Changelog

[unreleased]

Bug Fixes

• (es/parser) Parse jsx entity (#10652) (bfd3bc5)

• (es/parser) Consider reseved ident in jsx name (#10647) (9262a59)

Performance

• (es/parser) Optimize next_token (#10654) (1be2ca0)

Refactor

• (es/lexer) Remove faster path for \t (#10650) (d6ac3b7)

[1.12.4] - 2025-06-20

Bug Fixes

• (es/minifier) Fix Buffer handling of minify() API (#10643) (cdf068e)

• (es/minifier) Fix arrow inlining (#10642) (7232c10)

• (es/parser) Don't be greedy in the end of jsx open el (#10637) (8a2c656)

• Update par-core and par-iter (#10629) (38f7d51)

• Fix CI (#10641) (9df98f7)

Refactor

• (es/parser) Cleanup (#10631) (c7c2035)

[1.12.3] - 2025-06-19

Bug Fixes

• (es/codgen) Emit leading comments of JSXExprContainer (#10627) (2d2162a)

[1.12.2] - 2025-06-19

Bug Fixes

• (ci) Fix build of @swc/minifier (0dc5244)

• (es/codegen) Fix .map path when using output_path (01e5bd1)

• (es/parser) Allow type ann in jsx expr child (#10626) (48f576c)

• (swc) Fix wrong caching of resolvers regarding file exts (#10615) (68aacd1)

• (ts/isolated-dts) Fix usage dependency (#10621) (b3677d3)

• (ts/isolated-dts) Emit properties in overloaded constructor params (#10623) (6634ef1)

Features

• (swc_common) Allow returning None in try_lookup_source_file (#10625) (d8e2405)

Performance

• (atoms) Improve atom! for inlinable strings (#10612) (5113121)

• (es/minifier) Avoid calling some costly function when optimizing deep nested binary expr (#10611) (1434571)

• (es/minifier) Remove needless JSON conversion (#10628) (4a58dca)

• (es/parser) Reduce cmp in jsx spread child (#10606) (fb33c13)

Refactor

• (es/parser) Cleanup - deduplicate some code (#10608) (5f9af96)

• (es/parser) Remove token contexts (#10547) (7ffe9d2)

[1.12.1] - 2025-06-12

Bug Fixes

• (@swc/types) Remove nativeClassProperties (#10592) (39032dc)

• (es/minifier) Fix top level detection of DCE (#10603) (964a560)

• (es/minifier) Fix inlining of arrows (#10604) (cc3bc4d)

• (es/minifier) Perform DCE on the end (#10602) (a97b149)

• (swc_common) Add Files#is_in_file (#10599) (e6b61eb)

Features

• (es/parser) Support parsing CommonJS (#10600) (70bda6a)

[1.12.0] - 2025-06-10

Bug Fixes

• (@swc/types) Add jsc.output.charset (#10567) (26b41e8)

• (es/codegen) Don't call cmt.get_leading for dummy span (#10568) (16e204d)

• (es/parser) Disallow spread operator(...) in JSX attribute values (#10587) (8deba78)

• (es/typescript) Pass native_class_properties (#10561) (7e4cd9a)

• (es/typescript) Handle export declare var in namespace (#10579) (2daa17f)

• (ts/isolated-dts) Add edges SymbolFlags::Value and SymbolFlags::Type in exports (#10577) (e6d4da2)

• Fix bindings (0f858fd)

Documentation

• (contributing) Add a script to patch local projects (#10565) (3ac0a21)

Features

• (es/minifier) Regex support for format.comments (#10571) (e441df5)

• (es/module) Add support for import.meta.main in AMD and CJS (#10596) (759de2e)

Miscellaneous Tasks

• (plugin/runner) Update virtual-fs to dedupe dependencies (#10594) (de667bb)

Refactor

• (es/lexer) Remove unnecessary result wrap (#10578) (49d15df)

• (es/parser) Extract parse_jsx_attrs (#10569) (6492786)

• (es/parser) Remove cur!(false) macro (#10583) (c96fa23)

• (swc_common) Remove Input::find (#10542) (494cef9)

• (swc_common) Use BytesStr instead of Lrc<String> (#10580) (6f00973)

• (swc_common) Use swc_sourcemap instead (#10593) (8a9f609)

Testing

• (es/parser) Enable jsx test (#10566) (72b1efe)

[1.11.31] - 2025-06-05

Bug Fixes

• (es/codegen) Improve comments handling (#10534) (d9ba838)

• (es/codegen) Exclude constructor from source map names (#10551) (ef85640)

• (es/fixer) Fix a bug with awaited arrow fn expression (#10555) (9dfdfa6)

• (es/minifier) Fix missing variable (#10478) (6de3ef6)

• (es/minifier) Inline object of member if prop is an ident (#10548) (e554381)

• (es/minifier) Add side effect check for test expr when compressing IfStmt (#10550) (3e9728e)

• (es/minifier) Fix typo in an option name (#10554) (a303941)

• (es/parser) Emit syntax errors for strict mode in non-module or scripts (#10545) (1291b4a)

• (es/react-compiler) Fix usefulness detection (#10506) (41075a1)

• (es/utils) Fix extract_var_ids (#10511) (5644372)

• (react-compiler) Fix fast check (#10538) (9403ce2)

• (swc_common) Fix build (#10544) (2ed934d)

• (swc_common) Fix skip condition for sourcemap (#10562) (cbee0df)

• (swc_common) Fix skip condition for sourcemap, really (#10563) (14feedb)

• (swc_common) Revert skip condition patch (#10564) (2a2b284)

