Dashjs3.0.1 OfflineStreamEvent missing in typings index.d.ts

Created by: jepiqueau

Environment

• [] The MPD passes the DASH-IF Conformance Tool on https://conformance.dashif.org/
• [] The stream has correct Access-Control-Allow-Origin headers (CORS)
• [] There are no network errors such as 404s in the browser console when trying to play the stream
• [] The issue observed is not mentioned on https://github.com/Dash-Industry-Forum/dash.js/wiki/FAQ
• [] The issue occurs in the latest reference client on http://reference.dashif.org/dash.js/ and not just on my page

• Link to playable MPD file:
• Dash.js version: 3.1.0
• Browser name/version: Google Chrome Version 81.0.4044.138 (Build officiel) (64 bits)
• OS name/version: Windows 10 64bit

Steps to reproduce

1. Please provide clear steps to reproduce your problem
2. If the bug is intermittent, give a rough frequency if possible

Observed behaviour

When building a typescript component using dash.js i got the following error

Console output

TypeScript
Cannot find name  'OfflineStreamEvent'
./node_modules/dashjs/build/typings/index.d.ts
 on(type: MetricChangedEvent['type'], listener: (e: MetricChangedEvent) => void, scope?: object): void;
 on(type: OfflineStreamEvent['type'], listener: (e: OfflineStreamEvent) => void, scope?: object): void;
 on(type: PeriodSwitchEvent['type'], listener: (e: PeriodSwitchEvent) => void, scope?: object): void;

This is not happening with dashjs@3.0.3