rxjs_1.Observable.create(...).finally is not a function

[gregoryjjb]

Possible noob question, I have the minimum possible Undux store setup but when I call withStore I get that error.

My store (taken from readme example):

import { connect, createStore } from 'undux'

// Create a store with an initial value.
let store = createStore({
    sessionKey: '',
    sessionFetching: false,
})

export let withStore = connect(store);

Where I use withStore:

import React, { Component } from 'react';
import { withStore } from 'utils/store';

const App = withStore(({ store }) =>  // This call causes the error
	<div>
		<h1>gChat</h1>
		<p>Session:{}</p>
	</div>
)

export default App;

The error (x2):

TypeError: rxjs_1.Observable.create(...).finally is not a function
Emitter../node_modules/typed-rx-emitter/index.js.Emitter.createChannel

I'm using regular JS with create-react-app, not typescript; is that the problem? Any advice is much appreciated.

(Also great library, exactly what I was looking for after the verbosity of Redux!)

[bcherny]

Hi @gregdumb! From the error message, it's not clear what's throwing the error. Think you can put a self-contained, reproducible example in a zip (or better yet, on Stackblitz or Codepen) so I can reproduce what you're seeing?

As a first step, how are you including RxJS in your build?

[gregoryjjb]

As a first step, how are you including RxJS in your build?

You made me realize that I had installed RxJS ^6.0.0, so I tried with ^5.0.0 and that works! Is 6 not supported?

Edit: made branch here that demonstrates the break.

[bcherny]

Good to hear! It seems like Rx6 is still in RC, but in the meantime I will do a couple of things:

1. Give a better error if Rx 5 is missing, so you can find out quickly Better error when Rx5 is missing #24
2. Investigate supporting both Rx 5 and 6 concurrently
3. Investigate making the Rx library pluggable investigate using a lighter weight rx library than rxjs #8

[bcherny]

@gregdumb Undux 4.3 is shipped, with out of the box support for both Rx6 and Rx5.

[gregoryjjb]

Wow sweet! Appreciate the fast turnaround.