Uploaded December 2023 | Updated September 2026, 2 weeks ago

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My Angular course: angularstart.com

It feels like there are two different worlds of TypeScript, and more advanced TypeScript can look completely incomprehensible - even if you've been using TypeScript for a long time. This video walks through typing a simple utility from an Angular library, and highlights some advanced TypeScript concepts that might not be as scary as they first seem.

signalSlice source code: github.com/nartc/ngxtension-platform/blob/main/libs/ngxtension/signal-slice/src/signal-slice.ts
More on signalSlice: youtube.com/watch?v=z7zK2u4vBrA

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Want to build mobile apps with Angular?: ionicstart.com

#typescript #angular

0:00 Introduction
0:36 The Initial API
1:49 The Untyped API
2:06 Generic for initialState
2:55 Typing reducers
4:57 Typing selectors
5:16 The return type
7:55 Conclusion

- More tutorials: modernangular.com
- Follow me on Twitter: twitter.com/joshuamorony