• (ts/fast-dts) Correctly emit Symbol-keyed accessors in declarations (#10508) (1298e76)

• (ts/fast-dts) Ensure correct emission of template literals and symbol-keyed properties (#10530) (8dbdbef)

Features

• (es/regexp) Add crates for RegExp (#10525) (4b3f924)

• (swc_common) Add Globals::clone_data (#10543) (39f30b0)

• (swc_common) Add map_raw_pos to Files (#10560) (71224c3)

Miscellaneous Tasks

• (bindings) Use published versions of crates (#10513) (f65f028)

• (ecosystem-ci) Exclude ts-node (2b284e1)

Performance

• (es/minifier) Merge PropertyCollector into usage analyzer (#10514) (505bf54)

• (es/minifier) Remove needless clone (#10523) (1c02ef6)

• (es/parser) Reduce comparison while reading logical (#10526) (2bc551c)

• (es/renamer) Merge analyze/collect (#10509) (7b47f66)

• (swc_common) Remove char_indices calls (#10541) (51507bc)

Refactor

• (es/codegen) Migrate to ryu-js for numeric literal codegen (#10503) (4bc4244)

• (es/lexer) Cleanup code for reading tokens (#10533) (a72092c)

• (es/lexer) Share skip_block_comment (#10549) (b101a87)

• (es/parser) Share code for parsing strings (#10522) (931a2d6)

• (es/parser) Cleanup (#10559) (963ac9e)

• (ts/fast-dts) Derive computed flags from source code (#10510) (a2d5664)

[1.11.29] - 2025-05-21

Bug Fixes

• (@swc/types) Add transform.nativeClassProperties (#10418) (f3af44c)

• (@swc/types) Add resolveFully to BaseModuleConfig (#10426) (164cbaa)

• (ci) Remove wasmer override (425eeb9)

• (es/compat) Properly handle rest assignment in for-in/of head (#10489) (b9c0446)

• (es/jest) Hoisting vars with names starting with mock (#10410) (a29eb29)

• (es/jest) Revert #10410 (#10452) (bc756f8)

• (es/minifier) Properly handle object shorthand syntax during compression (#10467) (bae4940)

• (es/module) Handle __proto__ export name (#10420) (1b94c7a)

• (es/optimization) Support decimal numbers in jsonify (#10424) (affdec2)

• (es/react-compiler) Mark function components declared as a var interesting (#10437) (5eac076)

• (es/renamer) Fix (broken) identifier preserving API (#10474) (06c64cf)

• (ts/fast-dts) Emit readonly for Object getter prop (#10492) (6c03e20)

• (ts/fast-dts) Align object getter/setter emit behavior with TypeScript (#10502) (78c754e)

Features

• (common) Allow using build_sourcemap with multiple SourceMap (#10438) (2a07c8a)

• (common) Add ignoreList support for sourcemap (#10442) (6750459)

• (config) Allow using glob in some places (#10445) (f7a6359)

• (config) Use globset instead (#10446) (7bbaef8)

• (es/module) Add support for stripping "node:" prefix in imports and exports (#10461) (ae2ff62)

• (es/react-compiler) Initialize support crate (#10422) (1e88e6b)

• Initialize @swc/react-compiler (#10475) (883b24c)

Miscellaneous Tasks

• (es/minifier) Remove useless check (#10471) (ca85958)

Performance

• (common) Accept owned instance of sourcemap::SourceMap (#10463) (6ee439a)

• (es/minifier) Use fxhash for DCE (#10440) (c0ddd96)

• (es/minifier) Remove needless collect_decls call (#10450) (8e4b6ce)

• (es/minifier) Clear graph eagerly in DCE (#10455) (31e21d7)

• (es/minifier) Perform full analysis only once for DCE (#10454) (61baf84)

• (es/minifier) Use bitflags for var info (#10459) (36f8385)

• (es/optimization) Rely on resolver from inline_globals (#10449) (1978809)

• (es/renamer) Merge Id/Def collector (#10487) (73377f0)

• (es/utils) Make IdentUsageFinder parallel (#10444) (d074bca)

• (es/utils) Stop visiting once found in EvalFinder (#10483) (3402270)

Refactor

• (common) Remove useless &mut (#10405) (edbeb49)

• (common) Remove unused methods (#10469) (b77311a)

• (ecma/transform) Cleanup rename analyzer (#10500) (de51be1)

• (es) Remove unused code (#10460) (d344133)

• (es) Deduplicate EvalFinder (#10472) (9f104af)

• (es/minifier) Remove unused file (#10465) (7d49097)

• (es/minifier) Merge label/private name renamer (#10480) (5add84d)

• (es/parser) Split parser into also-lex/parse-only (#10399) (26289ab)

• (es/parser) Parse shebang and cleanup (#10481) (619873a)

• (es/parser) Cleanup usage of is! and bump! (#10490) (b695b68)

• (es/renamer) Inline get_unresolved (#10493) (0f5d9c1)

• (es/transforms) Unify preset_env and es_version transform (#10451) (6546c27)

Build

• (plugin) Update wasmer to v6.0.0 (#10439) (b9eff3c)

• Update rustc to nightly-2025-05-06 (#10443) (a7cbde7)

[1.11.23] - 2025-04-29

Bug Fixes

• (es/compat) Remove PURE mark from asyncto_generator (#10414) (1c6f65c)

• (es/proposal) Preserve class id for hoisted classes when transforming using declarations (#10407) (b703f21)

Refactor

• Use debug level tracing for ast related tracing (#10411) (3a0fa99)

[1.11.22] - 2025-04-23

Bug Fixes

• (es/parser) Parse export default from; with exportDefaultFrom: true option (#10373) (a270cb0)

