TypeScript Fundamentals × Narrowing, Discriminating Unions, and Type Guards

In this Hasty Treat, Scott and Wes talk about TypeScript Fundamentals, including narrowing, discriminating unions, and type guards.

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Show Notes

• 00:24Welcome
• 01:35Sponsor: Sentry
• 02:23Sponsor: Payments Hub
• 05:21Intro to TypeScript fundamentals
• 06:28What is Type Narrowing?
• 09:32typeof
• 11:58instanceof
• 13:29Custom typeguards
• 16:12this is
• 17:59discriminated unions

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