chunk-manifest-webpack2-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.

Example

https://webpack.js.org/how-to/cache/ and https://medium.com/@okonetchnikov/long-term-caching-of-static-assets-with-webpack-1ecb139adb95#.jg0szik07

Usage

Install via npm:

npm install chunk-manifest-webpack2-plugin

And then require and provide to webpack:

// in webpack.config.js or similar
var ChunkManifestPlugin = require('chunk-manifest-webpack2-plugin');

module.exports = {
  // your config values here
  plugins: [
    new ChunkManifestPlugin({
      filename: "manifest.json",
      manifestVariable: "webpackManifest"
    })
  ]
};

Options

filename

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

manifestVariable

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