Going ESModules-only in the next version

[rpearce]

For the next major version, I've set it up to only have 3 files in the dist/

1. index.js
2. index.d.ts
3. styles.css

where index.js is a single, non-minified ESM file with all the JS code in it (consumers should run terser over it, themselves).

I've also added the following to the package.json file:

{
  // ...
  "type": "module",
  "main": "./dist/index.js",
  "exports": {
    ".": "./dist/index.js"
  },
  "types": "./dist/index.d.ts",
  // ...
}

I've heard from folx like @sunknudsen that setting "type": "module" will not work with their older build tools.

Questions:

• Who else would have problems with ESModules-only builds?
• How worried should I be worried about that?
• How badly do I need to keep CommonJS alive?