CODEWITHSUNDEEP
webpackcompressionuglifyjs
dude
dude

Reputation: 6086

Webpack V4: Remove console.logs with Webpack & Uglify

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
    }
  }));
}

Upvotes: 6

Views: 9176

Answers (3)

Mhand
Mhand

Reputation: 81

Since there is no need for installing UglifyJSPlugin separately, you make TerserPlugin do this for you, same as @Dominic answer but in TerserPlugin options:

...
...
...
 optimization: {
      minimize: isProduction,
      minimizer: [
        new TerserPlugin({
          minify: TerserPlugin.uglifyJsMinify,
          // `terserOptions` options will be passed to `uglify-js`
          // Link to options - https://github.com/mishoo/UglifyJS#minify-options
          terserOptions: {
            compress: {
              drop_console: true,
            },
          },
        }),

Upvotes: 0

sMyles
sMyles

Reputation: 2676

This no longer works with Webpack 4, need to use Terser plugin, see here https://stackoverflow.com/a/41041580/378506

Upvotes: 0

nanobar
nanobar

Reputation: 66435

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,
        }
      }
    })
  ]
}

Upvotes: 14

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