\n *\n * of(1, 2, 3) // Synchronously emits 1, 2, 3 and then completes.\n * .subscribe(sumObserver);\n *\n * // Logs:\n * // 'Adding: 1'\n * // 'Adding: 2'\n * // 'Adding: 3'\n * // 'Sum equals: 6'\n * ```\n *\n * Subscribe with functions ({@link deprecations/subscribe-arguments deprecated})\n *\n * ```ts\n * import { of } from 'rxjs'\n *\n * let sum = 0;\n *\n * of(1, 2, 3).subscribe(\n * value => {\n * console.log('Adding: ' + value);\n * sum = sum + value;\n * },\n * undefined,\n * () => console.log('Sum equals: ' + sum)\n * );\n *\n * // Logs:\n * // 'Adding: 1'\n * // 'Adding: 2'\n * // 'Adding: 3'\n * // 'Sum equals: 6'\n * ```\n *\n * Cancel a subscription\n *\n * ```ts\n * import { interval } from 'rxjs';\n *\n * const subscription = interval(1000).subscribe({\n * next(num) {\n * console.log(num)\n * },\n * complete() {\n * // Will not be called, even when cancelling subscription.\n * console.log('completed!');\n * }\n * });\n *\n * setTimeout(() => {\n * subscription.unsubscribe();\n * console.log('unsubscribed!');\n * }, 2500);\n *\n * // Logs:\n * // 0 after 1s\n * // 1 after 2s\n * // 'unsubscribed!' after 2.5s\n * ```\n *\n * @param {Observer|Function} observerOrNext (optional) Either an observer with methods to be called,\n * or the first of three possible handlers, which is the handler for each value emitted from the subscribed\n * Observable.\n * @param {Function} error (optional) A handler for a terminal event resulting from an error. If no error handler is provided,\n * the error will be thrown asynchronously as unhandled.\n * @param {Function} complete (optional) A handler for a terminal event resulting from successful completion.\n * @return {Subscription} a subscription reference to the registered handlers\n * @method subscribe\n */\n subscribe(\n observerOrNext?: Partial> | ((value: T) => void) | null,\n error?: ((error: any) => void) | null,\n complete?: (() => void) | null\n ): Subscription {\n const subscriber = isSubscriber(observerOrNext) ? observerOrNext : new SafeSubscriber(observerOrNext, error, complete);\n\n errorContext(() => {\n const { operator, source } = this;\n subscriber.add(\n operator\n ? // We're dealing with a subscription in the\n // operator chain to one of our lifted operators.\n operator.call(subscriber, source)\n : source\n ? // If `source` has a value, but `operator` does not, something that\n // had intimate knowledge of our API, like our `Subject`, must have\n // set it. We're going to just call `_subscribe` directly.\n this._subscribe(subscriber)\n : // In all other cases, we're likely wrapping a user-provided initializer\n // function, so we need to catch errors and handle them appropriately.\n this._trySubscribe(subscriber)\n );\n });\n\n return subscriber;\n }\n\n /** @internal */\n protected _trySubscribe(sink: Subscriber): TeardownLogic {\n try {\n return this._subscribe(sink);\n } catch (err) {\n // We don't need to return anything in this case,\n // because it's just going to try to `add()` to a subscription\n // above.\n sink.error(err);\n }\n }\n\n /**\n * Used as a NON-CANCELLABLE means of subscribing to an observable, for use with\n * APIs that expect promises, like `async/await`. You cannot unsubscribe from this.\n *\n * **WARNING**: Only use this with observables you *know* will complete. If the source\n * observable does not complete, you will end up with a promise that is hung up, and\n * potentially all of the state of an async function hanging out in memory. To avoid\n * this situation, look into adding something like {@link timeout}, {@link take},\n * {@link takeWhile}, or {@link takeUntil} amongst others.\n *\n * #### Example\n *\n * ```ts\n * import { interval, take } from 'rxjs';\n *\n * const source$ = interval(1000).pipe(take(4));\n *\n * async function getTotal() {\n * let total = 0;\n *\n * await source$.forEach(value => {\n * total += value;\n * console.log('observable -> ' + value);\n * });\n *\n * return total;\n * }\n *\n * getTotal().then(\n * total => console.log('Total: ' + total)\n * );\n *\n * // Expected:\n * // 'observable -> 0'\n * // 'observable -> 1'\n * // 'observable -> 2'\n * // 'observable -> 3'\n * // 'Total: 6'\n * ```\n *\n * @param next a handler for each value emitted by the observable\n * @return a promise that either resolves on observable completion or\n * rejects with the handled error\n */\n forEach(next: (value: T) => void): Promise;\n\n /**\n * @param next a handler for each value emitted by the observable\n * @param promiseCtor a constructor function used to instantiate the Promise\n * @return a promise that either resolves on observable completion or\n * rejects with the handled error\n * @deprecated Passing a Promise constructor will no longer be available\n * in upcoming versions of RxJS. This is because it adds weight to the library, for very\n * little benefit. If you need this functionality, it is recommended that you either\n * polyfill Promise, or you create an adapter to convert the returned native promise\n * to whatever promise implementation you wanted. Will be removed in v8.\n */\n forEach(next: (value: T) => void, promiseCtor: PromiseConstructorLike): Promise;\n\n forEach(next: (value: T) => void, promiseCtor?: PromiseConstructorLike): Promise {\n promiseCtor = getPromiseCtor(promiseCtor);\n\n return new promiseCtor((resolve, reject) => {\n const subscriber = new SafeSubscriber({\n next: (value) => {\n try {\n next(value);\n } catch (err) {\n reject(err);\n subscriber.unsubscribe();\n }\n },\n error: reject,\n complete: resolve,\n });\n this.subscribe(subscriber);\n }) as Promise;\n }\n\n /** @internal */\n protected _subscribe(subscriber: Subscriber): TeardownLogic {\n return this.source?.subscribe(subscriber);\n }\n\n /**\n * An interop point defined by the es7-observable spec https://github.com/zenparsing/es-observable\n * @method Symbol.observable\n * @return {Observable} this instance of the observable\n */\n [Symbol_observable]() {\n return this;\n }\n\n /* tslint:disable:max-line-length */\n pipe(): Observable;\n pipe(op1: OperatorFunction): Observable;\n pipe(op1: OperatorFunction, op2: OperatorFunction): Observable;\n pipe(op1: OperatorFunction, op2: OperatorFunction, op3: OperatorFunction): Observable;\n pipe(\n op1: OperatorFunction,\n op2: OperatorFunction,\n op3: OperatorFunction,\n op4: OperatorFunction\n ): Observable;\n pipe(\n op1: OperatorFunction,\n op2: OperatorFunction,\n op3: OperatorFunction,\n op4: OperatorFunction,\n op5: OperatorFunction\n ): Observable;\n pipe(\n op1: OperatorFunction,\n op2: OperatorFunction,\n op3: OperatorFunction,\n