fix(js_formatter): ensure comments before async keyword are placed before it

[ah-yu]

Summary

Closes #1406

Ensure the comments before the async keyword are placed before it. If the following_token of the comment is async keyword then attach the comment to the preceding node

class Foo {
   @decorator()
   /* comment */async method(){}
}

// before fix
class Foo {
    @decorator()
    async /* comment */ method() {}
}

// after fix
class Foo {
    @decorator()
    /* comment */
    async method() {}
}

// prettier
class Foo {
    @decorator()
    /* comment */
    async method() {}
}

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[ah-yu]

Original code

	@decorator.method(value) /*before*/
	/*after*/ async method() {}

The behavior is the same as Prettier

[denbezrukov]

It guess it's a regression.
Prettier playground

[ah-yu]

Here is the original code. It has a decorator above.

biome/crates/biome_js_formatter/tests/specs/js/module/decorators/class_members_call_decorator.js

Lines 70 to 71 in d45bc75

	@decorator.method(value) /*before*/
	/*after*/ async method() {}

biome playground

prettier playground

[denbezrukov]

Sorry, you're right(:

[codspeed-hq]

CodSpeed Performance Report

Merging #1500 will degrade performances by 7.43%

_{Comparing ah-yu:async_method (0ccbf36) with main (7042ef0)}

Summary

⚡ 1 improvements
❌ 1 regressions
✅ 91 untouched benchmarks

⚠️ Please fix the performance issues or acknowledge them on CodSpeed.

Benchmarks breakdown

	Benchmark	main	ah-yu:async_method	Change
❌	router.ts[uncached]	12.6 ms	13.6 ms	-7.43%
⚡	eucjp.json[uncached]	5.5 ms	5.1 ms	+6.79%

[denbezrukov]

Could you please check if we need to do the same thing for generators?🙏
We can do it in the next PR.
https://biomejs.dev/playground/?code=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%3D

[ah-yu]

Generators have the same issue. I will submit another PR to fix it.

[Conaclos]

Looks good to me! We have just released a patch version. Could you rebase your branch on main?

[ah-yu]

Could you rebase your branch on main?

Done