WebXR Polyfill
Use the WebXR Device API today providing fallbacks to native WebVR 1.1
...The polyfill reflects the stable version of the API which has shipped in multiple browsers. If you are writing code against the WebVR 1.1 spec, use webvr-polyfill, which supports browsers with the 1.0 spec, or no implementation at all. It is recommended to write your code targeting the WebXR Device API spec however and use this polyfill as browsers begin to implement the latest changes.