title: How to inject Webpack build hash to application code
body: <p>I'm using Webpack's [hash] for cache busting locale files. But I also need to hard-code the locale file path to load it from browser. Since the file path is altered with [hash], I need to inject this value to get right path.</p>
  
  <p>I don't know how can get Webpack [hash] value programmatically in config so I can inject it using WebpackDefinePlugin.</p>
  
  <pre><code>module.exports = (env) =&gt; {
    return {
     entry: 'app/main.js',
     output: {
        filename: '[name].[hash].js'
     }
     ...
     plugins: [
        new webpack.DefinePlugin({
           HASH: ***???***
        })
     ]
    }
  }
  </code></pre>