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Remote sources


This feature is flagged by webpack as experimental and, as such, it is opt-in.

If you use this feature and bump into a problem please ensure that bud.js is doing something wrong before opening an issue in the roots/bud repository. Consider accompanying your issue with a PR that implements the change you would like to see.

You can build remote packages at compile time, serve them locally, and generate a lockfile to guarantee deployed dependencies match your development environment.

Ships with support for the following sources, but you can add more:

  • skypack
  • gist
  • github
  • unpkg

Basic usage

First, enable the feature:

export default async bud => {

Once enabled, try importing a module using one of the built in sources:

import confetti from 'skypack:canvas-confetti'

If you are referencing a github URL, note that you will need to include a branch:

import readme from 'github:roots/bud/main/'

If you are specifying any asset with a remote URL (e.g. an image) it will automatically convert it to a local module. For example, referencing an image in CSS will download that image to the store and map the URL to the local module:

body {
background-image: url('');

Import mapping

You can use bud.imports in package.json to map sources to application modules.

"bud": {
"imports": {
"skypack": ["canvas-confetti"]

Now, in your application code you can import canvas-confetti as if it were a traditionally installed module:

import confetti from 'canvas-confetti'

This approach makes your application more standard and less dependant on build tool magic.

Setting custom sources

Registered sources are stored as a Map in bud.cdn.sources.

To add your own source:

bud.cdn.sources.set('localhost', 'https://localhost:8080/')

Once added it can be used in the same way as the built-in sources:

import test from 'localhost:8080/test.js'

To remove a source (built-in or custom):