Typescript latest

on YouTube ↗30m

" summary

Typescript 2.0 is live (released ~6 weeks earlier) and the demo shows practical, mechanical migration: rename .js to .ts, compiler emit stays the same, red squiggles expose real bugs (wrong property name, HTMLElement vs string, swapped variables) and a single added annotation fixes several errors. Tooling runs via tsserver so any editor can get rich info, declaration files come from @types via npm now, and language work includes non-nullable types flag, control-flow typing, and async/await planned for 2.1.

AI-written summary · about

" chapters (12)

1. 0:00Introduction
2. 0:26The case for TypeScript
3. 3:27Superset and tooling
4. 5:02TypeScript in Angular
5. 6:22Migrating a JS file
6. 10:49Adding type annotations
7. 12:39Angular 1 migration
8. 19:13New features in 2.0
9. 21:52Future updates
10. 23:43Tagged union demo
11. 27:47Implicit any and inference
12. 29:52Q&A and closing

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