• (es/proposal) Fix exported class for explicit-resource-management (#10393) (6b5dbc6)

• (swc_core) Fix downstream doc builds (#10401) (df511ba)

• Upgrade browserslist-rs version (#10389) (f802892)

Features

• (bindings/core) Enhance existing parse function to accept both string and buffer types(#10371) (c9a2afc)

• (css/prefixer) Fix default implementation (#10351) (34f4e41)

Miscellaneous Tasks

• (bindings/node) Add README.md (#10402) (a0e89f0)

• (es/parser) Remove useless check (#10386) (d1770ac)

• (es/utils) Mark Symbol members as literal (#10400) (3935b60)

Performance

• (common) Use next instead of nth (#10403) (12c2807)

• (es/minifier) Use bigflags to reduce context size of analyzer (#10380) (773d19c)

• (es/minifier) Use bitflags to reduce context size of InfectionCollector (#10387) (126d432)

• (es/minifier) Use bitflags to reduce compress context size (#10381) (99495bd)

• (es/parser) Move found_module_item to Parser (#10388) (fd52c5c)

Refactor

• (es/compat) Simplify async_to_generator (#10341) (e9eeba1)

• (es/lexer) Split lexer (#10377) (3ef2bd1)

Testing

• (es/transform) Add tests for source map (#10375) (0018a8e)

[1.11.21] - 2025-04-14

Bug Fixes

• (es/helpers) Sync tslib _ts_generator implementation (#10366) (d3fb992)

• (es/proposal) Fix scope of declarations for explicit-resource-management (#10362) (eb7f7e9)

• (ts/fast-strip) Increase Wasm stack size (#10359) (6d444a5)

Miscellaneous Tasks

• (es/parser) Remove useless check (#10363) (0f6a8c3)

Performance

• (es/parser) Reduce string comparison (#10355) (21789c4)

• (es/parser) Add initial capacitity for some vectors (#10361) (7b7b50e)

• (es/parser) Reduce clone of token contexts (#10364) (3ab47b2)

• (es/parser) Use bitflags to reduce parser context size (#10367) (a2d3596)

• (es/parser) Replace byte arguments with generics (#10370) (68f7667)

• (es/parser) Use arrayvec and unsafe push to optimize escaped string parsing (#10369) (e12ae1c)

[1.11.20] - 2025-04-11

Bug Fixes

• (error_reporters) Removing unused code to fix clippy check (#10338) (5970f93)

• (es/minifier) Preserve block with block scoped declaration (#10335) (a4ac3b7)

• (es/parser) Allow abstract method named accessor (#10327) (3f71776)

• (es/preset-env) Consider browserslist config if env.target is not configured (#8921) (a2dc372)

• (es/resolver) Handle using declarations (#10354) (dad815c)

• fix(es/compat): Remove one promise tick in yield* (tc39/ecma262#2819) (#10317)

Related issue:

• babel/babel#14877
• tc39/ecma262#2819 (3fb1950)

Features

• (errors) Integrate miette for enhanced diagnostic reporting (#10241) (156c3b1)

• (es/codegen) Support sourceMap.url option of terser (#10346) (566bc7c)

• (plugin/runner) Support pluginEnvVars (#10318) (795fedc)

Miscellaneous Tasks

• (es/helpers) Update peer dependency version for @swc/helpers to >=0.5.17 (#10321) (ddbf3e1)

• (ide) Disable RA diagnostics (#10324) (fcf280f)

Performance

• (es/ast) Reduce redundant string comparison for Atoms (#10323) (3ce9d81)

• (es/jsx) Cache FileName for JSX pass (#9951) (#10322) (9852940)

• (es/parser) Remove redundant is_ascii calls (#10334) (e66b4d6)

• (es/parser) Remove ascii check for no-ascii (#10350) (4279b96)

Testing

• (es) Unignore tests and update node to 20 in exec tests (#10348) (eee73ce)

[1.11.18] - 2025-04-07

Bug Fixes

• (errors) Disable wrapping of text lines (#10314) (f6840ea)

• (es/codegen) Ensure proper Unicode escape handling for ES5 and below #10028 (#10309) (7f76fa3)

• (node) Fix worker_threads issue on glibc platform (#10306) (1d1ff9e)

Features

• (es/minifier) Optimize number to int (#10294) (6dcfa70)

• (es/minifier) Remove useless to number (#10308) (898f170)

• (ts/isolated-dts) Distinguish js value and ts type (#10316) (c480604)

Refactor

• (es/codegen) Split lib.rs into multiple files (#10304) (5a07a5d)

• (es/codegen) Refactor macro to inverse order (#10297) (78f907f)

Testing

• (es/minifier) Remove duplicate test (#10305) (a80dea8)

[1.11.16] - 2025-04-01

Miscellaneous Tasks

• (deps) Update actions (#10222) (cf33196)

[1.11.15] - 2025-04-01

Bug Fixes

• (bindings/node) Fix build on platforms without plugin (#10301) (3faae55)

• (cli) Fix plugin target as wasm32-wasip1 (#10293) (7daf4f4)

• (deps) Update cargo (patch) (#10081) (e0ff00e)

• (es) Do not reuse Compiler for minify() and transform() (#10273) (63bd8a1)

• (es/analysis) Support comments (#10299) (2919d16)

• (es/bugfix) Do not rename in non-ident-function (#10274) (48b6bdb)

• (es/minifier) Remove unnecessary check when invoke IIFE (#10257) (6b75775)

• (es/parser) Parser a program as a module with TLA in non-expression statement (#10287) (157c52a)