op4: OperatorFunction,\n op5: OperatorFunction,\n op6: OperatorFunction\n ): Observable;\n pipe(\n op1: OperatorFunction,\n op2: OperatorFunction,\n op3: OperatorFunction,\n op4: OperatorFunction,\n op5: OperatorFunction,\n op6: OperatorFunction,\n op7: OperatorFunction\n ): Observable;\n pipe(\n op1: OperatorFunction,\n op2: OperatorFunction,\n op3: OperatorFunction,\n op4: OperatorFunction,\n op5: OperatorFunction,\n op6: OperatorFunction,\n op7: OperatorFunction,\n op8: OperatorFunction\n ): Observable;\n pipe(\n op1: OperatorFunction,\n op2: OperatorFunction,\n op3: OperatorFunction,\n op4: OperatorFunction,\n op5: OperatorFunction,\n op6: OperatorFunction,\n op7: OperatorFunction,\n op8: OperatorFunction,\n op9: OperatorFunction\n ): Observable;\n pipe(\n op1: OperatorFunction,\n op2: OperatorFunction,\n op3: OperatorFunction,\n op4: OperatorFunction,\n op5: OperatorFunction,\n op6: OperatorFunction,\n op7: OperatorFunction,\n op8: OperatorFunction,\n op9: OperatorFunction,\n ...operations: OperatorFunction[]\n ): Observable;\n /* tslint:enable:max-line-length */\n\n /**\n * Used to stitch together functional operators into a chain.\n * @method pipe\n * @return {Observable} the Observable result of all of the operators having\n * been called in the order they were passed in.\n *\n * ## Example\n *\n * ```ts\n * import { interval, filter, map, scan } from 'rxjs';\n *\n * interval(1000)\n * .pipe(\n * filter(x => x % 2 === 0),\n * map(x => x + x),\n * scan((acc, x) => acc + x)\n * )\n * .subscribe(x => console.log(x));\n * ```\n */\n pipe(...operations: OperatorFunction[]): Observable {\n return pipeFromArray(operations)(this);\n }\n\n /* tslint:disable:max-line-length */\n /** @deprecated Replaced with {@link firstValueFrom} and {@link lastValueFrom}. Will be removed in v8. Details: https://rxjs.dev/deprecations/to-promise */\n toPromise(): Promise;\n /** @deprecated Replaced with {@link firstValueFrom} and {@link lastValueFrom}. Will be removed in v8. Details: https://rxjs.dev/deprecations/to-promise */\n toPromise(PromiseCtor: typeof Promise): Promise;\n /** @deprecated Replaced with {@link firstValueFrom} and {@link lastValueFrom}. Will be removed in v8. Details: https://rxjs.dev/deprecations/to-promise */\n toPromise(PromiseCtor: PromiseConstructorLike): Promise;\n /* tslint:enable:max-line-length */\n\n /**\n * Subscribe to this Observable and get a Promise resolving on\n * `complete` with the last emission (if any).\n *\n * **WARNING**: Only use this with observables you *know* will complete. If the source\n * observable does not complete, you will end up with a promise that is hung up, and\n * potentially all of the state of an async function hanging out in memory. To avoid\n * this situation, look into adding something like {@link timeout}, {@link take},\n * {@link takeWhile}, or {@link takeUntil} amongst others.\n *\n * @method toPromise\n * @param [promiseCtor] a constructor function used to instantiate\n * the Promise\n * @return A Promise that resolves with the last value emit, or\n * rejects on an error. If there were no emissions, Promise\n * resolves with undefined.\n * @deprecated Replaced with {@link firstValueFrom} and {@link lastValueFrom}. Will be removed in v8. Details: https://rxjs.dev/deprecations/to-promise\n */\n toPromise(promiseCtor?: PromiseConstructorLike): Promise {\n promiseCtor = getPromiseCtor(promiseCtor);\n\n return new promiseCtor((resolve, reject) => {\n let value: T | undefined;\n this.subscribe(\n (x: T) => (value = x),\n (err: any) => reject(err),\n () => resolve(value)\n );\n }) as Promise;\n }\n}\n\n/**\n * Decides between a passed promise constructor from consuming code,\n * A default configured promise constructor, and the native promise\n * constructor and returns it. If nothing can be found, it will throw\n * an error.\n * @param promiseCtor The optional promise constructor to passed by consuming code\n */\nfunction getPromiseCtor(promiseCtor: PromiseConstructorLike | undefined) {\n return promiseCtor ?? config.Promise ?? Promise;\n}\n\nfunction isObserver(value: any): value is Observer {\n return value && isFunction(value.next) && isFunction(value.error) && isFunction(value.complete);\n}\n\nfunction isSubscriber(value: any): value is Subscriber {\n return (value && value instanceof Subscriber) || (isObserver(value) && isSubscription(value));\n}\n", "import { Observable } from '../Observable';\nimport { Subscriber } from '../Subscriber';\nimport { OperatorFunction } from '../types';\nimport { isFunction } from './isFunction';\n\n/**\n * Used to determine if an object is an Observable with a lift function.\n */\nexport function hasLift(source: any): source is { lift: InstanceType['lift'] } {\n return isFunction(source?.lift);\n}\n\n/**\n * Creates an `OperatorFunction`. Used to define operators throughout the library in a concise way.\n * @param init The logic to connect the liftedSource to the subscriber at the moment of subscription.\n */\nexport function operate(\n init: (liftedSource: Observable, subscriber: Subscriber) => (() => void) | void\n): OperatorFunction {\n return (source: Observable) => {\n if (hasLift(source)) {\n return source.lift(function (this: Subscriber, liftedSource: Observable) {\n try {\n return init(liftedSource, this);\n } catch (err) {\n this.error(err);\n }\n });\n }\n throw new TypeError('Unable to lift unknown Observable type');\n };\n}\n", "import { Subscriber } from '../Subscriber';\n\n/**\n * Creates an instance of an `OperatorSubscriber`.\n * @param destination The downstream subscriber.\n * @param onNext Handles next values, only called if this subscriber is not stopped or closed. Any\n * error that occurs in this function is caught and sent to the `error` method of this subscriber.\n * @param onError Handles errors from the subscription, any errors that occur in this handler are caught\n * and send to the `destination` error handler.\n * @param onComplete Handles completion notification from the subscription. Any errors that occur in\n * this handler are sent to the `destination` error handler.\n * @param onFinalize Additional teardown logic here. This will only be called on teardown if the\n * subscriber itself is not already closed. This is called after all other teardown logic is executed.\n */\nexport function createOperatorSubscriber(\n destination: Subscriber,\n onNext?: (value: T) => void,\n onComplete?: () => void,\n onError?: (err: any) => void,\n onFinalize?: () => void\n): Subscriber {\n return new OperatorSubscriber(destination, onNext, onComplete, onError, onFinalize);\n}\n\n/**\n * A generic helper for allowing operators to be created with a Subscriber and\n * use closures to capture necessary state from the operator function itself.