rollup-plugin-url

Inline import files as data-URIs, or copy them to output

Install

npm i --save-dev rollup-plugin-url

Usage

import {rollup} from "rollup"
import url from "rollup-plugin-url"

const writeoptions = {dest: "output/output.js"}
const plugin = url({
  limit: 10 * 1024, // inline files < 10k, copy files > 10k
  include: ["**/*.svg"], // defaults to .svg, .png, .jpg and .gif files
  emitFiles: true // defaults to true
})

rollup({
  entry: "main.js",
  plugins: [plugin],
})
.then(bundle => bundle.write(writeoptions))

Options

limit

Optional. Type: number.

This is the file size limit to inline files. If files exceed this limit, they will be copied instead to the destination folder and the hashed filename will be given instead. If value set to 0 all files will be copied.

Defaults to 14336 (14kb).

include / exclude

Optional. Type: a minimatch pattern, or array of minimatch patterns

These patterns determine which files are inlined. Defaults to .svg, .png, .jpg and .gif files.

publicPath

Optional. Type: string

The publicPath will be added in front of file names when they are not inlined but copied.

emitFiles

Optional. Type: boolean

The emitFiles option is used to run the plugin as you normally would but prevents any files being emitted. This is useful for when you are using rollup to emit both a client side and server side bundle.

fileName

Optional. Type: string

When emitFiles is true, the fileName 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 it's file extension
• [extname] - The extension of the imported file, including the leading .
• [dirname] - The parent directory name of the imported file, including trailing /

Defaults to: "[hash][extname]"

sourceDir

Optional. Type: string

When using the [dirname] replacement in fileName, uses this directory as the source directory to create the file path from 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

Optional. Type: string

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