Ionic cryptocompare

import { HttpClient } from '@angular/common/http';
import { Injectable } from '@angular/core';
import { Socket } from 'ng-socket-io';
import { Subject } from 'rxjs/Subject';

/*
  Generated class for the CryptoSocketProvider provider.

  See https://angular.io/guide/dependency-injection for more info on providers
  and Angular DI.
*/
@Injectable()
export class CryptoSocketProvider {

  constructor(private socket: Socket) {
    socket.emit('SubAdd', { subs: ['0~Poloniex~BTC~USD'] } );
    let subject = new Subject();
   


    socket.on('m', function(currentData) {
        subject.next(currentData);
    });
    

    // use else where to subscribe
    subject.subscribe(
      (msg) => console.log('message received: ' + msg),
      (err) => console.log(err),
      () => console.log('complete')
    );
  }

}