Google Analytics - Async Script Attribute doesn't parse correctly.

[MagicanFury]

"version": "0.1.6", "resolved": "https://registry.npmjs.org/dom-parser/-/dom-parser-0.1.6.tgz", "integrity": "sha512-3nVRKbLEwmGfghLoeT1dxlK/0votalnOfasP+8VCHYDfDuCETY4LeMblfOeqww6XZk2ymZ1Uewy/hVad6Dy3yw=="

When including <script async src="https://www.googletagmanager.com/gtag/js?id=G-XXXXXXXXX"> The script text gets turned into: script async src="https://www.googletagmanager.com/gtag/js?id=G-XXXXXXXXX">

I'm using the following code to fetch the html back: htmlNode.outerHTML

[MagicanFury]

A workaround is to set a value to the attribute <script async="" src="https://www.googletagmanager.com/gtag/js?id=G-XXXXXXXXX">