In this Hasty Treat, Scott and Wes talk about TypeScript Fundamentals, including narrowing, discriminating unions, and type guards.
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- 00:24 Welcome
- 01:35 Sponsor: Sentry
- 02:23 Sponsor: Payments Hub
- 05:21 Intro to TypeScript fundamentals
- 06:28 What is Type Narrowing?
- 09:32 typeof
- 11:58 instanceof
- 13:29 Custom typeguards
- 16:12 this is
- 17:59 discriminated unions