String Interpolation error with escaped strings

[Proculopsis]

Full example here in the Playground: https://goo.gl/VWEkV5

The transpiler isn't consistent with native JavaScript when using the escaping character.

For example:

\0 == "\0" but \0000 != "\0000"

[DanielRosenwasser]

This is either a bug or a symptom/duplicate of #396.

[mhegazy]

PRs appreciated.

[Kingwl]

ping @mhegazy and @DanielRosenwasser
what is the correct behavior?

[chuckjaz]

This affects ts.createLiteral() in transformers as well.

I wouldn't mind giving a crack at a PR if you can direct me to the cases that the escapeString() was trying to address.

[weswigham]

@chuckjaz what's your specific problem? That transpiled strings get rewritten at all, or a problem with their meaning? We recently fixed a bug to do with octals in transpiled strings which may cover your problem?

[weswigham]

Yeah, #22335 may have fixed this; #21828 probably should have been marked as a dupe of this.

[chuckjaz]

That appears to be the fix we need, we were running into the d2 case from #21828. The linked issue from our repository has a PR we are landing to work around the issue in 2.6 and 2.7. Is this landing in a point release for 2.7 or waiting until 2.8?

[weswigham]

It should be in the 2.8 RC, I believe, whenever that goes out (if it hasn't already).