extract-hash-webpack-plugin

extract-hash-webpack-plugin

Extract webpack compiler hash to generate version.json file after build in the dest directory.

Options

You can pass some configuration options to ExtractHashWebpackPlugin. Allowed values are as follows:

• filename: Version file name. Default to version.json.
• hashLength: Substring length of compiler hash. Default to value 'normal' which means the whole hash value itself. You can pass a number to get a substring of it. Or pass string 'full' to get value of fullHash.
• dest: Version file save path. Default to process.cwd(). Will do mkdir if path doesn't exist.
• fn: A function to customize content format of version file to be generated. Default to return a json string of hash with the key version.

Example

Generate file ver.json in directory path.resolve(process.cwd(), 'prd').

import ExtractHashWebpackPlugin from 'extract-hash-webpack-plugin';

var webpackConfig = {
  entry: 'main.js',
  output: {
    filename: '[name]-[hash:8].js',
    publicPath: '/js',
  },
  plugins: [
    new ExtractHashWebpackPlugin({
      dest: 'prd',
      filename: 'ver.json',
      hashLength: 8,
    }),
    new ExtractHashWebpackPlugin({
      dest: 'prd',
      filename: 'ver.xml',
      hashLength: 8,
      fn: hash => `<xml><version>${hash}</version></xml>`
    })
  ]
};

Contents of ver.json:

{
  "version": "[hash:8]"
}

Contents of ver.xml:

<xml>
  <version>
    [hash:8]
  </version>
</xml>