fix: avoid mixing CJS require in ESM modules

[kuwoyuki]

Reasons for making this change

Fixes #1893
Mixing CommonJS require in ESM modules is incorrect. It works in webpack, however a lot of other bundlers do not support that.

Checklist

• I'm updating documentation
  • I've checked the rendering of the Markdown text I've added
• I'm adding or updating code
  • I've added and/or updated tests
  • I've updated docs if needed
• I'm adding a new feature
  • I've updated the playground with an example use of the feature

[epicfaace]

Looks good, thanks! I'm not sure why the require statements were there earlier.