\n */\nexport class OperatorSubscriber extends Subscriber {\n /**\n * Creates an instance of an `OperatorSubscriber`.\n * @param destination The downstream subscriber.\n * @param onNext Handles next values, only called if this subscriber is not stopped or closed. Any\n * error that occurs in this function is caught and sent to the `error` method of this subscriber.\n * @param onError Handles errors from the subscription, any errors that occur in this handler are caught\n * and send to the `destination` error handler.\n * @param onComplete Handles completion notification from the subscription. Any errors that occur in\n * this handler are sent to the `destination` error handler.\n * @param onFinalize Additional finalization logic here. This will only be called on finalization if the\n * subscriber itself is not already closed. This is called after all other finalization logic is executed.\n * @param shouldUnsubscribe An optional check to see if an unsubscribe call should truly unsubscribe.\n * NOTE: This currently **ONLY** exists to support the strange behavior of {@link groupBy}, where unsubscription\n * to the resulting observable does not actually disconnect from the source if there are active subscriptions\n * to any grouped observable. (DO NOT EXPOSE OR USE EXTERNALLY!!!)\n */\n constructor(\n destination: Subscriber,\n onNext?: (value: T) => void,\n onComplete?: () => void,\n onError?: (err: any) => void,\n private onFinalize?: () => void,\n private shouldUnsubscribe?: () => boolean\n ) {\n // It's important - for performance reasons - that all of this class's\n // members are initialized and that they are always initialized in the same\n // order. This will ensure that all OperatorSubscriber instances have the\n // same hidden class in V8. This, in turn, will help keep the number of\n // hidden classes involved in property accesses within the base class as\n // low as possible. If the number of hidden classes involved exceeds four,\n // the property accesses will become megamorphic and performance penalties\n // will be incurred - i.e. inline caches won't be used.\n //\n // The reasons for ensuring all instances have the same hidden class are\n // further discussed in this blog post from Benedikt Meurer:\n // https://benediktmeurer.de/2018/03/23/impact-of-polymorphism-on-component-based-frameworks-like-react/\n super(destination);\n this._next = onNext\n ? function (this: OperatorSubscriber, value: T) {\n try {\n onNext(value);\n } catch (err) {\n destination.error(err);\n }\n }\n : super._next;\n this._error = onError\n ? function (this: OperatorSubscriber, err: any) {\n try {\n onError(err);\n } catch (err) {\n // Send any errors that occur down stream.\n destination.error(err);\n } finally {\n // Ensure finalization.\n this.unsubscribe();\n }\n }\n : super._error;\n this._complete = onComplete\n ? function (this: OperatorSubscriber) {\n try {\n onComplete();\n } catch (err) {\n // Send any errors that occur down stream.\n destination.error(err);\n } finally {\n // Ensure finalization.\n this.unsubscribe();\n }\n }\n : super._complete;\n }\n\n unsubscribe() {\n if (!this.shouldUnsubscribe || this.shouldUnsubscribe()) {\n const { closed } = this;\n super.unsubscribe();\n // Execute additional teardown if we have any and we didn't already do so.\n !closed && this.onFinalize?.();\n }\n }\n}\n", "import { Subscription } from '../Subscription';\n\ninterface AnimationFrameProvider {\n schedule(callback: FrameRequestCallback): Subscription;\n requestAnimationFrame: typeof requestAnimationFrame;\n cancelAnimationFrame: typeof cancelAnimationFrame;\n delegate:\n | {\n requestAnimationFrame: typeof requestAnimationFrame;\n cancelAnimationFrame: typeof cancelAnimationFrame;\n }\n | undefined;\n}\n\nexport const animationFrameProvider: AnimationFrameProvider = {\n // When accessing the delegate, use the variable rather than `this` so that\n // the functions can be called without being bound to the provider.\n schedule(callback) {\n let request = requestAnimationFrame;\n let cancel: typeof cancelAnimationFrame | undefined = cancelAnimationFrame;\n const { delegate } = animationFrameProvider;\n if (delegate) {\n request = delegate.requestAnimationFrame;\n cancel = delegate.cancelAnimationFrame;\n }\n const handle = request((timestamp) => {\n // Clear the cancel function. The request has been fulfilled, so\n // attempting to cancel the request upon unsubscription would be\n // pointless.\n cancel = undefined;\n callback(timestamp);\n });\n return new Subscription(() => cancel?.(handle));\n },\n requestAnimationFrame(...args) {\n const { delegate } = animationFrameProvider;\n return (delegate?.requestAnimationFrame || requestAnimationFrame)(...args);\n },\n cancelAnimationFrame(...args) {\n const { delegate } = animationFrameProvider;\n return (delegate?.cancelAnimationFrame || cancelAnimationFrame)(...args);\n },\n delegate: undefined,\n};\n", "import { createErrorClass } from './createErrorClass';\n\nexport interface ObjectUnsubscribedError extends Error {}\n\nexport interface ObjectUnsubscribedErrorCtor {\n /**\n * @deprecated Internal implementation detail. Do not construct error instances.\n * Cannot be tagged as internal: https://github.com/ReactiveX/rxjs/issues/6269\n */\n new (): ObjectUnsubscribedError;\n}\n\n/**\n * An error thrown when an action is invalid because the object has been\n * unsubscribed.\n *\n * @see {@link Subject}\n * @see {@link BehaviorSubject}\n *\n * @class ObjectUnsubscribedError\n */\nexport const ObjectUnsubscribedError: ObjectUnsubscribedErrorCtor = createErrorClass(\n (_super) =>\n function ObjectUnsubscribedErrorImpl(this: any) {\n _super(this);\n this.name = 'ObjectUnsubscribedError';\n this.message = 'object unsubscribed';\n }\n);\n", "import { Operator } from './Operator';\nimport { Observable } from './Observable';\nimport { Subscriber } from './Subscriber';\nimport { Subscription, EMPTY_SUBSCRIPTION } from './Subscription';\nimport { Observer, SubscriptionLike, TeardownLogic } from './types';\nimport { ObjectUnsubscribedError } from './util/ObjectUnsubscribedError';\nimport { arrRemove } from './util/arrRemove';\nimport { errorContext } from './util/errorContext';\n\n/**\n * A Subject is a special type of Observable that allows values to be\n * multicasted to many Observers. Subjects are like EventEmitters.\n *\n * Every Subject is an Observable and an Observer. You can subscribe to a\n * Subject, and you can call next to feed values as well as error and complete.