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JavaScript & TypeScript

Practical knowledge for JS and TS — from language quirks to type-system patterns.

Topics in this section​

  • TypeScript type system tips (generics, mapped types, conditional types)
  • Async patterns (Promises, async/await, error handling)
  • Module system and bundler behaviour
  • Common JS pitfalls and how to avoid them
  • Runtime differences (Node.js vs browser)

This section is growing. Contribute an article if you know something worth sharing.