@wingleung cc @addyosmani

const useMediaCapabilities = (mediaConfig, initialMediaCapabilities = {}) => { let mediaCapabilities = { supported, hasMediaConfig: !!mediaConfig }; mediaCapabilities = (mediaCapabilities.supported && mediaCapabilities.hasMediaConfig) ? navigator.mediaCapabilities.decodingInfo(mediaConfig) : { ...mediaCapabilities, ...initialMediaCapabilities }; return {mediaCapabilities}; }; 

I think navigator.mediaCapabilities.decodingInfo(mediaConfig) was considered synchronous method in above implementation but according to MediaCapabilities.decodingInfo() MDN doc, it's asynchronous method that returns a promise.

So I wonder if this hook returns false for supported property all the time.
And this highlights an issue with the tests which should be catching such problems.

@wingleung Would you mind addressing this issue? Thank you.