release: v1.9.4

[Conaclos]

Summary

1. Add a changelog entry for every Pull Request that lacks one.
   You can filter merged PRs that don't update the changelog.
   Read our guidelines for editing the changelog.

2. Based on the changelog, determine which version number to use.
   See our versioning guide for more details.

3. Rename Unreleased to <version> (iso-date) in the changelog.

4. Update version in Biome's package.json if applicable.

5. Update to the same version in all crates if you publish crates. (Cargo.toml and crates/**/Cargo.toml)

6. Linter rules have a version metadata directly defined in their implementation.
   This field is set to next for newly created rules.
   This field must be updated to the new version.

7. Update the website with the new version number:
   BIOME_VERSION=<version> just gen-web.
   This will also copy the configuration schema in the right place.

8. Once the PR is merged, the CI will trigger the Release: * workflows. Once these workflows finish compiling the final artefact, they need to be approved manually.

[ematipico]

@Conaclos The PR #4301 wasn't supposed to be merged, because it's a new feature. We should revert it, and merge it once we finished with bug fixes.

[codspeed-hq]

CodSpeed Performance Report

Merging #4320 will not alter performance

_{Comparing release/1.9.4 (9d71150) with main (1303f99)}

Summary

✅ 101 untouched benchmarks

[Conaclos]

The PR #4301 wasn't supposed to be merged, because it's a new feature. We should revert it, and merge it once we finished with bug fixes.

You are right. I reverted the change in the PR. I think we can merge it today :)

[github-actions]

Parser conformance results on

js/262

Test result	main count	This PR count	Difference
Total	48420	48420	0
Passed	47212	47228	✅ ⏫ +16
Failed	1208	1192	✅ ⏬ -16
Panics	0	0	0
Coverage	97.51%	97.54%	+0.03%

🎉 Fixed (16):

test/built-ins/AsyncDisposableStack/prototype/defer/length.js
test/built-ins/AsyncDisposableStack/prototype/defer/name.js
test/built-ins/AsyncDisposableStack/prototype/defer/not-a-constructor.js
test/built-ins/AsyncDisposableStack/prototype/defer/prop-desc.js
test/built-ins/AsyncDisposableStack/prototype/defer/this-does-not-have-internal-asyncdisposablestate-throws.js
test/built-ins/AsyncDisposableStack/prototype/defer/this-not-object-throws.js
test/built-ins/DisposableStack/prototype/defer/length.js
test/built-ins/DisposableStack/prototype/defer/name.js
test/built-ins/DisposableStack/prototype/defer/not-a-constructor.js
test/built-ins/DisposableStack/prototype/defer/prop-desc.js
test/built-ins/DisposableStack/prototype/defer/this-does-not-have-internal-disposablestate-throws.js
test/built-ins/DisposableStack/prototype/defer/this-not-object-throws.js
test/staging/explicit-resource-management/async-disposable-stack-adopt-and-defer-not-callable.js
test/staging/explicit-resource-management/async-disposable-stack-defer-on-disposed-stack.js
test/staging/explicit-resource-management/async-disposable-stack-defer.js
test/staging/explicit-resource-management/disposable-stack-adopt-and-defer.js

jsx/babel

Test result	main count	This PR count	Difference
Total	40	40	0
Passed	37	37	0
Failed	3	3	0
Panics	0	0	0
Coverage	92.50%	92.50%	0.00%

symbols/microsoft

Test result	main count	This PR count	Difference
Total	6578	6578	0
Passed	2204	2204	0
Failed	4374	4374	0
Panics	0	0	0
Coverage	33.51%	33.51%	0.00%

ts/babel

Test result	main count	This PR count	Difference
Total	680	680	0
Passed	607	607	0
Failed	73	73	0
Panics	0	0	0
Coverage	89.26%	89.26%	0.00%

ts/microsoft

Test result	main count	This PR count	Difference
Total	18489	18489	0
Passed	14154	14153	❌ ⏬ -1
Failed	4335	4336	❌ ⏫ +1
Panics	0	0	0
Coverage	76.55%	76.55%	-0.01%

🔥 Regression (2):

compiler/bluebirdStaticThis.ts
compiler/underscoreTest1.ts

🎉 Fixed (1):

compiler/funduleUsedAcrossFileBoundary.ts