Add filename to transform error

[JLHwung]

Q	A
Fixed Issues?	Fixes #10502, fixes #10505
Patch: Bug Fix?	👍
Tests Added + Pass?	Yes
License	MIT

Previous art: In the parsing stage babel-core will add filename to the error message

babel/packages/babel-core/src/transformation/normalize-file.js

Line 145 in 94fcabc

err.message = `${filename}: ${err.message}\n\n` + codeFrame;

In this PR we add filename to the error message to both transforming phrase and generating phrase. It should help developer debug which file actually causes babel transformer/generator to throw.

[hzoo]

awesome!!

aside: maybe later we can think about normalizing error messages or moving into util (are there other scenarios where no filename is thrown? or maybe relating to the config used)

[JLHwung]

maybe later we can think about normalizing error messages or moving into util

I think it is still slightly early to extract the error messages processing into separate utils. I would suggest refactoring when we are working on the debug mode error message.

[jrop]

@JLHwung @hzoo Thanks guys! I definitely was not expecting a fix this quick. Thank you much!

[hzoo]

Same haha! I think not being to know the file where the error is happening to due an internal error (not syntax error) would be pretty bad on our part so best to make filing an issue easy! 🙌