@easymetrics/uglifyjs-webpack-plugin-flat v1.0.0-beta.5

⚠️ This documentation is for the current beta. For latest stable, see v0.4.6.

ℹ️ webpack contains the same plugin under webpack.optimize.UglifyJsPlugin. The documentation is valid apart from the installation instructions

npm i -D uglifyjs-webpack-plugin@beta

webpack.config.js

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

module.exports = {
  plugins: [
    new UglifyJSPlugin()
  ]
}

⚠️ The following options are for the latest beta version. If you would like to see the options for the latest built-in version of the plugin in webpack, see the v0.4.6 docs.

test

webpack.config.js

[
  new UglifyJSPlugin({
    test: /\.js($|\?)/i
  })
]

include

webpack.config.js

[
  new UglifyJSPlugin({
    include: /\/includes/
  })
]

exclude

webpack.config.js

[
  new UglifyJSPlugin({
    exclude: /\/excludes/
  })
]

cache

{Boolean}

webpack.config.js

[
  new UglifyJSPlugin({
    cache: true
  })
]

Enable file caching. Default path to cache directory: node_modules/.cache/uglifyjs-webpack-plugin.

{String}

webpack.config.js

[
  new UglifyJSPlugin({
    cache: 'path/to/cache'
  })
]

Path to cache directory.

parallel

{Boolean}

webpack.config.js

[
  new UglifyJSPlugin({
    parallel: true
  })
]

Enable parallelization. Default number of concurrent runs: os.cpus().length - 1.

{Number}

webpack.config.js

[
  new UglifyJSPlugin({
    parallel: 4
  })
]

Number of concurrent runs.

ℹ️ Parallelization can speedup your build significantly and is therefore highly recommended

sourceMap

webpack.config.js

[
  new UglifyJSPlugin({
    sourceMap: true
  })
]

⚠️ cheap-source-map options don't work with this plugin

uglifyOptions

webpack.config.js

[
  new UglifyJSPlugin({
    uglifyOptions: {
      ie8: false,
      ecma: 8,
      parse: {...options},
      mangle: {
        ...options,
        properties: {
          // mangle property options
        }
      },
      output: {
        comments: false,
        beautify: false,
        ...options
      },
      compress: {...options},
      warnings: false
    }
  })
]

extractComments

{Boolean}

All comments that normally would be preserved by the comments option will be moved to a separate file. If the original file is named foo.js, then the comments will be stored to foo.js.LICENSE.

{RegExp|String} or {Function<(node, comment) -> {Boolean}>}

All comments that match the given expression (resp. are evaluated to true by the function) will be extracted to the separate file. The comments option specifies whether the comment will be preserved, i.e. it is possible to preserve some comments (e.g. annotations) while extracting others or even preserving comments that have been extracted.

{Object}

warningsFilter

webpack.config.js

[
  new UglifyJsPlugin({
    warningsFilter: (src) => true
  })
]