~/talk

Deep Dive into Advanced TypeScript: A Live Coding Expedition

on YouTube 48m
Talkat NDC Oslo 2023 · 2023-05-22..05-26· [typescript]

speaker

name:Christian Woerz
x:chwoerz

resources

video:https://youtu.be/5woZK_3z25U
slides:none on file

summary

Hands-on live coding that builds concrete TypeScript utilities: a to‑do demo that lives purely in types, a mapped‑type event system with template literal keys and Capitalize, template‑literal validators for RGB and CSS tokens, conditional types using never for compile‑time empty‑string and exhaustive‑switch safety, infer/awaited recursion to unwrap nested Promises and generate fixed‑length tuples (recursion limit ~999), a typed Angular reactive‑form path generator, branded primitives for email/positive‑number safety, and a 40‑line compile‑time math‑expression validator; code on GitHub.

AI-written summary · about

chapters (7)

  1. 0:00Introduction
  2. 2:11Mapped types
  3. 6:01Template literals
  4. 10:31Never type and conditionals
  5. 18:24Infer and recursion
  6. 27:53Recursive path types
  7. 34:24Branded types and wrap-up

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