• (html) Remove async from minifyFragmentSync (#10289) (7028457)

Documentation

• (es/types) Document outFileExtension (#10265) (99018c5)

• Add star history to README.md (b51eea9)

Features

• (es) Add Rust plugin host part for analysis API (#10285) (d213a84)

• (es) Add analysis API and refactor output API (#10288) (a53c60d)

• (es/minifier) Allow disabling char frequency analysis (#10259) (50c62d1)

• (es/minifier) Merge expression with empty return (#10283) (c276a38)

• (es/minifier) Optimize code generated by optional chaining (#10292) (0d88041)

• (es/minifier) Support reduce_escaped_newline (#10232) (64fb286)

• (ts/fast-strip) Improve error message format (#10298) (29c4afb)

• Add parallel iterators (#10075) (3b775bf)

Miscellaneous Tasks

• (html) Fix typing (3ed8a7a)

Performance

• (es/minifier) Adjust parallelism threshold (#10260) (28cc6f6)

• (es/minifier) Process cons and alt of IfStmt in parallel (#10262) (ccb6eb8)

• (es/minifier) Move logic to the pure minifier (#10264) (7ecd807)

• (es/minifier) Use swc_par_iter instead of rayon (#10267) (78e37a1)

Refactor

• Extract par-core and par-iter (#10269) (0c63bda)

• Drop swc_fast_graph (#10268) (b23c8cb)

Testing

• (es/minifier) Update the terser passing test list (#10263) (1d91571)

[1.11.13] - 2025-03-24

Features

• (es/minifier) Merge alt's cons with cons (#10256) (589bcd7)

• (swc_core) Expose features of swc_parallel (#10258) (042f19f)

Performance

• (es/minifier) Merge expr_simplifier into pure optimizer (#10202) (9c9b0ba)

[1.11.12] - 2025-03-23

Bug Fixes

• (es/minifier) Make inline_globals noop by default (#10231) (b192dc8)

• (es/minifier) Fix access to GLOBALS in char freq compute (#10239) (6286663)

• (es/parser) Fix span of wrong await tokens (#10252) (5c28dc3)

• (es/types) Fix broken types (#10224) (540bdf8)

Documentation

• (es) Improve documentation (#10247) (549e38d)

Features

• (es/fast-lexer) Enhance identifier handling with Unicode support (#10226) (482b63a)

• (es/minifier) Invoke IIFE into block (#10220) (c9a6c23)

• (es/minifier) Remove needless blocks (#10234) (0817970)

• (swc_parallel) Introduce rayon mode (#10237) (3c2213c)

• (ts/fast-strip) Add start/end span information (#10251) (ab39a62)

• (ts/fast-strip) Improve error message snippet (#10253) (f4f426c)

• (ts/fast-strip) Remove line numbers (#10254) (40e216d)

Performance

• (es/minifier) Merge dead_branch_remover into pure optimizer (#10201) (6841523)

[1.11.11] - 2025-03-17

Bug Fixes

• (es/ast) Fix Typo in API (#10210) (8eb87ba)

• (es/minifier) Do not drop numbers incorrectly (#10211) (80ccd86)

• (es/minifier) Allow TypeScript nodes to fix styled-jsx (#10221) (9d87d4d)

Features

• (es/minifier) Default to the smallest size (#10218) (800f51a)

Miscellaneous Tasks

• (es/minifier) Make test.sh faster (#10209) (f28d96e)

Refactor

• (es/minifier) Move some deps to dev deps (#10216) (1dcdbbc)

Testing

• (es/minifier) Add full tests back (#10212) (e6c04b4)

• (es/minifier) Remove full tests with too large input (#10213) (99b590f)

[1.11.10] - 2025-03-17

Bug Fixes

• (es/proposal) Fix declarations for explicit-resource-management (#10198) (99ba555)

• (es/types) Add missing types for jsc.transform.react.refresh (#10206) (e71b000)

• (typescript) Skip the body of ArrowExpr in type usage analysis (#10187) (9aca205)

Documentation

• (es/minifier) Make minifier example utilize comments (#10195) (ec3ebe7)

Features

• (es/fast-parser) Implement the initial version (#10185) (44e7c39)

Miscellaneous Tasks

• (es/minifier) Fix lints & size.sh (#10191) (e862c32)

Performance

• (es/minifier) Do not repeat applying pure minifier on last (#10196) (e6b7cee)

Refactor

• (es/minifier) Remove code for infinite loop (#10194) (fcc6884)

Testing

• (es/minifier) Update test inputs (#10193) (97d8337)

• (es/minifier) Add a benchmark for real-world inputs (#10204) (97f2180)

• (es/minifier) Disable real-world benchmarks on CI (#10205) (c5f1cbe)

• (es/minifier) Test only sizes for large inputs (#10208) (bec3e3e)

[1.11.9] - 2025-03-12

Bug Fixes

• (es/compat) Hoist arguments in object method while lowering async functions (#10167) (e764df2)

• (es/minifier) Check array inline for indexed with dynamic key (#10184) (c2fe4bf)

Features

• (es/module) Support more import.meta properties (#10179) (11727a6)

• (ts/fast-strip) Throw js object instead of map (#10186) (2da0142)

Performance

• (es/fast-lexer) Optimize read_identifier (#10170) (d97f7b2)

• (es/fast-lexer) Use memchr for skip_line_comments (#10173) (35194e3)

• (es/fast-lexer) Use SIMD properly for string literals (#10172) (be60338)

• (es/fast-lexer) Add length-based fast path for keywords (#10176) (1f70af8)

• (es/fast-lexer) Optimize memory layout of cursor (#10175) (aa20494)

