~/talk

The Fun Side of Advanced TypeScript: An Interactive Coding Session

on YouTube 54m
Talkat NDC London 2026 · 2026-01-26..01-30· [typescript]

speaker

name:Dante De Ruwe
github:DanteDeRuwe

resources

video:https://youtu.be/t4tjMeFYWEM
slides:none on file

summary

Builds a working Wordle fully in TypeScript types (about 21 lines) and a type-level calculator that does increment, decrement, add, multiply, whole division and modulo by using recursive conditional types, template literal inferencing and tuple-length tricks; results show as VS Code inlay hints so all evaluation happens at compile time. Demonstrates practical limits — TypeScript caps recursion (~1000) and massively large type programs hit compiler limits — but the demos compile and work. compile-time arithmetic template-literal + infer

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chapters (11)

  1. 0:00Advanced TypeScript intro
  2. 1:59Building Wordle with types
  3. 10:23Conditional types & literals
  4. 15:41Recursion in types
  5. 21:27IndexOf function in types
  6. 26:01Wordle to calculator
  7. 29:31Incrementing numbers
  8. 33:31Adding numbers in types
  9. 36:23Multiplying numbers
  10. 42:07Why advanced TS matters
  11. 45:19Q&A

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