\n */\nexport class Subject extends Observable implements SubscriptionLike {\n closed = false;\n\n private currentObservers: Observer[] | null = null;\n\n /** @deprecated Internal implementation detail, do not use directly. Will be made internal in v8. */\n observers: Observer[] = [];\n /** @deprecated Internal implementation detail, do not use directly. Will be made internal in v8. */\n isStopped = false;\n /** @deprecated Internal implementation detail, do not use directly. Will be made internal in v8. */\n hasError = false;\n /** @deprecated Internal implementation detail, do not use directly. Will be made internal in v8. */\n thrownError: any = null;\n\n /**\n * Creates a \"subject\" by basically gluing an observer to an observable.\n *\n * @nocollapse\n * @deprecated Recommended you do not use. Will be removed at some point in the future. Plans for replacement still under discussion.\n */\n static create: (...args: any[]) => any = (destination: Observer, source: Observable): AnonymousSubject => {\n return new AnonymousSubject(destination, source);\n };\n\n constructor() {\n // NOTE: This must be here to obscure Observable's constructor.\n super();\n }\n\n /** @deprecated Internal implementation detail, do not use directly. Will be made internal in v8. */\n lift(operator: Operator): Observable {\n const subject = new AnonymousSubject(this, this);\n subject.operator = operator as any;\n return subject as any;\n }\n\n /** @internal */\n protected _throwIfClosed() {\n if (this.closed) {\n throw new ObjectUnsubscribedError();\n }\n }\n\n next(value: T) {\n errorContext(() => {\n this._throwIfClosed();\n if (!this.isStopped) {\n if (!this.currentObservers) {\n this.currentObservers = Array.from(this.observers);\n }\n for (const observer of this.currentObservers) {\n observer.next(value);\n }\n }\n });\n }\n\n error(err: any) {\n errorContext(() => {\n this._throwIfClosed();\n if (!this.isStopped) {\n this.hasError = this.isStopped = true;\n this.thrownError = err;\n const { observers } = this;\n while (observers.length) {\n observers.shift()!.error(err);\n }\n }\n });\n }\n\n complete() {\n errorContext(() => {\n this._throwIfClosed();\n if (!this.isStopped) {\n this.isStopped = true;\n const { observers } = this;\n while (observers.length) {\n observers.shift()!.complete();\n }\n }\n });\n }\n\n unsubscribe() {\n this.isStopped = this.closed = true;\n this.observers = this.currentObservers = null!;\n }\n\n get observed() {\n return this.observers?.length > 0;\n }\n\n /** @internal */\n protected _trySubscribe(subscriber: Subscriber): TeardownLogic {\n this._throwIfClosed();\n return super._trySubscribe(subscriber);\n }\n\n /** @internal */\n protected _subscribe(subscriber: Subscriber): Subscription {\n this._throwIfClosed();\n this._checkFinalizedStatuses(subscriber);\n return this._innerSubscribe(subscriber);\n }\n\n /** @internal */\n protected _innerSubscribe(subscriber: Subscriber) {\n const { hasError, isStopped, observers } = this;\n if (hasError || isStopped) {\n return EMPTY_SUBSCRIPTION;\n }\n this.currentObservers = null;\n observers.push(subscriber);\n return new Subscription(() => {\n this.currentObservers = null;\n arrRemove(observers, subscriber);\n });\n }\n\n /** @internal */\n protected _checkFinalizedStatuses(subscriber: Subscriber) {\n const { hasError, thrownError, isStopped } = this;\n if (hasError) {\n subscriber.error(thrownError);\n } else if (isStopped) {\n subscriber.complete();\n }\n }\n\n /**\n * Creates a new Observable with this Subject as the source. You can do this\n * to create custom Observer-side logic of the Subject and conceal it from\n * code that uses the Observable.\n * @return {Observable} Observable that the Subject casts to\n */\n asObservable(): Observable {\n const observable: any = new Observable();\n observable.source = this;\n return observable;\n }\n}\n\n/**\n * @class AnonymousSubject\n */\nexport class AnonymousSubject extends Subject {\n constructor(\n /** @deprecated Internal implementation detail, do not use directly. Will be made internal in v8. */\n public destination?: Observer,\n source?: Observable\n ) {\n super();\n this.source = source;\n }\n\n next(value: T) {\n this.destination?.next?.(value);\n }\n\n error(err: any) {\n this.destination?.error?.(err);\n }\n\n complete() {\n this.destination?.complete?.();\n }\n\n /** @internal */\n protected _subscribe(subscriber: Subscriber): Subscription {\n return this.source?.subscribe(subscriber) ?? EMPTY_SUBSCRIPTION;\n }\n}\n", "import { TimestampProvider } from '../types';\n\ninterface DateTimestampProvider extends TimestampProvider {\n delegate: TimestampProvider | undefined;\n}\n\nexport const dateTimestampProvider: DateTimestampProvider = {\n now() {\n // Use the variable rather than `this` so that the function can be called\n // without being bound to the provider.\n return (dateTimestampProvider.delegate || Date).now();\n },\n delegate: undefined,\n};\n", "import { Subject } from './Subject';\nimport { TimestampProvider } from './types';\nimport { Subscriber } from './Subscriber';\nimport { Subscription } from './Subscription';\nimport { dateTimestampProvider } from './scheduler/dateTimestampProvider';\n\n/**\n * A variant of {@link Subject} that \"replays\" old values to new subscribers by emitting them when they first subscribe.\n *\n * `ReplaySubject` has an internal buffer that will store a specified number of values that it has observed. Like `Subject`,\n * `ReplaySubject` \"observes\" values by having them passed to its `next` method. When it observes a value, it will store that\n * value for a time determined by the configuration of the `ReplaySubject`, as passed to its constructor.\n *\n * When a new subscriber subscribes to the `ReplaySubject` instance, it will synchronously emit all values in its buffer in\n * a First-In-First-Out (FIFO) manner. The `ReplaySubject` will also complete, if it has observed completion; and it will\n * error if it has observed an error.\n *\n * There are two main configuration items to be concerned with:\n *\n * 1. `bufferSize` - This will determine how many items are stored in the buffer, defaults to infinite.\n * 2. `windowTime` - The amount of time to hold a value in the buffer before removing it from the buffer.\n *\n * Both configurations may exist simultaneously. So if you would like to buffer a maximum of 3 values, as long as the values\n * are less than 2 seconds old, you could do so with a `new ReplaySubject(3, 2000)`.