Custom Type Guards - TypeScript Narrowing #3 скачать в хорошем качестве

Custom Type Guards - TypeScript Narrowing #3

The third video in our TypeScript Narrowing series. In this video, I explain: Type predicates How to create custom type guards BONUS: How to create a type guard by exclusion 📚 Read the article: https://www.lucaspaganini.com/academy... 🚨 Subscribe to the newsletter: https://www.lucaspaganini.com/newsletter 📧 Email: me@lucaspaganini.com 🐦 Twitter:   / lucaspaganini   📸 Instagram:   / lucaspaganini   ---------- CHAPTERS 0:00 Introduction 0:36 Type Predicates 2:16 The unknown Type 2:33 Custom Guards 2:46 Error Guard 2:53 Warning Guard 3:31 Falsy Guard 4:24 formatErrorMessage() with Custom Guards 4:29 BONUS: Narrowing by Exclusion 4:46 Truthy Guard 4:59 Conclusion RELATED 1. 1min JS - Falsy and Truthy:    • Falsy and Truthy in JavaScript   2. 1min TS - Unknown vs Any:    • Unknown vs Any in TypeScript - With Examples   3. TypeScript Narrowing Series:    • What is a Type Guard - TypeScript Narrowin...   4. TypeScript Narrowing Part 1 - What is a Type Guard:    • What is a Type Guard - TypeScript Narrowin...   5. TypeScript Narrowing Part 2 - Type Guard Operators:    • Fundamental Type Guards - TypeScript Narro...   REFERENCES 1. TypeScript docs on narrowing: https://www.typescriptlang.org/docs/h... 2. TypeScript docs type predicates: https://www.typescriptlang.org/docs/h... 3. The in operator on MDN: https://developer.mozilla.org/en-US/d... 4. TypeScript proposal to add NaN as a type: https://github.com/Microsoft/TypeScri... #typescript #programming #webdevelopment