Considering I have the following code: private readonly postAction$ = new Subject(); postStream$ = this.postAction$.pipe( exhaustMap(() => { this.count ++; console.log('fired') return of('my other post'); }), startWith(''), exhaustMap(()=> { this.count ++; console.log('fired first') return of('my post' + this.count); }) ) Which I subscribe to in my template using the async pipe. I wasn't expecting this to work, but the output to the console was: > fired first Until I call .next() on the postAction$ subject, the first console.log('fired') is never called. What's the execution context of RxJS operators? How do they work? I would have expected that the first exhaust map needed to emit a value, before the rest of the operators are ran. Couldn't find anything in the rxjs docs Demo on stackblitz Continue reading...
