release(crates): v0.84.0

[oxc-bot]

[0.84.0] - 2025-08-30

💥 BREAKING CHANGES

• df8e639 allocator: [BREAKING] Put AllocatorPool behind pool feature (refactor(allocator)!: put AllocatorPool behind pool feature #13373) (overlookmotel)

🚀 Features

• 95d4311 ecmascript: Check side effects inside static blocks (feat(ecmascript): check side effects inside static blocks #13404) (sapphi-red)
• 2d0414d minifier: Remove pure function calls when the return value is not used (feat(minifier): remove pure function calls when the return value is not used #13403) (sapphi-red)
• c557854 ecmascript: Support MayHaveSideEffects for Statements (feat(ecmascript): support MayHaveSideEffects for Statements #13402) (sapphi-red)

🐛 Bug Fixes

• 7ee19e2 transformer/styled-components: Remove leading whitespace when literal starts with block comment containing interpolation in CSS minification (fix(transformer/styled-components): remove leading whitespace when literal starts with block comment containing interpolation in CSS minification #13391) (overlookmotel)
• cf5175c transformer/styled-components: Remove unnecessary whitespace when removing block comments in CSS minification (fix(transformer/styled-components): remove unnecessary whitespace when removing block comments in CSS minification #13390) (overlookmotel)
• 3e902a0 minifier: Keep argument spread side effects against empty functions (fix(minifier): keep argument spread side effects against empty functions #13401) (sapphi-red)
• fd3233c semantic: Flag super in function inside ObjectExpression (fix(semantic): flag super in function inside ObjectExpression #13325) (overlookmotel)

🚜 Refactor

• 84a584c semantic: Clarify logic when checking super (refactor(semantic): clarify logic when checking super #13324) (overlookmotel)

[graphite-app]

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[github-actions]

Monitor Oxc

suite	result
(compressor)	❌
Isolated Declarations	❌
(dce)	❌
(codegen)	❌
(transformer)	❌
(mangler)	❌
(whitespace)	❌

[codspeed-hq]

CodSpeed Instrumentation Performance Report

Merging #13412 will not alter performance

_{Comparing release/crates-1756530444 (125c015) with main (7ee19e2)}

Summary

✅ 38 untouched benchmarks