\n *\n * ### Differences with BehaviorSubject\n *\n * `BehaviorSubject` is similar to `new ReplaySubject(1)`, with a couple of exceptions:\n *\n * 1. `BehaviorSubject` comes \"primed\" with a single value upon construction.\n * 2. `ReplaySubject` will replay values, even after observing an error, where `BehaviorSubject` will not.\n *\n * @see {@link Subject}\n * @see {@link BehaviorSubject}\n * @see {@link shareReplay}\n */\nexport class ReplaySubject extends Subject {\n private _buffer: (T | number)[] = [];\n private _infiniteTimeWindow = true;\n\n /**\n * @param bufferSize The size of the buffer to replay on subscription\n * @param windowTime The amount of time the buffered items will stay buffered\n * @param timestampProvider An object with a `now()` method that provides the current timestamp. This is used to\n * calculate the amount of time something has been buffered.\n */\n constructor(\n private _bufferSize = Infinity,\n private _windowTime = Infinity,\n private _timestampProvider: TimestampProvider = dateTimestampProvider\n ) {\n super();\n this._infiniteTimeWindow = _windowTime === Infinity;\n this._bufferSize = Math.max(1, _bufferSize);\n this._windowTime = Math.max(1, _windowTime);\n }\n\n next(value: T): void {\n const { isStopped, _buffer, _infiniteTimeWindow, _timestampProvider, _windowTime } = this;\n if (!isStopped) {\n _buffer.push(value);\n !_infiniteTimeWindow && _buffer.push(_timestampProvider.now() + _windowTime);\n }\n this._trimBuffer();\n super.next(value);\n }\n\n /** @internal */\n protected _subscribe(subscriber: Subscriber): Subscription {\n this._throwIfClosed();\n this._trimBuffer();\n\n const subscription = this._innerSubscribe(subscriber);\n\n const { _infiniteTimeWindow, _buffer } = this;\n // We use a copy here, so reentrant code does not mutate our array while we're\n // emitting it to a new subscriber.\n const copy = _buffer.slice();\n for (let i = 0; i < copy.length && !subscriber.closed; i += _infiniteTimeWindow ? 1 : 2) {\n subscriber.next(copy[i] as T);\n }\n\n this._checkFinalizedStatuses(subscriber);\n\n return subscription;\n }\n\n private _trimBuffer() {\n const { _bufferSize, _timestampProvider, _buffer, _infiniteTimeWindow } = this;\n // If we don't have an infinite buffer size, and we're over the length,\n // use splice to truncate the old buffer values off. Note that we have to\n // double the size for instances where we're not using an infinite time window\n // because we're storing the values and the timestamps in the same array.\n const adjustedBufferSize = (_infiniteTimeWindow ? 1 : 2) * _bufferSize;\n _bufferSize < Infinity && adjustedBufferSize < _buffer.length && _buffer.splice(0, _buffer.length - adjustedBufferSize);\n\n // Now, if we're not in an infinite time window, remove all values where the time is\n // older than what is allowed.\n if (!_infiniteTimeWindow) {\n const now = _timestampProvider.now();\n let last = 0;\n // Search the array for the first timestamp that isn't expired and\n // truncate the buffer up to that point.\n for (let i = 1; i < _buffer.length && (_buffer[i] as number) <= now; i += 2) {\n last = i;\n }\n last && _buffer.splice(0, last + 1);\n }\n }\n}\n", "import { Scheduler } from '../Scheduler';\nimport { Subscription } from '../Subscription';\nimport { SchedulerAction } from '../types';\n\n/**\n * A unit of work to be executed in a `scheduler`. An action is typically\n * created from within a {@link SchedulerLike} and an RxJS user does not need to concern\n * themselves about creating and manipulating an Action.\n *\n * ```ts\n * class Action extends Subscription {\n * new (scheduler: Scheduler, work: (state?: T) => void);\n * schedule(state?: T, delay: number = 0): Subscription;\n * }\n * ```\n *\n * @class Action\n */\nexport class Action extends Subscription {\n constructor(scheduler: Scheduler, work: (this: SchedulerAction, state?: T) => void) {\n super();\n }\n /**\n * Schedules this action on its parent {@link SchedulerLike} for execution. May be passed\n * some context object, `state`. May happen at some point in the future,\n * according to the `delay` parameter, if specified.\n * @param {T} [state] Some contextual data that the `work` function uses when\n * called by the Scheduler.\n * @param {number} [delay] Time to wait before executing the work, where the\n * time unit is implicit and defined by the Scheduler.\n * @return {void}\n */\n public schedule(state?: T, delay: number = 0): Subscription {\n return this;\n }\n}\n", "import type { TimerHandle } from './timerHandle';\ntype SetIntervalFunction = (handler: () => void, timeout?: number, ...args: any[]) => TimerHandle;\ntype ClearIntervalFunction = (handle: TimerHandle) => void;\n\ninterface IntervalProvider {\n setInterval: SetIntervalFunction;\n clearInterval: ClearIntervalFunction;\n delegate:\n | {\n setInterval: SetIntervalFunction;\n clearInterval: ClearIntervalFunction;\n }\n | undefined;\n}\n\nexport const intervalProvider: IntervalProvider = {\n // When accessing the delegate, use the variable rather than `this` so that\n // the functions can be called without being bound to the provider.\n setInterval(handler: () => void, timeout?: number, ...args) {\n const { delegate } = intervalProvider;\n if (delegate?.setInterval) {\n return delegate.setInterval(handler, timeout, ...args);\n }\n return setInterval(handler, timeout, ...args);\n },\n clearInterval(handle) {\n const { delegate } = intervalProvider;\n return (delegate?.clearInterval || clearInterval)(handle as any);\n },\n delegate: undefined,\n};\n", "import { Action } from './Action';\nimport { SchedulerAction } from '../types';\nimport { Subscription } from '../Subscription';\nimport { AsyncScheduler } from './AsyncScheduler';\nimport { intervalProvider } from './intervalProvider';\nimport { arrRemove } from '../util/arrRemove';\nimport { TimerHandle } from './timerHandle';\n\nexport class AsyncAction extends Action {\n public id: TimerHandle | undefined;\n public state?: T;\n // @ts-ignore: Property has no initializer and is not definitely assigned\n public delay: number;\n protected pending: boolean = false;\n\n constructor(protected scheduler: AsyncScheduler, protected work: (this: SchedulerAction, state?: T) => void) {\n super(scheduler, work);\n }\n\n public schedule(state?: T, delay: number = 0): Subscription {\n if (this.closed) {\n return this;\n }\n\n // Always replace the current state with the new state.\n this.state = state;\n\n const id = this.id;\n const scheduler = this.scheduler;\n\n //\n // Important implementation note:\n //\n // Actions only execute once by default, unless rescheduled from within the\n // scheduled callback. This allows us to implement single and repeat\n // actions via the same code path, without adding API surface area, as well\n // as mimic traditional recursion but across asynchronous boundaries.