https://github.com/TrySound/rollup-plugin-uglify

Rollup plugin to minify generated bundle
https://github.com/TrySound/rollup-plugin-uglify

Last synced: 25 days ago
JSON representation

Rollup plugin to minify generated bundle

• Host: GitHub
• URL: https://github.com/TrySound/rollup-plugin-uglify
• Owner: TrySound
• License: mit
• Created: 2015-12-30T21:52:33.000Z (almost 9 years ago)
• Default Branch: master
• Last Pushed: 2023-03-20T12:30:36.000Z (over 1 year ago)
• Last Synced: 2024-11-05T05:03:01.790Z (about 1 month ago)
• Language: JavaScript
• Homepage:
• Size: 283 KB
• Stars: 261
• Watchers: 4
• Forks: 42
• Open Issues: 14
• Metadata Files:
  • Readme: README.md
  • License: LICENSE

Awesome Lists containing this project

• awesome - uglify - Minify a bundle with UglifyJS. (Plugins / Output)

README

        
# rollup-plugin-uglify [![Travis Build Status][travis-img]][travis]

[travis-img]: https://travis-ci.org/TrySound/rollup-plugin-uglify.svg

[travis]: https://travis-ci.org/TrySound/rollup-plugin-uglify

[Rollup](https://github.com/rollup/rollup) plugin to minify generated bundle. Uses [UglifyJS](https://github.com/mishoo/UglifyJS2) under the hood. There are a few improvements over native uglify:

* uglify is run in worker for every chunk

* errors are displayed with [babel code frame](https://babeljs.io/docs/en/next/babel-code-frame.html)

_Note: uglify-js is able to transpile only es5 syntax. If you want to transpile es6+ syntax use [terser](https://github.com/TrySound/rollup-plugin-terser) instead_

## Install

```sh

yarn add rollup-plugin-uglify --dev

```

*Note: this package requires [email protected] and higher*

## Usage

```js

import { rollup } from "rollup";

import { uglify } from "rollup-plugin-uglify";

rollup({

  input: "main.js",

  plugins: [uglify()]

});

```

## Options

```js

uglify(options);

```

`options` - [uglifyJS API options](https://github.com/mishoo/UglifyJS2/blob/master/README.md#minify-options)

`options.sourcemap: boolean`

Generates source maps and passes them to rollup. Defaults to `true`.

`options.numWorkers: number`

Amount of workers to spawn. Defaults to the number of CPUs minus 1.

## Examples

### Comments

If you'd like to preserve comments (for licensing for example), then you can specify a function to do this like so:

```js

uglify({

  output: {

    comments: function(node, comment) {

      if (comment.type === "comment2") {

        // multiline comment

        return /@preserve|@license|@cc_on/i.test(comment.value);

      }

      return false;

    }

  }

});

```

Alternatively, you can also choose to keep all comments (e.g. if a licensing header has already been prepended by a previous rollup plugin):

```js

uglify({

  output: {

    comments: "all"

  }

});

```

See [UglifyJS documentation](https://github.com/mishoo/UglifyJS2/blob/master/README.md) for further reference.

# License

MIT © [Bogdan Chadkin](mailto:[email protected])