Package Exports

rollup-plugin-terser

This package does not declare an exports field, so the exports above have been automatically detected and optimized by JSPM instead. If any package subpath is missing, it is recommended to post an issue to the original package (rollup-plugin-terser) to support the "exports" field. If that is not possible, create a JSPM override to customize the exports field for this package.

Readme

rollup-plugin-terser

Rollup plugin to minify generated es bundle. Uses terser under the hood.

Install

npm i rollup-plugin-terser -D

Usage

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

rollup({
  entry: "main.js",
  plugins: [terser()]
});

Options

terser(options);

options - terser API options

options.sourcemap - default: true, type: boolean. The only own option which is used to generate source maps and pass them to rollup.

Examples

Comments

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

terser({
  output: {
    comments: function(node, comment) {
      var text = comment.value;
      var type = comment.type;
      if (type == "comment2") {
        // multiline comment
        return /@preserve|@license|@cc_on/i.test(text);
      }
    }
  }
});

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

terser({
  output: {
    comments: "all"
  }
});

See Terser documentation for further reference.