Cannot find rxjs select operator used by ngrx store.select

Question

Cannot find select operator from rxjs library.

As I understand and explained here, ngrx store uses select operator from rxjs library when we call store.select method. The way it is currently working is if I imort the whole rxjs library:

import 'rxjs/Rx';

But this imports the whole rxjs operators, I only want to import the operators I need.

If I exclude rxjs/Rx import, get this error:

TypeError: this.store.select(...).first is not a function

I have also done a global search in npm rxjs package directory and that folder doesn't have any file with select in it. Really confusing.

The `select` operator is part of [`@ngrx/core`](https://github.com/ngrx/core/blob/v1.2.0/src/operator/select.ts) and is [bound to the `Store`](https://github.com/ngrx/store/blob/v2.2.1/src/store.ts#L23). Your error relates to the `first` operator, as Martin has pointed out in his answer. — cartant, Mar 14 '17 at 21:08

score 2 · Accepted Answer · answered Mar 14 '17 at 18:03

2

If you don't want to import the entire library you can pick only the operators/Observables you want with for example:

import 'rxjs/add/operator/first';

You can see the full list here: https://github.com/ReactiveX/rxjs/tree/master/src/add/operator

answered Mar 14 '17 at 18:03

martin

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Thanks martin. Worked. – Nexus23 Mar 14 '17 at 21:15

score 0 · Answer 2 · answered Apr 29 '19 at 06:46

0

Please try as well

npm un --save rxjs
npm un --save rxjs-compat

npm i --save rxjs@6.2.2
npm i --save rxjs-compat@6.2.2

answered Apr 29 '19 at 06:46

Gopala Raja Naika

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Cannot find rxjs select operator used by ngrx store.select

2 Answers2