\n //\n // However, JS runtimes and timers distinguish between intervals achieved by\n // serial `setTimeout` calls vs. a single `setInterval` call. An interval of\n // serial `setTimeout` calls can be individually delayed, which delays\n // scheduling the next `setTimeout`, and so on. `setInterval` attempts to\n // guarantee the interval callback will be invoked more precisely to the\n // interval period, regardless of load.\n //\n // Therefore, we use `setInterval` to schedule single and repeat actions.\n // If the action reschedules itself with the same delay, the interval is not\n // canceled. If the action doesn't reschedule, or reschedules with a\n // different delay, the interval will be canceled after scheduled callback\n // execution.\n //\n if (id != null) {\n this.id = this.recycleAsyncId(scheduler, id, delay);\n }\n\n // Set the pending flag indicating that this action has been scheduled, or\n // has recursively rescheduled itself.\n this.pending = true;\n\n this.delay = delay;\n // If this action has already an async Id, don't request a new one.\n this.id = this.id ?? this.requestAsyncId(scheduler, this.id, delay);\n\n return this;\n }\n\n protected requestAsyncId(scheduler: AsyncScheduler, _id?: TimerHandle, delay: number = 0): TimerHandle {\n return intervalProvider.setInterval(scheduler.flush.bind(scheduler, this), delay);\n }\n\n protected recycleAsyncId(_scheduler: AsyncScheduler, id?: TimerHandle, delay: number | null = 0): TimerHandle | undefined {\n // If this action is rescheduled with the same delay time, don't clear the interval id.\n if (delay != null && this.delay === delay && this.pending === false) {\n return id;\n }\n // Otherwise, if the action's delay time is different from the current delay,\n // or the action has been rescheduled before it's executed, clear the interval id\n if (id != null) {\n intervalProvider.clearInterval(id);\n }\n\n return undefined;\n }\n\n /**\n * Immediately executes this action and the `work` it contains.\n * @return {any}\n */\n public execute(state: T, delay: number): any {\n if (this.closed) {\n return new Error('executing a cancelled action');\n }\n\n this.pending = false;\n const error = this._execute(state, delay);\n if (error) {\n return error;\n } else if (this.pending === false && this.id != null) {\n // Dequeue if the action didn't reschedule itself. Don't call\n // unsubscribe(), because the action could reschedule later.\n // For example:\n // ```\n // scheduler.schedule(function doWork(counter) {\n // /* ... I'm a busy worker bee ... */\n // var originalAction = this;\n // /* wait 100ms before rescheduling the action */\n // setTimeout(function () {\n // originalAction.schedule(counter + 1);\n // }, 100);\n // }, 1000);\n // ```\n this.id = this.recycleAsyncId(this.scheduler, this.id, null);\n }\n }\n\n protected _execute(state: T, _delay: number): any {\n let errored: boolean = false;\n let errorValue: any;\n try {\n this.work(state);\n } catch (e) {\n errored = true;\n // HACK: Since code elsewhere is relying on the \"truthiness\" of the\n // return here, we can't have it return \"\" or 0 or false.\n // TODO: Clean this up when we refactor schedulers mid-version-8 or so.\n errorValue = e ? e : new Error('Scheduled action threw falsy error');\n }\n if (errored) {\n this.unsubscribe();\n return errorValue;\n }\n }\n\n unsubscribe() {\n if (!this.closed) {\n const { id, scheduler } = this;\n const { actions } = scheduler;\n\n this.work = this.state = this.scheduler = null!;\n this.pending = false;\n\n arrRemove(actions, this);\n if (id != null) {\n this.id = this.recycleAsyncId(scheduler, id, null);\n }\n\n this.delay = null!;\n super.unsubscribe();\n }\n }\n}\n", "import { Action } from './scheduler/Action';\nimport { Subscription } from './Subscription';\nimport { SchedulerLike, SchedulerAction } from './types';\nimport { dateTimestampProvider } from './scheduler/dateTimestampProvider';\n\n/**\n * An execution context and a data structure to order tasks and schedule their\n * execution. Provides a notion of (potentially virtual) time, through the\n * `now()` getter method.\n *\n * Each unit of work in a Scheduler is called an `Action`.\n *\n * ```ts\n * class Scheduler {\n * now(): number;\n * schedule(work, delay?, state?): Subscription;\n * }\n * ```\n *\n * @class Scheduler\n * @deprecated Scheduler is an internal implementation detail of RxJS, and\n * should not be used directly. Rather, create your own class and implement\n * {@link SchedulerLike}. Will be made internal in v8.\n */\nexport class Scheduler implements SchedulerLike {\n public static now: () => number = dateTimestampProvider.now;\n\n constructor(private schedulerActionCtor: typeof Action, now: () => number = Scheduler.now) {\n this.now = now;\n }\n\n /**\n * A getter method that returns a number representing the current time\n * (at the time this function was called) according to the scheduler's own\n * internal clock.\n * @return {number} A number that represents the current time. May or may not\n * have a relation to wall-clock time. May or may not refer to a time unit\n * (e.g. milliseconds).\n */\n public now: () => number;\n\n /**\n * Schedules a function, `work`, for execution. May happen at some point in\n * the future, according to the `delay` parameter, if specified. May be passed\n * some context object, `state`, which will be passed to the `work` function.\n *\n * The given arguments will be processed an stored as an Action object in a\n * queue of actions.\n *\n * @param {function(state: ?T): ?Subscription} work A function representing a\n * task, or some unit of work to be executed by the Scheduler.\n * @param {number} [delay] Time to wait before executing the work, where the\n * time unit is implicit and defined by the Scheduler itself.\n * @param {T} [state] Some contextual data that the `work` function uses when\n * called by the Scheduler.\n * @return {Subscription} A subscription in order to be able to unsubscribe\n * the scheduled work.\n */\n public schedule(work: (this: SchedulerAction, state?: T) => void, delay: number = 0, state?: T): Subscription {\n return new this.schedulerActionCtor(this, work).schedule(state, delay);\n }\n}\n", "import { Scheduler } from '../Scheduler';\nimport { Action } from './Action';\nimport { AsyncAction } from './AsyncAction';\nimport { TimerHandle } from './timerHandle';\n\nexport class AsyncScheduler extends Scheduler {\n public actions: Array> = [];\n /**\n * A flag to indicate whether the Scheduler is currently executing a batch of\n * queued actions.