Matt Bierner - SeattleJS Conference 2017

on YouTube ↗11m

" summary

TypeScript’s checkJs brings real type checking to plain JavaScript, catching concrete issues like wrong argument counts, incorrect argument types, assigning strings to boolean state, and uninitialized properties that broke a React sticker list. It works in VS Code, Atom and Visual Studio, provides quick fixes (add import, initialize in constructor), enables per-file // @ts-check or project-wide checkJs: true, and runs in CI via tsc --noEmit -p jsconfig.json so errors surface before runtime.

AI-written summary · about

" chapters (4)

1. 0:00Start
2. 0:26Check Jas
3. 7:48Function Declaration
4. 9:11Jazz Config Project

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