rxjs in Angular2 is missing the observable.interval function

Currently, I am attempting to utilize the interval method of an observable; however, I consistently encounter the following error message:

 Property 'interval' does not exist on type 'Observable<any>'.

I have included the following imports in my code:

import "rxjs/Rx";
import "rxjs/add/observable/interval";
import "rxjs/observable/IntervalObservable";

Answer №1

To utilize the interval method, you must import the Observable class in one of the following ways:

import {Observable} from 'rxjs/Rx';

or

import {Observable} from 'rxjs/Observable';
import 'rxjs/add/observable/interval';

Answer №2

If you're looking to generate an interval (Observable) using rxjs version 6.2.1:

import { interval } from 'rxjs';
// instead of:
// import { Observable } from 'rxjs/Observable';
// import 'rxjs/add/observable/interval';

const timer = interval(1000); 

// instead of:
// const timer = Observable.interval(1000);

Answer №3

Here's a way to achieve the desired result:

"rxjs": "6.3.3"
"rxjs-compat": "^6.5.5"

import { Component, OnInit } from '@angular/core';
import { interval } from 'rxjs';

@Component({
  selector: 'app-page',
  templateUrl: './page.component.html',
  styleUrls: ['./page.component.css']
})
export class PageComponent implements OnInit {

  constructor() { }

  ngOnInit() {
    const myNumber = interval(1000);
    myNumber.subscribe(
      (number: number) => {
        console.log(number);
      }
    );
  }

}

Answer №4

import {Observable} from 'rxjs/Observable';
import 'rxjs/Rx'

  defineVariable:number;
  startFunction() {
    const timer = Observable.interval(1000);
    timer.subscribe((count : number)=>{
      this.defineVariable=count;
    });

    }

Answer №5

import { Observable } from 'rxjs/Observable';
import 'rxjs/add/observable/interval';
//This snippet uses the interval function from RxJS library
ngOnInit() {
    const myNumber = Observable.interval(1000);
    myNumber.subscribe(
      (number: number) => {
        console.log(number);
      }
    );

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