Webpack V4: Remove console.logs with Webpack & Uglify

dude picture dude · Mar 4, 2018 · Viewed 7.4k times · Source

This answer worked like a charm previously:

https://stackoverflow.com/a/41041580/3894981

However, since Webpack v4 it doesn't work anymore. Since then it throws:

Error: webpack.optimize.UglifyJsPlugin has been removed, please use config.optimization.minimize instead.

What is necessary here in order to make it work in Webpack v4?

I've tried using the following without luck:

const uglifyJsPlugin = require('uglifyjs-webpack-plugin');

if (process.argv.indexOf('-p') !== -1) {
  // compress and remove console statements. Only add this plugin in production
  // as even if drop_console is set to false, other options may be set to true
  config.plugins.push(new uglifyJsPlugin({
    compress: {
      'drop_console': true
    }
  }));
}

Answer

Dominic picture Dominic · Mar 5, 2018

You're still putting it in config.plugins, have you tried putting it in config.optimization.minimizer?

const UglifyJSPlugin = require('uglifyjs-webpack-plugin')

...

optimization: {
  minimizer: [
    new UglifyJSPlugin({
      uglifyOptions: {
        compress: {
          drop_console: true,
        }
      }
    })
  ]
}