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@ -5,8 +5,8 @@ UglifyJS 3
UglifyJS is a JavaScript parser, minifier, compressor or beautifier toolkit.
#### Note:
- **`uglify-js@3.x` has a new CLI and API and is not backwards compatible with [`uglify-js@2.x`](https://github.com/mishoo/UglifyJS2/tree/v2.x)**.
- **Documentation for the `2.x` release can be found [here](https://github.com/mishoo/UglifyJS2/tree/v2.x)**.
- **`uglify-js@3.x` has a new API and CLI and is not backwards compatible with [`uglify-js@2.x`](https://github.com/mishoo/UglifyJS2/tree/v2.x)**.
- **Documentation for UglifyJS `2.x` releases can be found [here](https://github.com/mishoo/UglifyJS2/tree/v2.x)**.
- Release versions of `uglify-js` only support ECMAScript 5 (ES5). If you wish to minify
ES2015+ (ES6+) code then please use the [harmony](#harmony) development branch.
- Node 7 has a known performance regression and runs `uglify-js` twice as slow.