TypeScript: State of the Union
summary
TypeScript claims real, concrete wins: v3.1 powers a language server that gives sub‑100ms editor feedback and automatic fixes, the tsc binary can emit or act only as a type checker, and Babel 7 now strips TypeScript syntax so workflows can keep existing transpilers. Demos show adding a JSDoc plus // @ts-check catches a runtime toUpperCase bug, allowJs compiles plain .js, DefinitelyTyped has huge community typings, and project references cut a big mono‑repo build from minutes to seconds.
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chapters (15)
- 0:00Introduction
- 5:45Why TypeScript exists
- 6:53TypeScript within Microsoft
- 8:40TypeScript is popular
- 9:59TypeErrors
- 14:33Demo
- 16:05TypeScript Documentation
- 17:49TS Check
- 19:36TS Config
- 23:07Type System
- 26:45Strict
- 28:53Language Service
- 32:11TypeScript Passing
- 35:41predictable release cadence
- 36:34project
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