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oxc-project__oxc/packages/codegen/CHANGELOG.md
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oxc-guard 894c8f9cd8 release(crates): oxc v0.148.0 (#26198) 
### 💥 BREAKING CHANGES

- a31567a allocator: [**BREAKING**] Make `Allocator::cursor_ptr` and `data_end_ptr` private (#26081) (overlookmotel)

### 🚀 Features

- 784e9fa minifier: Invert `!0` and `!1` in place for boolean context to `1` and `0` (#26050) (Armano)
- 1e902cc minifier: Expand fold leading assignments into the var decl (#26142) (Armano)
- 3ed4f6a minifier: Expand de morgan's optimization to allow move of `!` (#25930) (Armano)
- 5672585 parser: Attach all comments to nodes (#25944) (camc314)

### 🐛 Bug Fixes

- 4adfb4c semantic: Validate chained continue labels (#26157) (camc314)
- b874f48 ecmascript: `Math.round` only exact half ties (#26150) (camc314)
- a625378 minifier: Coerce omitted `indexOf` search argument (#26149) (camc314)
- dc7398b ecmascript: Trim trailing whitespace in string to number (#26148) (camc314)
- 243b685 transformer/object-rest: Lower multiple declarators correctly (#26147) (camc314)
- dc09a3a parser: Avoid panic on escaped string export names (#26146) (camc314)
- e412cf2 linter: Clamp invalid JS plugin locations (#26144) (camc314)
- c3dedc9 semantic: Skip function body bindings in parameters (#26099) (Dunqing)
- e74de61 transform-react: Match Babel diagnostic reporting (#26128) (Boshen)
- d5163d0 parser: Correctly classify unapplied pure annotations (#26084) (camc314)
- 8531b9b linter/plugins: Alter method for obtaining mutable `Program` when sending AST to JS plugins (#26077) (overlookmotel)
- 9b51658 regular_expression: Allow oversized decimal escape for Annex B (#26070) (leaysgur)
- c8de4df regular_expression: Reject oversized backreferences (#26055) (camc314)

### ⚡ Performance

- ac4785a diagnostics: Use fixed ANSI styles (#26130) (Boshen)
- 07a0793 packages/codegen: Flatten output in chunks (#26109) (overlookmotel)
- 487427a packages/codegen: Faster string flattening (#26108) (overlookmotel)
- 7785583 packages/codegen: Ensure indent strings are flattened (#26107) (overlookmotel)
- 0dd4db3 packages/codegen: Store mapping positions in an `Int32Array` (#26085) (overlookmotel)
2026-09-01 08:15:07 +00:00

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Changelog

All notable changes to this package will be documented in this file.

The format is based on Keep a Changelog.

[0.148.0] - 2026-08-31

⚡ Performance

  • 07a0793 packages/codegen: Flatten output in chunks (#26109) (overlookmotel)
  • 487427a packages/codegen: Faster string flattening (#26108) (overlookmotel)
  • 7785583 packages/codegen: Ensure indent strings are flattened (#26107) (overlookmotel)
  • 0dd4db3 packages/codegen: Store mapping positions in an Int32Array (#26085) (overlookmotel)

[0.147.0] - 2026-08-24

🐛 Bug Fixes

  • 6c5ad1b codegen: Only add mapping names for PrivateIdentifiers which have changed (#25958) (overlookmotel)
  • a185ac3 codegen: Print # before private identifier in TS signature key (#25938) (overlookmotel)

⚡ Performance

  • 53f6270 packages/codegen: Eagerly initialize mapNames (#25979) (overlookmotel)
  • 5b43c60 packages/codegen: Split recording mappings into multiple functions (#25978) (overlookmotel)
  • cc947b5 packages/codegen: Reduce property lookups (#25977) (overlookmotel)
  • c22a9cc packages/codegen: Combine condition checks (#25976) (overlookmotel)
  • 215a6a5 packages/codegen: Add functions for writing/marking unnamed mappings (#25975) (overlookmotel)
  • 1004439 packages/codegen: Merge mark and write calls in printImportAttributes (#25972) (overlookmotel)
  • 94c8a34 packages/codegen: Remove node param from printString and printNonNegativeFloat (#25971) (overlookmotel)
  • 7e2b4b3 packages/codegen: printNonNegativeFloat write mapping directly (#25968) (overlookmotel)
  • 53ff080 packages/codegen: Remove lastWasPostfixClose (#25888) (overlookmotel)

📚 Documentation

  • 07de646 packages/codegen: Fix JSDoc comments on write* methods (#25966) (overlookmotel)
  • 3b09c04 packages/codegen: Clarify comment (#25959) (overlookmotel)

[0.146.0] - 2026-08-19

🐛 Bug Fixes

  • 526c2b3 codegen: Remove deprecated test APIs (#25889) (camc314)
  • 344a9b2 codegen: Align enum template sourcemaps (#25872) (camc314)

⚡ Performance

  • 8783524 packages/codegen: Remove loop from growMappingBuffer (#25886) (overlookmotel)
  • b6b14c0 packages/codegen: Remove redundant branch (#25885) (overlookmotel)
  • be6adf0 packages/sourcemap: Make location passed to recordSourceMapping always a number (#25884) (overlookmotel)
  • f720f15 packages/codegen: Take named-mapping only code off hot path in recordSourceMapping (#25883) (overlookmotel)
  • a734af5 packages/codegen: Remove redundant setting of last in printImportAttributes and printIf (#25882) (overlookmotel)
  • c6e44c6 packages/codegen: Combine 2 writes in printJSXElement (#25881) (overlookmotel)
  • 8801662 packages/codegen: Remove redundant mapping from printParams (#25880) (overlookmotel)

📚 Documentation

  • 5ad330e packages/codegen: Reformat comments (#25876) (overlookmotel)

[0.145.0] - 2026-08-18

💥 BREAKING CHANGES

  • 365274e packages/codegen: [BREAKING] printSync return an object (#25720) (overlookmotel)

🚀 Features

  • 6a7eb60 packages/codegen: Alter capitalization of sourceFilename option (#25854) (overlookmotel)
  • 300763f packages/codegen: Add full source map support (#25585) (camc314)
  • a4478e9 codegen: Add oxc-codegen package (#25488) (overlookmotel)

🐛 Bug Fixes

  • 0fbcf64 codegen: Validate sourcemap options (#25860) (camc314)
  • 4cc7ea4 codegen: Reject invalid indent options (#25807) (camc314)
  • 0c68b7f estree: Emit decorators on FormalParameterRest (#25582) (camc314)
  • 59e8895 codegen: Validate starting indent level (#25550) (camc314)

⚡ Performance

  • 5444cbf codegen: Skip escaping harmless < tokens (#25564) (camc314)

📚 Documentation

  • 58f7ab9 packages/codegen: Reformat docs and comments (#25848) (overlookmotel)
  • ce03ac1 packages/codegen: Fix JSDoc comments for printSync (#25722) (overlookmotel)
  • 386a699 packages/codegen: Correct JSDoc comment (#25716) (overlookmotel)
  • fd62354 codegen: Revamp package readme (#25560) (camc314)
  • ffa3153 codegen: Clarify raw transfer Node requirement (#25565) (camc314)
  • c5d4063 codegen: Clarify binary walk allocations (#25562) (camc314)
  • 5703d7a codegen: Correct stale printer comments (#25561) (camc314)
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