• (es/fast-lexer) Remove bound checks (#10174) (bccdafc)

• (es/fast-lexer) Replace PHF with static keyword lookup table (#10181) (56d065e)

• (es/fast-lexer) Optimize SIMD vector initialization with initialing u8x16 once. (#10183) (435197c)

[1.11.8] - 2025-03-07

Bug Fixes

• (es/fast-lexer) Fix lexing of numeric literals (#10153) (65d23fe)

• (es/parser) Rescan << in new expression (#10159) (35bd6d9)

Features

• (ts/fast-strip) Throw an object instead of string (#10162) (241b881)

Performance

• (es/fast-lexer) Optimize lexing of keywords (#10155) (fb610b0)

• (es/fast-lexer) Optimize bound checks (#10157) (d74360e)

• (es/fast-lexer) Make whitespace skipper use SIMD properly (#10158) (15ea059)

• (es/lexer) Optimize whitespace scanning (#10136) (8a59753)

• (es/lexer) Optimize comment scanning (#10137) (9676c9a)

Refactor

• (es/lexer) Add fast lexer implementation (#10145) (b993f86)

• Drop unused crates (#10151) (58e4279)

• Drop unused js interop bindings (#10161) (0ceefaf)

Ci

• Add swc_plugins test to ecosystem CI (#10164) (b23d133)

[1.11.7] - 2025-03-04

Features

• (ts/fast-strip) Emit json errors (#10144) (740bd57)

[1.11.6] - 2025-03-04

Bug Fixes

• (es/minifier) Fix regression due to #10056 (#10134) (b145275)

• (es/typescript) Remove empty statements that const enum decls are folded into (#10128) (7bea830)

[1.11.5] - 2025-02-28

Bug Fixes

• (es/lints) Capture errors and emit from the original thread (#10119) (2304cd8)

• (es/minifier) Skip inlining if the referential identity of a function matters (#10123) (c08fe8d)

• (ts/fast-strip) Throw object consistently (#10122) (010ff2a)

Miscellaneous Tasks

• (deps) Update dependency base64 to v0.22.1 (#10124) (edea2c5)

Performance

• (es/resolver) Remove needless allocations (#10120) (f019d53)

[1.11.4] - 2025-02-27

Bug Fixes

• (es/decorators) Support negative numbers (#10114) (5044580)

• (es/minifier) Fix cargo feature debug (#10090) (48f68db)

• (es/minifier) Fix insufficient logging (#10091) (9ee79c9)

• (es/minifier) Inline before cost analysis (#10092) (1425b56)

• (es/minifier) Remove needless println (b1e5b2d)

• (es/resolver) Analyze variable declarations with declare (#10102) (cff6a64)

• (swc_malloc) Fix build issue due to malloc, really (#10117) (207a13f)

• (swc_malloc) Add target_env = "gnu" check (#10118) (da81e11)

• Use jemalloc on platforms that mimalloc fails to build (#10116) (fb75b98)

Miscellaneous Tasks

• (deps) Update dependency jsonc-parser to v0.26.2 (#10112) (8c5f7ef)

Performance

• (es/minifier) Improve arrow function inlining cost analysis (#10093) (e74929c)

• (es/resolver) Remove some vector allocations (#10101) (b65387a)

• Use mimalloc on linux (#10113) (3334932)

Refactor

• (es/react) Remove Lrc from parse_expr_for_jsx (#10098) (bab7704)

[1.11.1] - 2025-02-25

Bug Fixes

• (error-reporters) Store diagnostics in TransformOutput (#10027) (52caf23)

• (es/loader) Fix the absolute path check when resolving modules (#10080) (a3894ae)

• (es/minifier) Fix the order of match arms to inline correctly (#10053) (f0f842d)

• (es/types) Add transform.verbatimModuleSyntax (#10079) (a883cdc)

• (swc_common) Fix build with swc_allocator/nightly (#10067) (6a90b1f)

Documentation

• (swc_core) Add ChangeLog for swc_core (#10072) (608bc69)

Features

• (es/ast) Add explicit namespace field to distinguish namespace and module declarations (#10023) (76c2cba)

• (es/ast) Add import attributes to TsImportType (#9796) (7d297be)

• (es/minifier) Inline across side-effect-free member exprs, (#10056) (19d01d7)

• (es/minifier) Make seq inliner inline into var without init (#10077) (c4a839b)

• (es/visit) Introduce core-only visitors (#10049) (bc666be)

• (swc_allocator) Provide allocators (#10061) (d4362f7)

Miscellaneous Tasks

• (deps) Update dependency swc-plugin-coverage-instrument to ^0.0.26 (#10051) (d3fbd21)

• (swc_allocator) Remove nightly from default feature (#10058) (e78b9d1)

• (swc_allocator) Add #[inline] to allocator methods (#10066) (853eb53)

Performance

• (es/lints) Remove needless locks (#10086) (43458e9)

• (es/minifier) Prevent double boxing (#10074) (29bd286)

Refactor

• (atoms) Rename FastAtom to UnsafeAtom (#10070) (1771222)

• (atoms) Remove JsWord alias (#10071) (f33b0bc)

• (es/minifier) Remove CompileUnit to simplify (#10055) (c75578b)

[1.10.18] - 2025-02-19

Bug Fixes

• (hstr) Prevent memory leak for global stores (#10047) (4718bc0)

Miscellaneous Tasks

• (es/minifier) Make minify-all example ignore parsing errors (#10045) (6c7ec46)

Build

• (es) Select optimization level for each crates (#10046) (c28d494)

[1.10.17] - 2025-02-18

Bug Fixes

• (deps) Update cargo (patch) (#10021) (ffb7734)

