Optimize supportsNativeFetch() with a fast path that avoids DOM I/O (#2326)
Optimize supportsNativeFetch() with a fast path that avoids DOM I/O (#2326)

* Optimize supportsNativeFetch() with a fast path that avoids DOM I/O

* Fix dumb typo / bad keypress

getsentry/raven-js,getsentry/raven-js,getsentry/raven-js,getsentry/raven-js