feat(es/transforms): Add renamer_keep_contexts

[mischnic]

Description:

When using renamer outside of hygiene (i.e. you want to continue using the AST), you want correct context contexts in some cases.

BREAKING CHANGE:

Related issue (if exists):

[changeset-bot]

🦋 Changeset detected

Latest commit: ee80f5c

The changes in this PR will be included in the next version bump.

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[codspeed-hq]

CodSpeed Performance Report

Merging #10907 will not alter performance

_{Comparing mischnic:mischnic/hygiene-stay-unique (ee80f5c) with main (6f5b72a)}

Summary

✅ 140 untouched benchmarks

[kdy1]

I think I need to configure a binary size CI action before merging this PR.
I'll copy one from rspack later this week

[kdy1]

I think I need to configure a binary size CI action before merging this PR.
I'll copy one from rspack later this week

[kdy1]

In case you have a local patch of SWC for turbopack, can you profile the binary size of turbopack with this patch?

[mischnic]

I can't measure a difference:

swc/main 4eab8e8:

$ ll packages/next-swc/native/next-swc.darwin-arm64.node
-rwxr-xr-x  1 niklas  staff   214M Jul 22 11:09 packages/next-swc/native/next-swc.darwin-arm64.node*
$ strip -x packages/next-swc/native/next-swc.darwin-arm64.node
$ ll packages/next-swc/native/next-swc.darwin-arm64.node
-rwxr-xr-x  1 niklas  staff   125M Jul 22 11:09 packages/next-swc/native/next-swc.darwin-arm64.node*

my fix f98cad2 but without any code change on Turbopack side:

$ ll packages/next-swc/native/next-swc.darwin-arm64.node
-rwxr-xr-x  1 niklas  staff   214M Jul 22 11:13 packages/next-swc/native/next-swc.darwin-arm64.node*
$ strip -x packages/next-swc/native/next-swc.darwin-arm64.node
$ ll packages/next-swc/native/next-swc.darwin-arm64.node
-rwxr-xr-x  1 niklas  staff   125M Jul 22 11:14 packages/next-swc/native/next-swc.darwin-arm64.node*

my fix f98cad2 and using renamer_keep_contexts:

$ ll packages/next-swc/native/next-swc.darwin-arm64.node
-rwxr-xr-x  1 niklas  staff   214M Jul 22 11:16 packages/next-swc/native/next-swc.darwin-arm64.node*
$ strip -x packages/next-swc/native/next-swc.darwin-arm64.node
$ ll packages/next-swc/native/next-swc.darwin-arm64.node
-rwxr-xr-x  1 niklas  staff   125M Jul 22 11:18 packages/next-swc/native/next-swc.darwin-arm64.node*

[mischnic]

Also, there is no overhead at all unless you're actually using renamer_keep_contexts because it compiles to the same code as before if you're only using type Target = Atom

[kdy1]

Can you write some descriptions as comments? (in the source code)_

[kdy1]

I don't get why this is $7.