• (typescript) Improve type inferring for undefined and null (#10038) (5059ece)

• (typescript) Remove the usages of private members (#10037) (8410b59)

Performance

• (hstr) Use thin arc for hash and length (#10033) (2bea793)

• (hstr) Skip interning if the text is long enough (#10035) (2622e4e)

Testing

• (hstr) Add tests (#10043) (32b58f0)

• (ts/fast-strip) Add tests for declare module error cases (#10040) (37672e0)

[1.10.16] - 2025-02-13

Bug Fixes

• (es/minifier) Check assign target before merge assign cond (#10020) (6dab49a)

• (es/parser) Preserve comment positions with leading semicolon (#10019) (c9937b6)

• (swc_common) Fix panic with non-narrow chars with width != 2 (#10011) (f9f4cac)

• (ts/fast-strip) Handle unsupported module keyword (#10022) (308f5d0)

Performance

• (es/codegen) Reduce allocation using compact_str (#10008) (7d7319f)

[1.10.15] - 2025-02-08

Bug Fixes

• (es/fixer) Wrap object tagged templates (#9991) (963c3a5)

• (es/minifier) Dont't optimize swtich case before DCE (#9994) (afe21b5)

• (es/minifier) Revert #10006 (#10007) (7e21323)

• (es/parser, es/codegen) Handle trailing empty slots in array patterns (#9992) (1a87e76)

• (es/react) Avoid adding __self in constructors of derived class in the jsx_self (#9987) (83f24af)

Features

• (es/ast) Add ShrinkToFit implementation (#10009) (6849b6a)

• (es/helpers) Update package exports for module-sync and webpack compatibility (#9995) (6f4e7ad)

• (fast-ts) Support Uint8Array Input (#9879) (61ae579)

Performance

• (es/codegen) Remove needless allocations (#9978) (9c89d57)

• (es/minifier) Do not clone from take_ident_of_pat_if_unused (#10005) (dc3b46e)

• (es/minifier) Allocate in once from mark_property_mutation (#10004) (4a90e51)

• (es/minifier) Limit infection analysis by the entry size (#10006) (1a3a4b9)

• (es/minifier) Make the default pass 2 (#10014) (07dc423)

[1.10.14] - 2025-02-03

Bug Fixes

• (deps) Update cargo (patch) (#9971) (e9843d8)

• (es/transforms) Pass unresolved_mark to simplifier instead of top_level_mark (#9989) (963b088)

• (swc_core) Fix typo in swc_core feature (#9979) (99a6339)

Features

• (ts/fast-strip) Support type-only/uninstantiated namespaces (#9983) (a72c6fa)

• Add (experimental) nodejs interop crates (#9974) (37e0ea5)

• Add (experimental) js-interop npm package (#9975) (eebb0ea)

Performance

• Update rustc-hash to v2 and drop ahash (#9982) (6765db0)

[1.10.12] - 2025-01-29

Bug Fixes

• (es/parser) Remove wrong check about const without init (#9970) (1b57261)

Performance

• (es/minifier) Make analyzer not call collect_infects_from recursively (#9924) (37616c3)

• (es/minifier) Skip complex inline operations if possible (#9972) (772cc30)

• (es/minifier) Merge binding analyzer into infection analyzer (#9973) (ca8a71f)

[1.10.11] - 2025-01-27

Bug Fixes

• (es) Restore JSON config & Adjust feature renaming (#9967) (72e5455)

• (es/minifier) Avoid paren when compressing ternary (#9920) (9d6fe37)

• (es/parser) Parse yield<T> (v: T)=>v (#9915) (04333aa)

• (ts/fast-strip) More robust generic arrow handling (#9913) (f7faa7c)

• (typescript) Allow references to the global Symbol in computed property names under isolatedDeclarations (#9869) (e4c1e03)

Features

• (es/minifier) Compress negate eq (#9911) (e8f23cf)

• (es/minifier) Compress Assign to number (#9943) (d5f40a0)

• (parallel) Add merge_in_parallel (#9939) (c5b8390)

• Merge hstr into the main repository (#9963) (bc61c13)

Miscellaneous Tasks

• (es/minifier) Add a script for samply profiler (#9923) (8f8dcaa)

• (preset-env) Update browserslist-rs (#9918) (606ffe5)

Performance

• (es/react) Use proper string types for react configuration (#9949) (1bf837e)

• (es/utils) Prevent too many recursion (#9931) (d24f785)

• (es/utils) Restrict recursion of get_type (#9933) (1781b85)

• (preset-env) Store Versions in Arc (#9950) (03dffb5)

Refactor

• (es/minifier) Make minify-all example sequential (#9912) (5b5c87e)

• (hstr) Remove needless operations (#9964) (6f781d8)

• (swc) Remove typo feature (#9965) (4b14eec)

• Apply all pending breaking changes (#9966) (1c2f7e9)

[1.10.9] - 2025-01-21

Bug Fixes

• (es/minifier) Set param type to unknown (#9905) (09b3b37)

Documentation

• (es/parallel) Improve document of Parallel (#9896) (9962c9c)

Features

• (es/minifier) Print total size from minify-all example (#9897) (134000f)

• (es/minifier) Turn 1 * v into +v (#9903) (a228347)

• (es/minifier) Compress foo ? num : 0 into num * !!foo (#9908) (ce22557)

Miscellaneous Tasks

• (es/minifier) Print slow files from minify-all example (#9899) (2d87b89)

Performance

• (es/minifier) Make character frequency analysis parallel (#9895) (ca2fd1e)

• (es/minifier) Parallelize handling of class members (#9900) (ed74839)

• (es/minifier) Adjust threshold for parallel char frequency calculation (#9901) (47ea8de)

• (es/minifier) Do heavy operation only if required (#9902) (2687231)

• (es/minifier) Cache var_or_default calls (#9909) (4a3be8d)

• (es/minifier) Invert cache to be really a cache (#9910) (8bfb0e5)

[1.10.8] - 2025-01-19

Bug Fixes

• (es/decorators) Fix init order of 2022-03 impl (#9760) (751a310)

• (es/testing) Fix sourcemap generation (#9891) (008f2de)

• (es/ts_strip) Handle ASI hazard in return statement (#9882) (121b5fe)

• (typescript) Collect usages in extend clauses of classes and interfaces (#9893) (ef29ef6)

Features

• (typescript) Check computed property names of ts signatures (#9867) (caed78a)

Performance

• (bench) Run benchmark on a custom runner (#9877) (2d6f9a5)

• (es/codegen) Remove needless allocations (#9890) (f230ff2)

• (es/minifier) Make the first run of DCE more efficient (#9868) (7329824)

• (es/minifier) Adjust parallel threshold (#9872) (d5d856c)

• (es/minifier) Box VarUsageInfo of ProgramData (#9894) (fafd754)

• (es/renamer) Use IndexSet for rename queue (#9866) (f404720)

• (es/utils) Optimize maybe_par_idx_raw (#9870) (46e3d77)

• Enable concurrent in codspeed bench (#9862) (6c2bb13)

Refactor

• (atoms) Rename FastAtom to UnsafeAtom (#9873) (3df8b44)

• (es/minifier) Add a way to profile minifier for real-world inputs (#9881) (9657294)

• (es/minifier) Use chili for minify-all example (#9885) (197f0bc)

• (es/minifier) Make minify-all profilable (#9888) (fbad136)

[1.10.7] - 2025-01-10

Bug Fixes

• (ci/publish) Do not tag stable if onlyNightly is on (#9863) (c0c6056)

• (es/minifier) Improve DCE (#9853) (85fb16c)

• (es/parser) Fix context of dynamic import type (#9852) (caa7f37)

Documentation

• Update the link to the team (0fcdc31)

Features

• (ts/fast-strip) Distinguish invalid vs unsupported (#9846) (5709bc2)

Testing

• (parallel) Add test to debug segfault on windows x64 (#9857) (ae53a35)

Build

• Update wasmer to v5.0.5-rc1 (#9860) (615ae93)

[1.10.6] - 2025-01-07

Performance

• (es/minifier) Speed up merge_sequences_in_exprs by caching computation (#9843) (6e5632f)

[1.10.5] - 2025-01-07

Bug Fixes

• (es/minifier) Fix minification of framer-motion by checking cons.termniates() (#9818) (512c91f)

• (typescript) Fix wrong check for super class (#9822) (2307a4d)

Documentation

• (swc_parallel) Document safety (#9847) (d381e2f)

Features

• (swc_parallel) Implement basic APIs (#9840) (84a6702)

Miscellaneous Tasks

• (deps) Update cargo (patch) (#9819) (e7a9d88)

• (deps) Update dependency magic-string to v0.30.17 (#9794) (51595ae)

• (deps) Update rust crate phf to v0.11.3 (#9848) (66bf0e5)

Performance

• (atoms) Update hstr to optimize == of Atom (#9845) (584a0a0)

• (es/lints) Configure a benchmark for ES lints (#9833) (734ec21)

• (es/lints) Make ES lints faster (#9837) (d56a473)

• (es/lints) Make lint rules parallel (#9842) (e080172)

• (es/minifier) Improve parallelism and cache friendliness (#9813) (f8dff56)

• (es/minifier) Introduce FastJsWord and FastId in swc_atoms (#9826) (ef0ec38)

• (es/minifier) Update hstr to v0.2.14 (#9828) (bc4ec00)

• (es/minifier) Replace rayon with chili (#9829) (858e92a)

Refactor

• (es/lints) Cleanup & prepare using chili (#9838) (d47844b)

Build

• (swc_parallel) Fix build on CI (#9844) (a2b7105)

[1.10.4] - 2024-12-30

Bug Fixes

• (deps) Update cargo (patch) (#9733) (fb2f6e4)

• Remove Caused by: 'failed to parse' from TS blank space (#9820) (aaeb0ab)

[1.10.3] - 2024-12-27

Bug Fixes

• (es/codegen) Emit semicolon after using declarations (#9816) (556d924)

[1.10.2] - 2024-12-26

Bug Fixes

• (es) Don't panic when wasm bytecheck faild (#9803) (c81be2e)

• (es/parser) Do not parse empty stmt after using decl (#9798) (c2696db)

Documentation

• (types) Fix broken links (#9812) (7768114)

[1.10.1] - 2024-12-09

Bug Fixes

• (es/resolver) Fix wrong syntax context of vars with the same names as catch params (#9786) (5a44c6b)

Features

• (es/transforms) Add module.outFileExtension (#9784) (e04c7b3)

[1.10.0] - 2024-12-04

Bug Fixes

• (es/codegen) Use raw value for emitting JSX text (#9762) (b83c44f)

• (es/compat) Fix marker for inlined helpers (#9776) (f54ec2c)

• (es/minifier) Drop console in optional chainings (#9759) (39271ad)

• (es/minifier) Do not inline into the exact LHS (#9777) (985977b)

Features

• (es/minifier) Support preserve_annotations of terser (#9775) (6e1c9fd)

• (typescript) Align isolatedDeclaration implementation with tsc (#9715) (0adad25)

