First commit

.gitignore

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+/dist
+/node_modules

LICENSE

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+Copyright (c) 2023 Ment Labs
+
+Permission is hereby granted, free of charge, to any person obtaining
+a copy of this software and associated documentation files (the
+"Software"), to deal in the Software without restriction, including
+without limitation the rights to use, copy, modify, merge, publish,
+distribute, sublicense, and/or sell copies of the Software, and to
+permit persons to whom the Software is furnished to do so, subject to
+the following conditions:
+
+The above copyright notice and this permission notice shall be
+included in all copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
+LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
+OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
+WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.

README.md

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+# Focus Trap
+
+**Focus Trap** is a JavaScript utility for managing keyboard focus within a specified element. It's an important tool for creating accessible web applications, ensuring that users can navigate and interact with content effectively, particularly in modal dialogs and other interactive components.
+
+## Why Focus Trapping is Important
+
+Focus trapping is essential for web accessibility. It prevents the keyboard focus from wandering outside of a specific UI component, such as a modal dialog or a dropdown menu. This is crucial because it ensures that users with disabilities can interact with the content without losing their place or encountering unexpected behavior.
+
+Focus trapping helps in several ways:
+
+1. **Preventing Users from Losing Context:** When users open a modal or pop-up, they should remain focused on the content within it. Focus trapping ensures that the keyboard focus remains inside the modal, preventing users from accidentally tabbing to elements outside and losing context.
+
+2. **Enhancing Keyboard Navigation:** Users who rely on keyboard navigation should be able to move through interactive elements logically. Focus trapping helps maintain a predictable and sequential order of interaction, improving the user experience.
+
+3. **Mobile Accessibility:** Focus trapping isn't limited to desktop browsers. It also benefits mobile users by providing a consistent and accessible experience, ensuring that interactive elements are easily reachable and navigable on touch devices.
+
+## Key Features
+
+- **Inert Property:** Unlike some other focus trapping solutions, Focus Trap uses the `inert` property to make elements outside the trap area inert. This ensures that even on mobile devices, users cannot interact with or tab to elements outside the designated focus trap. You can learn more about the `inert` property [here](https://developer.mozilla.org/en-US/docs/Web/API/HTMLElement/inert). Note that for full browser compatibility, you may need to use an inert polyfill. You can find an inert polyfill [here](https://github.com/WICG/inert).
+
+- **Nested Focus Trapping:** Focus Trap supports nested focus trapping, allowing you to create complex UI components with nested focus traps. This makes it versatile and suitable for various use cases, including nested modal dialogs, where you want to ensure that focus remains within the currently active dialog while preventing interaction with elements outside of it.
+
+## Installation
+
+You can install the Focus Trap package via npm or yarn:
+
+```bash
+npm install @ment-labs/focus-trap
+# or
+yarn add @ment-labs/focus-trap
+```
+
+## Usage
+
+To use Focus Trap, simply import the package and initialize it with the element you want to trap focus within. Here's an example of how to use it:
+
+```javascript
+import { FocusTrap } from "@ment-labs/focus-trap"
+
+const modalDialogElement = document.getElementById("your-modal-dialog-element")
+const focusTrap = new FocusTrap(modalDialogElement)
+
+// To trap focus:
+focusTrap.trapFocus()
+
+// To release focus trapping:
+focusTrap.releaseFocus()
+```
+
+## Contributing
+
+Focus Trap is open-source software, freely distributable under the terms of an [MIT-style license](LICENSE). The [source code is hosted on GitHub](https://github.com/ment-labs/focus-trap).
+
+We welcome contributions in the form of bug reports, pull requests, or thoughtful discussions in the [GitHub issue tracker](https://github.com/ment-labs/focus-trap/issues).
+
+Please note that this project is released with a [Contributor Code of Conduct](docs/CONDUCT.md). By participating in this project you agree to abide by its terms.
+
+---------
+
+© 2023 Ment Labs

bin/build.js

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+#!/usr/bin/env node
+
+const esbuild = require("esbuild")
+const package = require("../package.json")
+const year = new Date().getFullYear()
+const banner = `/*\n\@ment-labs/focus-trap ${package.version}\nCopyright © ${year} Ment Labs\n*/`
+
+const options = {
+  entryPoints: ["src/index.js"],
+  bundle: true,
+  minify: true,
+  banner: { js: banner },
+  format: 'esm',
+  outfile: "dist/focus-trap.js",
+}
+
+esbuild.build(options).catch(() => process.exit(1))

docs/CONDUCT.md

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+# Contributor Covenant Code of Conduct
+
+## Our Pledge
+
+In the interest of fostering an open and welcoming environment, we as
+contributors and maintainers pledge to making participation in our project and
+our community a harassment-free experience for everyone, regardless of age, body
+size, disability, ethnicity, gender identity and expression, level of experience,
+nationality, personal appearance, race, religion, or sexual identity and
+orientation.
+
+## Our Standards
+
+Examples of behavior that contributes to creating a positive environment
+include:
+
+* Using welcoming and inclusive language
+* Being respectful of differing viewpoints and experiences
+* Gracefully accepting constructive criticism
+* Focusing on what is best for the community
+* Showing empathy towards other community members
+
+Examples of unacceptable behavior by participants include:
+
+* The use of sexualized language or imagery and unwelcome sexual attention or
+advances
+* Trolling, insulting/derogatory comments, and personal or political attacks
+* Public or private harassment
+* Publishing others' private information, such as a physical or electronic
+  address, without explicit permission
+* Other conduct which could reasonably be considered inappropriate in a
+  professional setting
+
+## Our Responsibilities
+
+Project maintainers are responsible for clarifying the standards of acceptable
+behavior and are expected to take appropriate and fair corrective action in
+response to any instances of unacceptable behavior.
+
+Project maintainers have the right and responsibility to remove, edit, or
+reject comments, commits, code, wiki edits, issues, and other contributions
+that are not aligned to this Code of Conduct, or to ban temporarily or
+permanently any contributor for other behaviors that they deem inappropriate,
+threatening, offensive, or harmful.
+
+## Scope
+
+This Code of Conduct applies both within project spaces and in public spaces
+when an individual is representing the project or its community. Examples of
+representing a project or community include using an official project e-mail
+address, posting via an official social media account, or acting as an appointed
+representative at an online or offline event. Representation of a project may be
+further defined and clarified by project maintainers.
+
+## Enforcement
+
+Instances of abusive, harassing, or otherwise unacceptable behavior may be
+reported by contacting one of the project maintainers listed below. All
+complaints will be reviewed and investigated and will result in a response that
+is deemed necessary and appropriate to the circumstances. The project team is
+obligated to maintain confidentiality with regard to the reporter of an incident.
+Further details of specific enforcement policies may be posted separately.
+
+Project maintainers who do not follow or enforce the Code of Conduct in good
+faith may face temporary or permanent repercussions as determined by other
+members of the project's leadership.
+
+## Project Maintainers
+
+* Bruno Prieto <<[email protected]>>
+
+## Attribution
+
+This Code of Conduct is adapted from the [Contributor Covenant][homepage], version 1.4,
+available at [http://contributor-covenant.org/version/1/4][version]
+
+[homepage]: http://contributor-covenant.org
+[version]: http://contributor-covenant.org/version/1/4/