track.getCapabilities is not available on FireFox.

[atuttle]

When attempting to use this library (via react-qr-reader) in Firefox, the error track.getCapabilities is not a function is thrown by this line:

browser/src/readers/BrowserCodeReader.ts

Line 94 in eaefab4

const capabilities = track.getCapabilities();

In my testing, track.getCapabilities is defined in Chrome, but not Firefox. For my purposes, it would be sufficient if the torch feature was assumed to be unavailable if getCapabilities is not defined.

[Aspyryan]

Yea could we get an error thrown that we could catch and have proper handling for?

[gregg-cbs]

Yeah still getting this error on firefox, it does not seem to affect functionality: