javascripttypescriptwebpackrollup

How to remove comments when building TypeScript into JavaScripts using rollup

I am using rollup to build my TypeScript sources. I want to remove comments ONLY, without any minification, in order to hot update code when debugging.

I have tried rollup-plugin-terser, it can remove comments but it will also minify my code somehow, I cannot completely disable the minification.

How can I do that? Thanks!

Solution

  • You should be able to achieve this too with just rollup-plugin-terser. It bases on terser so more information it's actually available on its README, here is the part related to minification. So in your case this part of rollup.config.js should looks like:

    plugins: [
  terser({
// remove all comments
    format: {
      comments: false
    },
// prevent any compression
    compress: false
  }),
],

    Keep in mind, that you can also enable part of configuration for production only. So having declared production const in your rollup.config.js you can do like that:

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

const production = !process.env.ROLLUP_WATCH;

export default {
  plugins: [
    production && terser({
      // terser plugin config here
    }),
  ],
};