Allows exporting a manifest that maps chunk ids to their output files, instead of keeping the mapping inside the webpack bootstrap.

Usage no npm install needed!

<script type="module">
  import codemotionChunkManifestWebpackPlugin from 'https://cdn.skypack.dev/@codemotion/chunk-manifest-webpack-plugin';



Allows exporting a JSON file that maps chunk ids to their resulting asset files. Webpack can then read this mapping, assuming it is provided somehow on the client, instead of storing a mapping (with chunk asset hashes) in the bootstrap script, which allows to actually leverage long-term caching.


Install via npm:

npm install --save-dev chunk-manifest-webpack-plugin

Install via yarn:

yarn add --dev chunk-manifest-webpack-plugin

And then require and provide to webpack:

// in webpack.config.js or similar
const ChunkManifestPlugin = require('chunk-manifest-webpack-plugin');

module.exports = {
  // your config values here
  plugins: [
    new ChunkManifestPlugin({
      filename: 'manifest.json',
      manifestVariable: 'webpackManifest',
      inlineManifest: false



Where the manifest will be exported to on bundle compilation. This will be relative to the main webpack output directory. Default = "manifest.json"


What JS variable on the client webpack should refer to when requiring chunks. Default = "webpackManifest"


Whether or not to write the manifest output into the html-webpack-plugin. Default = false

// index.ejs
    <!-- app -->
    <%= htmlWebpackPlugin.files.webpackManifest %>