Screenshot of code for Server.js class showing the type definitions for the FilePathMixin and a typedef that mixes it into Polka’s Middleware class. Relevant lines: /** @typedef {{ filePath: string }} FilePathMixin */ /** @typedef {import('polka').Middleware<any> & FilePathMixin} HandlerWithFilePathMixin */

Notices where this attachment appears

1. Aral Balkan (aral@mastodon.ar.al)'s status on Monday, 12-Jun-2023 19:10:05 JST Aral Balkan

   - #JavaScript is a wonderfully dynamic language and its dynamic features afford you a great deal of expressiveness.

   - Strong typing is useful for catching errors before runtime.

   These two statements don’t have to be mutually exclusive.

   Instead of shackling yourself to #TypeScript™ 2023™ Enterprise Edition™, you can use #JSDoc to get the best of both worlds.

   Here, for example, I’m mixing in a property into Polka request handlers and documenting it. Intent is clear and type checker is happy.