release(crates): v0.48.1

[oxc-bot]

[0.48.1] - 2025-01-26

Features

• b7f13e6 ast: Implement utf8 to utf16 span converter (feat(ast): implement utf8 to utf16 span converter #8687) (Boshen)
• 6589c3b mangler: Reuse variable names (feat(mangler): reuse variable names #8562) (翠 / green)
• 29bd215 minifier: Minimize Infinity.toString(radix) to 'Infinity' (feat(minifier): minimize Infinity.toString(radix) to 'Infinity' #8732) (Boshen)
• e0117db minifier: Replace const with let for non-exported read-only variables (feat(minifier): replace const with let for non-exported read-only variables #8733) (sapphi-red)
• 9e32f55 minifier: Evaluate Math.sqrt and Math.cbrt (feat(minifier): evaluate Math.sqrt and Math.cbrt #8731) (sapphi-red)
• 360d49e minifier: Replace Math.pow with ** (feat(minifier): replace Math.pow with ** #8730) (sapphi-red)
• 2e9a560 minifier: NaN.toString(radix) is always NaN (feat(minifier): NaN.toString(radix) is always NaN #8727) (Boshen)
• cbe0e82 minifier: Minimize foo(...[]) -> foo() (feat(minifier): minimize foo(...[]) -> foo() #8726) (Boshen)
• e9fb5fe minifier: Dce pure expressions such as new Map() (feat(minifier): dce pure expressions such as new Map() #8725) (Boshen)

Bug Fixes

• 0944758 codegen: Remove parens from new (import(''), function() {}) (fix(codegen): remove parens from new (import(''), function() {}) #8707) (Boshen)
• 33de70a mangler: Handle cases where a var is declared in a block scope (fix(mangler): handle cases where a var is declared in a block scope #8706) (翠 / green)
• d982cdb minifier: Unknown.fromCharCode should not be treated as String.fromCharCode (fix(minifier): Unknown.fromCharCode should not be treated as String.fromCharCode #8709) (sapphi-red)
• e7ab96c transformer/jsx: Incorrect isStaticChildren argument for Fragment with multiple children (fix(transformer/jsx): incorrect isStaticChildren argument for Fragment with multiple children #8713) (Dunqing)
• 3e509e1 transformer/typescript: Enum merging when same name declared in outer scope (fix(transformer/typescript): enum merging when same name declared in outer scope #8691) (branchseer)

Performance

• dc0b0f2 manger: Remove useless tmp_bindings (perf(manger): remove useless tmp_bindings #8735) (Dunqing)
• e472ced mangler: Optimize handling of collecting lived scope ids (perf(mangler): optimize handling of collecting lived scope ids #8724) (Dunqing)
• 8587965 minifier: Normalize undefined to void 0 before everything else (perf(minifier): normalize undefined to void 0 before everything else #8699) (Boshen)

Refactor

• 58002e2 ecmascript: Remove the lifetime annotation on MayHaveSideEffects (refactor(ecmascript): remove the lifetime annotation on MayHaveSideEffects #8717) (Boshen)
• 10e5920 linter: Move finishing default diagnostic message to GraphicalReporter (refactor(linter): move finishing default diagnostic message to GraphicalReporter #8683) (Sysix)
• 52a37d0 mangler: Simplify initialization of slots (refactor(mangler): simplify initialization of slots #8734) (Dunqing)
• 6bc906c minifier: Allow mutating arguments in methods called from try_fold_known_string_methods (refactor(minifier): allow mutating arguments in methods called from try_fold_known_string_methods #8729) (sapphi-red)
• bf8be23 minifier: Use Ctx (refactor(minifier): use Ctx #8716) (Boshen)
• 0af0267 minifier: Side effect detection needs symbols resolution (refactor(minifier): side effect detection needs symbols resolution #8715) (Boshen)
• 32e0e47 minifier: Clean up Normalize (refactor(minifier): clean up Normalize #8700) (Boshen)
• c792068 semantic: Simplify ScopeTree::iter_bindings (refactor(semantic): simplify ScopeTree::iter_bindings #8723) (Dunqing)

Testing

• 03229c5 minifier: Fix broken tests (test(minifier): fix broken tests #8722) (Boshen)

[graphite-app]

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[github-actions]

Monitor Oxc

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

[codspeed-hq]

CodSpeed Performance Report

Merging #8738 will not alter performance

_{Comparing release/crates-1737901141 (b9fd543) with main (29bd215)}

Summary

✅ 33 untouched benchmarks