Add .raw or .extra.raw to Identifier

[fisker]

💻

• Would you like to work on this feature?

What problem are you trying to solve?

I'm adding support for "Explicit Resource Management" in Prettier.

There is a test added in #14968

for (using o\u0066 of of);

Since

for (using of of of);

is invalid, so we can't print o\u006 as of, and there seems no easy way to fix this.

I've try to convince ESTree to add .raw, but most likely that's not going to happen. link

I'm not sure what's the best to do. Let me know what you think.

Describe the solution you'd like

Change Identifer to

{
	"type": "Identifer",
	"value": "of",
	"raw": "o\u0066"
}

Describe alternatives you've considered

We can slice from the original input, but it's difficult because of .typeAnnotation exists.

Documentation, Adoption, Migration Strategy

No response

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[liuxingbaoyu]

Can prettier not support this? I really can't imagine anyone doing this in real code. 😂

I personally have no problem with adopting the option to enable appending raw to extra.
But I'm concerned that this will have a performance impact, even for the prettier.

By the way, prettier/prettier#8917 Although it was reopened, it was not unlocked.