Can't run client side library

[Unitech]

After having run npm run build + npm run dist and included the minified file into a html page, I get the following error when instantiating the Keymetrics class:

keymetrics.es5.min.js:1 Uncaught TypeError: this._queueWorker.unref is not a function
    at new e (keymetrics.es5.min.js:1)
    at new t (keymetrics.es5.min.js:1)
    at main.js:3

[nayrrod]

Same for me. Strangely this only happens on staging.

[vmarchaud]

Fixed