space_after_anon_function doesn't work with anon async functions

[laggingreflex]

Expected:

var c = async () {}

#608 related?

[bitwiseman]

Kinda related, but not really. Functionally, this is an anonymous function so it should still be treated as such. I'd say this is more of a bug, whereas #608 is definitely a new feature (with a new setting to go with it. async es6, right?

[laggingreflex]

I like ESLint's "space-before-function-paren" which covers all these (anon, named, anon async, named async) under one setting. Thoughts?

[bitwiseman]

@laggingreflex - seems reasonable. We could use your help with this if you have the time.

[xueqingxiao]

@bitwiseman any progress? Related: HookyQR/VSCodeBeautify#129

[MacKLess]

I ran this in v1.8.6 and it appears to force a space between "async" and the following parens as default. @laggingreflex and @xueqingxiao, please feel free to review this and let me know if you disagree. In the meantime, I'm going to mark this as resolved.