Major Bug - Always overrides native CustomEvent across all browsers

The polyfill test always fails and as a result the browser never uses the native implementation even when it is available.

The issue is with this code: https://github.com/krambuhl/custom-event-polyfill/blob/71749f01e4e8e3e7e52ffb646bb50c4f78f87961/custom-event-polyfill.js#L7-L15

Instead of

var ce = new window.CustomEvent('test'); 

is should be

var ce = new window.CustomEvent('test', {cancelable: true});

otherwise ce.defaultPrevented always equals to false and the error is always thrown.

[kumarharsh]

In the meanwhile, you can use this fork which has @andrejpavlovic and @shrpne’s changes https://www.npmjs.com/package/@playlyfe/custom-event-polyfill

[krambuhl]

PR has been merged, closing this ticket.