How to bundle require statements from esm?

[tornadocontrib]

Hello,

I would like to know how to make the rollup bundle packages imported by require statement from esm.

For example,

// test.mjs
import test from 'test'
const some_module = require('some');

would leave

// output.js
const some_module = require('some');

like this so the package imported by require statement isn't bundled

How should I force it to bundle?

Thanks,

[liuly0322]

You need @rollup/plugin-commonjs. If you want to use both include and require statement in the same file, set transformMixedEsModules to true. Example rollup config file:

import commonjs from '@rollup/plugin-commonjs';

export default {
  input: 'index.js',
  output: {
    dir: 'output',
    format: 'cjs'
  },
  plugins: [commonjs({
    transformMixedEsModules: true
  })]
};

[tornadocontrib]

@liuly0322 Have tried but still it wouldn't bundle modules imported by require statement

[liuly0322]

@liuly0322 Have tried but still it wouldn't bundle modules imported by require statement

Check the config file usage, are you using -c option (for example npx rollup -c or add -c option in your package.json scripts)? If that doesn't work, would you please provide a minimal reproducible example repo and the command you use to bundle?