\n * @type {boolean}\n * @internal\n */\n public _active: boolean = false;\n /**\n * An internal ID used to track the latest asynchronous task such as those\n * coming from `setTimeout`, `setInterval`, `requestAnimationFrame`, and\n * others.\n * @type {any}\n * @internal\n */\n public _scheduled: TimerHandle | undefined;\n\n constructor(SchedulerAction: typeof Action, now: () => number = Scheduler.now) {\n super(SchedulerAction, now);\n }\n\n public flush(action: AsyncAction): void {\n const { actions } = this;\n\n if (this._active) {\n actions.push(action);\n return;\n }\n\n let error: any;\n this._active = true;\n\n do {\n if ((error = action.execute(action.state, action.delay))) {\n break;\n }\n } while ((action = actions.shift()!)); // exhaust the scheduler queue\n\n this._active = false;\n\n if (error) {\n while ((action = actions.shift()!)) {\n action.unsubscribe();\n }\n throw error;\n }\n }\n}\n", "import { AsyncAction } from './AsyncAction';\nimport { AsyncScheduler } from './AsyncScheduler';\n\n/**\n *\n * Async Scheduler\n *\n * Schedule task as if you used setTimeout(task, duration)\n *\n * `async` scheduler schedules tasks asynchronously, by putting them on the JavaScript\n * event loop queue. It is best used to delay tasks in time or to schedule tasks repeating\n * in intervals.\n *\n * If you just want to \"defer\" task, that is to perform it right after currently\n * executing synchronous code ends (commonly achieved by `setTimeout(deferredTask, 0)`),\n * better choice will be the {@link asapScheduler} scheduler.\n *\n * ## Examples\n * Use async scheduler to delay task\n * ```ts\n * import { asyncScheduler } from 'rxjs';\n *\n * const task = () => console.log('it works!');\n *\n * asyncScheduler.schedule(task, 2000);\n *\n * // After 2 seconds logs:\n * // \"it works!\"\n * ```\n *\n * Use async scheduler to repeat task in intervals\n * ```ts\n * import { asyncScheduler } from 'rxjs';\n *\n * function task(state) {\n * console.log(state);\n * this.schedule(state + 1, 1000); // `this` references currently executing Action,\n * // which we reschedule with new state and delay\n * }\n *\n * asyncScheduler.schedule(task, 3000, 0);\n *\n * // Logs:\n * // 0 after 3s\n * // 1 after 4s\n * // 2 after 5s\n * // 3 after 6s\n * ```\n */\n\nexport const asyncScheduler = new AsyncScheduler(AsyncAction);\n\n/**\n * @deprecated Renamed to {@link asyncScheduler}. Will be removed in v8.\n */\nexport const async = asyncScheduler;\n", "import { AsyncAction } from './AsyncAction';\nimport { AnimationFrameScheduler } from './AnimationFrameScheduler';\nimport { SchedulerAction } from '../types';\nimport { animationFrameProvider } from './animationFrameProvider';\nimport { TimerHandle } from './timerHandle';\n\nexport class AnimationFrameAction extends AsyncAction {\n constructor(protected scheduler: AnimationFrameScheduler, protected work: (this: SchedulerAction, state?: T) => void) {\n super(scheduler, work);\n }\n\n protected requestAsyncId(scheduler: AnimationFrameScheduler, id?: TimerHandle, delay: number = 0): TimerHandle {\n // If delay is greater than 0, request as an async action.\n if (delay !== null && delay > 0) {\n return super.requestAsyncId(scheduler, id, delay);\n }\n // Push the action to the end of the scheduler queue.\n scheduler.actions.push(this);\n // If an animation frame has already been requested, don't request another\n // one. If an animation frame hasn't been requested yet, request one. Return\n // the current animation frame request id.\n return scheduler._scheduled || (scheduler._scheduled = animationFrameProvider.requestAnimationFrame(() => scheduler.flush(undefined)));\n }\n\n protected recycleAsyncId(scheduler: AnimationFrameScheduler, id?: TimerHandle, delay: number = 0): TimerHandle | undefined {\n // If delay exists and is greater than 0, or if the delay is null (the\n // action wasn't rescheduled) but was originally scheduled as an async\n // action, then recycle as an async action.\n if (delay != null ? delay > 0 : this.delay > 0) {\n return super.recycleAsyncId(scheduler, id, delay);\n }\n // If the scheduler queue has no remaining actions with the same async id,\n // cancel the requested animation frame and set the scheduled flag to\n // undefined so the next AnimationFrameAction will request its own.\n const { actions } = scheduler;\n if (id != null && actions[actions.length - 1]?.id !== id) {\n animationFrameProvider.cancelAnimationFrame(id as number);\n scheduler._scheduled = undefined;\n }\n // Return undefined so the action knows to request a new async id if it's rescheduled.\n return undefined;\n }\n}\n", "import { AsyncAction } from './AsyncAction';\nimport { AsyncScheduler } from './AsyncScheduler';\n\nexport class AnimationFrameScheduler extends AsyncScheduler {\n public flush(action?: AsyncAction): void {\n this._active = true;\n // The async id that effects a call to flush is stored in _scheduled.\n // Before executing an action, it's necessary to check the action's async\n // id to determine whether it's supposed to be executed in the current\n // flush.\n // Previous implementations of this method used a count to determine this,\n // but that was unsound, as actions that are unsubscribed - i.e. cancelled -\n // are removed from the actions array and that can shift actions that are\n // scheduled to be executed in a subsequent flush into positions at which\n // they are executed within the current flush.\n const flushId = this._scheduled;\n this._scheduled = undefined;\n\n const { actions } = this;\n let error: any;\n action = action || actions.shift()!;\n\n do {\n if ((error = action.execute(action.state, action.delay))) {\n break;\n }\n } while ((action = actions[0]) && action.id === flushId && actions.shift());\n\n this._active = false;\n\n if (error) {\n while ((action = actions[0]) && action.id === flushId && actions.shift()) {\n action.unsubscribe();\n }\n throw error;\n }\n }\n}\n", "import { AnimationFrameAction } from './AnimationFrameAction';\nimport { AnimationFrameScheduler } from './AnimationFrameScheduler';\n\n/**\n *\n * Animation Frame Scheduler\n *\n * Perform task when `window.requestAnimationFrame` would fire\n *\n * When `animationFrame` scheduler is used with delay, it will fall back to {@link asyncScheduler} scheduler\n * behaviour.\n *\n * Without delay, `animationFrame` scheduler can be used to create smooth browser animations.\n * It makes sure scheduled task will happen just before next browser content repaint,\n * thus performing animations as efficiently as possible.\n *\n * ## Example\n * Schedule div height animation\n * ```ts\n * // html:
