Events documentation

@leegee wrote:

Using the latest version of Ionic (3.9.2) on Windows 10, trying to use Events for the first time, I can’t get the code in the documentation to work.

import { Events } from 'ionic-angular';

// first page (publish an event when a user is created)
constructor(public events: Events) {}
createUser(user) {
  console.log('User created!')
  this.events.publish('user:created', user, Date.now());
}


// second page (listen for the user created event after function is called)
constructor(public events: Events) {
  events.subscribe('user:created', (user, time) => {
    // user and time are the same arguments passed in `events.publish(user, time)`
    console.log('Welcome', user, 'at', time);
  });
}

Error:

Uncaught (in promise): TypeError: Cannot read property 'subscribe' of undefined

What have I over-looked?

TIA
Lee

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