url

@rollup/plugin-url

🍣 A Rollup plugin which imports files as data-URIs or ES Modules.

Requirements

This plugin requires an LTS Node version (v14.0.0+) and Rollup v1.20.0+.

Install

Using npm:

npm install @rollup/plugin-url --save-dev

Usage

Create a rollup.config.js configuration file and import the plugin:

import url from '@rollup/plugin-url';

export default {
  input: 'src/index.js',
  output: {
    dir: 'output',
    format: 'cjs'
  },
  plugins: [url()]
};

Then call rollup either via the CLI or the API.

With an accompanying file src/index.js, the local image.svg file would now be importable as seen below:

// src/index.js
import svg from './image.svg';
console.log(`svg contents: ${svg}`);

Options

exclude

Type: String | Array[...String]
Default: null

A picomatch pattern, or array of patterns, which specifies the files in the build the plugin should ignore. By default no files are ignored.

include

Type: String | Array[...String]
Default: ['**/*.svg', '**/*.png', '**/*.jp(e)?g', '**/*.gif', '**/*.webp']

A picomatch pattern, or array of patterns, which specifies the files in the build the plugin should operate on. By default .svg, .png, .jpg, .jpeg, .gif and .webp files are targeted.

limit

Type: Number
Default: 14336 (14kb)

The file size limit for inline files. If a file exceeds this limit, it will be copied to the destination folder and the hashed filename will be provided instead. If limit is set to 0 all files will be copied.

publicPath

Type: String
Default: (empty string)

A string which will be added in front of filenames when they are not inlined but are copied.

emitFiles

Type: Boolean
Default: true

If false, will prevent files being emitted by this plugin. This is useful for when you are using Rollup to emit both a client-side and server-side bundle.

fileName

Type: String
Default: '[hash][extname]'

If emitFiles is true, this option can be used to rename the emitted files. It accepts the following string replacements:

• [hash] - The hash value of the file's contents
• [name] - The name of the imported file (without its file extension)
• [extname] - The extension of the imported file (including the leading .)
• [dirname] - The parent directory name of the imported file (including trailing /)

sourceDir

Type: String
Default: (empty string)

When using the [dirname] replacement in fileName, use this directory as the source directory from which to create the file path rather than the parent directory of the imported file. For example:

src/path/to/file.js

import png from './image.png';

rollup.config.js

url({
  fileName: '[dirname][hash][extname]',
  sourceDir: path.join(__dirname, 'src')
});

Emitted File: path/to/image.png

destDir

Type: String
Default: (empty string)

The destination dir to copy assets, usually used to rebase the assets according to HTML files.

Meta

CONTRIBUTING

LICENSE (MIT)