Hello @cartant,
could you update the rxjs-report-usage dependency to 1.0.6 to incorporate the latest patches (e.g. prompts)?

Thanks in advance

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Version 10 of Node.js (code name Dubnium) has been released! 🎊

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Awesome library. Could you provide some examples for each operators?

When I try to import from rxjs-etc/esm2015/operators/delayUntil, I get an error: Could not find a declaration file for module 'rxjs-etc/esm2015/operators/delayUntil'.

My workaround:

// modules.d.ts
declare module 'rxjs-etc/esm2015/operators/delayUntil' {
  export { delayUntil } from 'rxjs-etc/operators/delayUntil';
}

Perhaps this library should enable declaration for the ESM and ES2015 builds, so we don't have to do this?

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Is the module officially compatible with version 7? If so, package.json should be updated.

Hi Nicholas,

what do you think about adding a firstMap() operator? I often use a pattern like this in my code:

someObservable$
    .pipe(
        first(),
        mergeMap(() => {
            // ...
        })
    )

But sometimes I end up using switchMap() or concatMap() instead of mergeMap(). I think it doesn't matter which xxxMap() operator gets used after the first() operator and it always makes me wonder if it would be easier to reason about the code if there was an operator which just hides that.

someObservable$
    .pipe(
        firstMap(() => {
            // ...
        })
    )

If you think it's a useful addition, I would be happy to provide a PR for it.

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Hi, Nicholas!

First of all: great library and thank you for your work on rxjs!

Do you plan to merge (or maybe partially merge) operators from this library into rxjs v8 or higher?
Also, any thoughs/roadmap regarding upcoming yet-fuzzy Observable spec?

Thanks

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It seems like rxjs-report-usage is a command-line tool intended to be run be a developer if they so choose.

Having it as a runtime dependency adds a bunch of unnecessary code to deployed code.

The tool depends on babel which is a pretty big package, so it's more than just the little script itself, but also a decent chunk of babel

Could you please add the doOnSubscribe operator?

The doOnSubscribe operator registers an Action which will be called whenever an observer subscribes to the Observable.

I use this gist separately - https://gist.github.com/evxn/750702f7c8e8d5a32c7b53167fe14d8d

It would be great to see this operator as part of this library.

Additional Reference: StackOverflow: Observable.onSubscribe equivalent in RxJs

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There is some issue with npm distribution. Latest published version 9.6.1 is still missing package.json files for operators, observable and schedulers.

My best guess is that there is problem with dist:copy goal and cpy **/package.json ../dist/ --cwd=source/ --parents

I've tested it locally but maybe it behaves differently on build server.

I had all kinds of issues today with [email protected] and [email protected] with the error:

TypeError: Object(...) is not a function with Angular

I was only using endWith and pairwiseStartWith - which were easy to remove. I wasn't even deliberately using endWith from your library - it just decided to autocomplete it a while back.

Anyway I don't know if there's an incompatibility with the 9.5.0 library - but everything magically worked when I removed the code.

The odd thing was my browser completely locked up and that made everything super hard to debug. Just wanted to point it out in case it's obvious to you what happened - it's not holding me up anymore but wanted to pass it on.

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Currently some of the custom operators in rxjs-etc import rxjs core operators by using the rxjs/add patching modules. This leaks implementation details and means it's now possible that someone may depend on those core operators existing on the Observable prototype, but not import them. If rxjs-etc would suddenly stop patching a particular core operator it would be a breaking change.

Instead, you can import the operators directly and using call:

import { from } from "rxjs/observable/from"; 
import { concat } from "rxjs/operator/concat"; 

export function endWith(...args) { 
     let scheduler = args[args.length - 1];
     if (isScheduler(scheduler)) { 
         args.pop(); 
     } else { 
         scheduler = null; 
     } 
     return (source) => concat.call(source, from(args, scheduler)); 
 } 

I imagine you already realized this since it's apparent you know RxJS well. Mostly recording here to track. 😄 Ideally I would just do this for you cause it's relatively easy, but I don't have much OSS time right now (recovering from surgery still)

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Hey! I would suggest a new operator which behaves like switchMap but also completes outer observable in case of completion of inner. For more details please see ReactiveX/rxjs#7036

If you agree but have no time I could try make a PR thanks to support from @josepot but I have to know the name for this operator.

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Hi,

I have a combiner I've been shopping around for the right place to contribute to, I didn't notice anything in your library which appeared to do the same, but this seems like the appropriate place for such a thing:

https://gist.github.com/spaceribs/738ec30dac2874d5ba9f7718208410e9

Please take a look and let me know if it makes sense to put up a pull request for this feature.