crude-timing-plugin.js

class CrudeTimingPlugin {
  apply(compiler) {
    compiler.plugin('compilation', compilation => {
      let startOptimizePhase;

      compilation.plugin('optimize-chunk-assets', (_chunks, callback) => {
        // Cruddy way of measuring minification time. UglifyJSPlugin does all
        // its work in this phase of compilation so we time the duration of
        // the entire phase
        startOptimizePhase = Date.now();

        // For async phases: don't forget to invoke the callback
        callback();
      });

      compilation.plugin('after-optimize-chunk-assets', () => {
        /* eslint-disable no-console */
        console.log(`*** optimize-chunk-asset PAHSE DURATION: ${Date.now() - startOptimizePhase} ***`);
      });
    });
  }
}

module.exports = CrudeTimingPlugin;