\n * import { animationFrameScheduler } from 'rxjs';\n *\n * const div = document.querySelector('div');\n *\n * animationFrameScheduler.schedule(function(height) {\n * div.style.height = height + \"px\";\n *\n * this.schedule(height + 1); // `this` references currently executing Action,\n * // which we reschedule with new state\n * }, 0, 0);\n *\n * // You will see a div element growing in height\n * ```\n */\n\nexport const animationFrameScheduler = new AnimationFrameScheduler(AnimationFrameAction);\n\n/**\n * @deprecated Renamed to {@link animationFrameScheduler}. Will be removed in v8.\n */\nexport const animationFrame = animationFrameScheduler;\n", "import { Observable } from '../Observable';\nimport { SchedulerLike } from '../types';\n\n/**\n * A simple Observable that emits no items to the Observer and immediately\n * emits a complete notification.\n *\n * Just emits 'complete', and nothing else.\n *\n * ![](empty.png)\n *\n * A simple Observable that only emits the complete notification. It can be used\n * for composing with other Observables, such as in a {@link mergeMap}.\n *\n * ## Examples\n *\n * Log complete notification\n *\n * ```ts\n * import { EMPTY } from 'rxjs';\n *\n * EMPTY.subscribe({\n * next: () => console.log('Next'),\n * complete: () => console.log('Complete!')\n * });\n *\n * // Outputs\n * // Complete!\n * ```\n *\n * Emit the number 7, then complete\n *\n * ```ts\n * import { EMPTY, startWith } from 'rxjs';\n *\n * const result = EMPTY.pipe(startWith(7));\n * result.subscribe(x => console.log(x));\n *\n * // Outputs\n * // 7\n * ```\n *\n * Map and flatten only odd numbers to the sequence `'a'`, `'b'`, `'c'`\n *\n * ```ts\n * import { interval, mergeMap, of, EMPTY } from 'rxjs';\n *\n * const interval$ = interval(1000);\n * const result = interval$.pipe(\n * mergeMap(x => x % 2 === 1 ? of('a', 'b', 'c') : EMPTY),\n * );\n * result.subscribe(x => console.log(x));\n *\n * // Results in the following to the console:\n * // x is equal to the count on the interval, e.g. (0, 1, 2, 3, ...)\n * // x will occur every 1000ms\n * // if x % 2 is equal to 1, print a, b, c (each on its own)\n * // if x % 2 is not equal to 1, nothing will be output\n * ```\n *\n * @see {@link Observable}\n * @see {@link NEVER}\n * @see {@link of}\n * @see {@link throwError}\n */\nexport const EMPTY = new Observable((subscriber) => subscriber.complete());\n\n/**\n * @param scheduler A {@link SchedulerLike} to use for scheduling\n * the emission of the complete notification.\n * @deprecated Replaced with the {@link EMPTY} constant or {@link scheduled} (e.g. `scheduled([], scheduler)`). Will be removed in v8.\n */\nexport function empty(scheduler?: SchedulerLike) {\n return scheduler ? emptyScheduled(scheduler) : EMPTY;\n}\n\nfunction emptyScheduled(scheduler: SchedulerLike) {\n return new Observable((subscriber) => scheduler.schedule(() => subscriber.complete()));\n}\n", "import { SchedulerLike } from '../types';\nimport { isFunction } from './isFunction';\n\nexport function isScheduler(value: any): value is SchedulerLike {\n return value && isFunction(value.schedule);\n}\n", "import { SchedulerLike } from '../types';\nimport { isFunction } from './isFunction';\nimport { isScheduler } from './isScheduler';\n\nfunction last(arr: T[]): T | undefined {\n return arr[arr.length - 1];\n}\n\nexport function popResultSelector(args: any[]): ((...args: unknown[]) => unknown) | undefined {\n return isFunction(last(args)) ? args.pop() : undefined;\n}\n\nexport function popScheduler(args: any[]): SchedulerLike | undefined {\n return isScheduler(last(args)) ? args.pop() : undefined;\n}\n\nexport function popNumber(args: any[], defaultValue: number): number {\n return typeof last(args) === 'number' ? args.pop()! : defaultValue;\n}\n", "export const isArrayLike = ((x: any): x is ArrayLike => x && typeof x.length === 'number' && typeof x !== 'function');", "import { isFunction } from \"./isFunction\";\n\n/**\n * Tests to see if the object is \"thennable\".\n * @param value the object to test\n */\nexport function isPromise(value: any): value is PromiseLike {\n return isFunction(value?.then);\n}\n", "import { InteropObservable } from '../types';\nimport { observable as Symbol_observable } from '../symbol/observable';\nimport { isFunction } from './isFunction';\n\n/** Identifies an input as being Observable (but not necessary an Rx Observable) */\nexport function isInteropObservable(input: any): input is InteropObservable {\n return isFunction(input[Symbol_observable]);\n}\n", "import { isFunction } from './isFunction';\n\nexport function isAsyncIterable(obj: any): obj is AsyncIterable {\n return Symbol.asyncIterator && isFunction(obj?.[Symbol.asyncIterator]);\n}\n", "/**\n * Creates the TypeError to throw if an invalid object is passed to `from` or `scheduled`.\n * @param input The object that was passed.\n */\nexport function createInvalidObservableTypeError(input: any) {\n // TODO: We should create error codes that can be looked up, so this can be less verbose.\n return new TypeError(\n `You provided ${\n input !== null && typeof input === 'object' ? 'an invalid object' : `'${input}'`\n } where a stream was expected. You can provide an Observable, Promise, ReadableStream, Array, AsyncIterable, or Iterable.`\n );\n}\n", "export function getSymbolIterator(): symbol {\n if (typeof Symbol !== 'function' || !Symbol.iterator) {\n return '@@iterator' as any;\n }\n\n return Symbol.iterator;\n}\n\nexport const iterator = getSymbolIterator();\n", "import { iterator as Symbol_iterator } from '../symbol/iterator';\nimport { isFunction } from './isFunction';\n\n/** Identifies an input as being an Iterable */\nexport function isIterable(input: any): input is Iterable {\n return isFunction(input?.[Symbol_iterator]);\n}\n", "import { ReadableStreamLike } from '../types';\nimport { isFunction } from './isFunction';\n\nexport async function* readableStreamLikeToAsyncGenerator(readableStream: ReadableStreamLike): AsyncGenerator {\n const reader = readableStream.getReader();\n try {\n while (true) {\n const { value, done } = await reader.read();\n if (done) {\n return;\n }\n yield value!;\n }\n } finally {\n reader.releaseLock();\n }\n}\n\nexport function isReadableStreamLike(obj: any): obj is ReadableStreamLike {\n // We don't want to use instanceof checks because they would return\n // false for instances from another Realm, like an