AngularNYC | Creating an observable from scratch (live-coding session) - Ben Lesh @Angularnyc | Uploaded December 2018 | Updated October 2024, 2 hours ago.
This talk is an attempt to demystify what an Observable is, what pipe is, and what operators are.

Here is the Stackblitz:

stackblitz.com/edit/typescript-im9hxp

(Don't use this for real, people... haha... just for playing) :)