Thanks for putting this together!! Tested it out with https://regexr.com:

Ideally this would:

• Not have an extra space in the first case
• Remove the comma in the second case

However, nobody should be seeing the output of this, so it's only a nit — I don't believe either of these would cause any issues :)

@ahaywood, any thoughts? This is all good from my end!

Ideally this would:

• Not have an extra space in the first case
• Remove the comma in the second case

@arimendelow Completely agree, and for a split second i was aiming for that. But then realized it increases the RegEx's complexity and really no one ever sees this (i wouldn't even know where to look for the actual generated file).

Then again, i'm surprised the transpiler stumbles over leading commas, but is fine with trailing ones. No clue if that is allowed by any leniency setting somewhere in the stack config, whether it's actually allowed by the language spec, and what the potential risk that a future RW upgrade can make the issue reappear is.

Thus, by any means, i'm happy for anyone to improve this PR in that case.

Yup, agreed with everything you said!! I think you'd need to look at the transpiled code, ie if you turn off source maps you should see it. But yeah, nobody expects that to be pretty anyway :p