Rxjs: [ Docs @ reactivex.io/rxjs/ is for v5; not v6 ]

[xemasiv]

RxJS version:

^6.1.0

Code to reproduce:

const Rx = require('rxjs/Rx');

As of http://reactivex.io/rxjs/manual/installation.html

Expected behavior:

It should work, right?

Actual behavior:

Mon May 14 2018 22:04:32 GMT+0000 
 Error: Cannot find module 'rxjs-compat'
    at Function.Module._resolveFilename (module.js:543:15)
    at Function.Module._load (module.js:470:25)
    at Module.require (module.js:593:17)
    at require (internal/module.js:11:18)
    at Object.<anonymous> (/home/xemasiv/pac-1234/node_modules/rxjs/Rx.js:6:10)
    at Module._compile (module.js:649:30)
    at Object.Module._extensions..js (module.js:660:10)
    at Module.load (module.js:561:32)
    at tryModuleLoad (module.js:501:12)
    at Function.Module._load (module.js:493:3)

Additional information:

It's like #3629 but this time w/o tslint or any IDE involved, just bare ubuntu 17 w/ node 9.8.0

Doing yarn add rxjs-compat made it ran for me.

It seems like as stated in #3629, the rxjs-compat package is required for 6.0.0

---

Related to #3684, #3710

Keeping this open for now for easier discovery for lads from RxJS 5 docs.

I really think the v6 branch should've been kept at rxjs@next or similar until the v5 & v6 docs were updated. Just a funny mistake anyways, nothing serious.

Are you from http://reactivex.io/rxjs/ and currently having problems? That site is docs for RxJs v5, and maybe you have installed v6 and ya need to see this: https://github.com/ReactiveX/rxjs/blob/master/MIGRATION.md

[erikrenberg]

Does that error happen for an empty app?

In my case I get the same error, but I am migrating from v5, and then the migration guide describes the steps for migrating using this rxjs-compat package (I haven't tried those steps yet, just found it). https://github.com/ReactiveX/rxjs/blob/master/MIGRATION.md

[martinsik]

I think this is expected behaviour. The rxjs-compat package is only for compatibility reasons and to make upgrading to RxJS 6 easier but you're not supposed to be using it in the future (so I'd better avoid it completely).

This is the file you're importing when using 'rxjs/Rx' https://github.com/ReactiveX/rxjs/blob/master/legacy-reexport/Rx.ts and as you can see it just reexports everything from rxjs-compat.

So in fact the problem is that you shouldn't be importing from 'rxjs/Rx' at all and then you won't need rxjs-compat either.

Btw, information at http://reactivex.io/rxjs/manual/installation.html is outdated and seems to be for RxJS 5.4.

[itaied246]

@martinsik So how should we import?

I'm also just trying to create Observable.fromEvent() but nothing seems to work...

[achyutjhunjhunwala]

@martinsik So can you please help us where should we import from then

import Rx from 'rxjs/Rx';
const { interval, fromPromise } = Rx.Observable;

I am using this and its throwing same error

[martinsik]

@achyutjhunjhunwala @itaied246 It's all described here https://github.com/ReactiveX/rxjs#installation-and-usage

[denisw]

The documentation at http://reactivex.io/rxjs still mentions all of the old import paths and none of the new ones. Could it be that these documentation pages haven't been updated for v6 at all?

[itaied246]

Yes it seems as the docs aren't up to date.
I managed to make it work this way:

import {fromEvent} from "rxjs";

[hariseldon78]

what's the correct way to import fromPromise? i'm only able to do this:
import {fromPromise} from 'rxjs/internal-compatibility'

[erikrenberg]

I suspect you use the from creation function mentioned in the migration guide that I linked above.

import { from } from 'rxjs';

const observable = from(new Promise((resolve => {
  resolve('done');
})));

Or simply use the v5 branch of rxjs until the docs have been updated for v6.

[xemasiv]

Related to #3684, #3710

Keeping this open for now for easier discovery for lads from RxJS 5 docs.

I really think the v6 branch should've been kept at rxjs@next or similar until the v5 & v6 docs were updated. Just a funny mistake anyways, nothing serious.

Are you from http://reactivex.io/rxjs/ and currently having problems? That site is docs for RxJs v5, and maybe you have installed v6 and ya need to see this: https://github.com/ReactiveX/rxjs/blob/master/MIGRATION.md

[benlesh]

Okay, so for now, I have http://reactivex.io/rxjs redirecting to the newer docs (with an HTML redirect unfortunately, until we have the new domain setup)

Hopefully that will end the confusion. Sorry, everyone, it's a work in progress.

[achyutjhunjhunwala]

Since i commented my concern here, i am posting what i did to solve my issue. In case some one arrives at this post, will know faster the solution -
Package.json - "rxjs": "^5.5.10",

Code -
import { Observable } from 'rxjs/Rx';
const { interval, fromPromise } = Observable;