• Apply Wasm-breaking changes (#9771) (ed65eee)

Miscellaneous Tasks

• (deps) Update dependency magic-string to v0.30.13 (#9747) (fa80a1e)

• (deps) Update dependency magic-string to v0.30.14 (#9764) (6e46a8b)

Refactor

• (estree/compat) Do not use nightly features (#9772) (0f12bbd)

[1.9.3] - 2024-11-22

Bug Fixes

• (@swc/types) Tsc build file ignored by npm (#9754) (14a5c1e)

• (es) Source map super(...args) calls in injected constructors (#9745) (35b0ca0)

• (es/plugin) Migrate swc plugin new to use .cargo/config.toml (#9740) (4ffb21e)

• (es/resolver) Ignore VarDecl with declare: true (#9734) (aa0f784)

Documentation

• (types) Document Assumptions API (#9746) (cd4321c)

Features

• (plugin) Bump rkyv to v0.8.8 (#9730) (81ac77e)

• (plugin) Update wasmer to v5 (#9731) (9b74ccd)

• (visit) Derive serde for AstParentKind (#9744) (e0fdd68)

Miscellaneous Tasks

• (bindings/node) Format binding.js (#9738) (9f8c14f)

• (deps) Update cargo (patch) (#9724) (da37439)

Performance

• (es/plugin) Make analyze_source_file lazy, again (#9732) (c1d12d6)

Refactor

• (es/compat) Use special span instead of passing static_blocks_mark (#9725) (6ad0735)

• Delay Wasm-plugin breaking changes (#9735) (92faf5b)

[1.9.2] - 2024-11-11

Bug Fixes

• (es) Fix typo in feature name (#9721) (aff9de5)

Features

• (es/codegen) Implement proper inline_script support (#9729) (e732a36)

[1.9.1] - 2024-11-06

Bug Fixes

• (es/codegen) Fix ends_with_alpha_num (#9720) (569c799)

[1.9.0] - 2024-11-06

Bug Fixes

• (es/minifier) Avoid generating reserved mangling names (#9710) (b49317a)

• (es/plugin) Revert #9696 (#9717) (772f023)

Features

• (typescript) Port deno isolatedDeclarations updates (#9712) (6194044)

Miscellaneous Tasks

• (deps) Update rust crate is-macro to v0.3.7 (#9713) (d48e6e8)

[1.8.0] - 2024-11-04

Bug Fixes

• (es/typescript) Handle multiline type parameters in async arrow functions (#9704) (c5ed19c)

• (es/typescript) Handle ASI hazards in fast type strip (#9707) (c135f71)

Features

• (es) Add es2023 and es2024 to EsVersion (#9700) (5a6f0e6)

• (es/plugin) Introduce manual-tokio-runtmie to swc crate (#9701) (97298c4)

Performance

• (common) Make character analysis lazy (#9696) (1c3eaf6)

• (es/renamer) Modify parallel renaming threshold (#9706) (91a9106)

[1.7.42] - 2024-10-31

Bug Fixes

• (es/generator) Fix code generation for break in nested while (#9684) (65872af)

• (es/parser) Parse await using() call (#9693) (bcf05de)

• (es/resolver) Skip resolving lowercase JSXIdentifiers (#9686) (6ed1715)

• (es/types) Add jsc.experimental.keepImportAssertions to types (#9691) (4b4dcfa)

Features

• (es/minifier) Optimize switch with side effect and termination tests (#9677) (7344a63)

• (es/parser) Ability to get script's potential module errors (#9682) (2bbd1e8)

Miscellaneous Tasks

• (deps) Update cargo (patch) (#9607) (3597b0f)

Performance

• (es) Cache current_dir() system calls (#9683) (7aab945)

• (es/lints) Disable lints by default (#9689) (4d887d0)

• (visit) Introduce Pass API and adjust visitor APIs for it (#9680) (581aafb)

[1.7.40] - 2024-10-26

Bug Fixes

• (bindings) Update napi to handle string with \0 (#9665) (8f45eaf)

• (bindings/node) Add VisitTsPropertySignature (#9670) (715c42c)

• (es/codegen) Improve EndsWithAlphaNum (#9675) (ba2a942)

• (es/renamer) Check preserved in normal renaming mode (#9666) (87b4e10)

• (typescript) Check whether the method is abstract when checking is_overload (#9678) (78500af)

Documentation

• (contributing) Document changeset (#9667) (602c667)

Miscellaneous Tasks

• (deps) Update dependency swc-plugin-coverage-instrument to ^0.0.25 (#9676) (b8d255b)

[1.7.39] - 2024-10-22

Bug Fixes

• (es/compat) Add missing visit children for destructuring (#9658) (32116a0)

• (es/parser) Correct > and < when exit type context (#9653) (abffc07)

• (es/proposal) Use tsc version of explicit resource management (#9585) (f735108)

• (wasm-typescript) Fix option types of functions (#9662) (4cbe33c)

Features

• (es/minifier) Implement optional catch binding (#9657) (f70b842)

Miscellaneous Tasks

• (es/typescript) Improve enum comments and sourcemap (#9652) (31fe3b6)

[1.7.36] - 2024-10-15

Bug Fixes

• (es) Run esnext transforms on esnext target (#9644) (8a19201)

• (es/minifier) Check type of assignment target before merging assignments (#9617) (4436621)

Features

• (es) Introduce runPluginFirst for Wasm plugins (#9645) (3d3e434)

• (es/minifier) Support unary negate in cast_to_number (#9642) (88a2186)

Miscellaneous Tasks

• (deps) Update dependency magic-string to v0.30.12 (#9634) (085bc19)