Benchmarks are broken by RemovePaintState benchmark

[andycalder]

It appears that the "version" benchmarks have been broken since b01a5d3. The bug made it in to the v0.53.0 release so it's impossible to benchmark feature work against master or release. I have traced the problem to a bad export here (should be export default). The benchmark looks like it might be incomplete because there are three unused classes.

mapbox-gl-js version: master and v0.53.0

browser: All

Steps to Trigger Behavior

1. Start the benchmarks server.
2. Go to http://localhost:9966/bench/versions.

Expected Behavior

No error.

Actual Behavior

TypeError: RemovePaintState$1 is not a constructor.

[ryanhamley]

Thanks for reporting this @andycalder. This is fixed now but the release branch will contain the bug until our next official release in a couple weeks. You can work around the release branch for the time being by changing https://github.com/mapbox/mapbox-gl-js/blob/master/bench/versions/index.html#L22 to .then(pkg => [ 'master'])). This will then run your current branch only against master and you shouldn't see any further errors.