Can you clarify why the operators tap and map of inner observable are not being called? Shouldn't combineLatest subscribe to the observables it receives in obsArr? Why are these operators not triggered by this subscription?
const obsArr = [];
[[1, 2], [3, 4], [5, 6]].map(arr => {
const observable = from(arr);
observable.pipe(
tap(item => {
// this is NOT called
console.log('tap', item)
}),
map(item => {
// this is NOT called
return item * -1;
})
);
obsArr.push(observable);
});
combineLatest(obsArr).subscribe(latestValues => {
console.log(latestValues);
// LOG: [2, 4, 5]
// LOG: [2, 4, 6]
});
View the working stackblitz here:
Your insights on this matter are greatly appreciated!