@swc/wasm - npm Package Versions

[1.13.2] - 2025-07-22

Bug Fixes

• (es/minifier) Remove the last break in the second switch (#10923) (3ed4a12)

• (es/parser) Reject malformed phase import statements (#10912) (5fde348)

• (swc_core) Add default-features = false to drop stacker (#10916) (38b45b7)

Features

• (es/compiler) Improve structure (#10903) (0cc6743)

• (es/compiler) Merge private_in_object and static_blocks (#10909) (c1405da)

• (es/compiler) Merge logical assignments (#10914) (ccbfcd1)

• (es/compiler) Merge export_namespace_from (#10917) (ba6cc71)

• (es/renamer) Add renamer_keep_contexts (#10907) (1b15171)

Miscellaneous Tasks

• (claude) Use Opus and allow assigning to the claude-bot (3275b9c)

Performance

• (es/lexer) Remove option for handler (#10881) (1ad8506)

• (es/lexer) Reduce memory move (#10906) (145fba4)

• (es/lexer) Reduce context query (#10910) (443aa1c)

• (es/lexer) Reduce query and comparison (#10919) (400c996)

• (es/minifier) Make get_type for === lazy (#10920) (4eab8e8)

• (es/minifier) Reduce get_type calls (#10922) (9d55e88)

• (es/parser) Reduce check during parsing binding (#10905) (92ca5ec)

• (es/parser) Reduce comparison (#10911) (e00c178)

Refactor

• (es/compat) Initialize compiler API (#10902) (d6566ee)

• (es/lexer) EOF Token (#10880) (54c866a)

• (es/parser) Reduce input_mut() calls (#10899) (1816368)

• (es/parser) Remove unnecessary PResult (#10900) (27e548d)

• (es/preset-env) Apply swc_ecma_compiler in preset env (#10921) (6f5b72a)

Testing

• (es/minifier) Update #10918 test case (#10924) (57fb106)

[1.13.1] - 2025-07-19

Bug Fixes

• (es/compat) Properly handle rest assignment in for-in/of RHS (#10883) (5d11851)

• (es/decorators) Handle empty class members (#10892) (fe44972)

• (es/minifier) Hoist props when only props are used (#10891) (452fc98)

• (es/minifier) Recursively check stmt for variable when inlining function (#10896) (e37a93d)

• (es/minifier) Termination check when stmts containing switch (#10898) (4429b20)

• (es/parser) Fix parsing of JSX identifiers (#10894) (0047c39)

• (ts/fast-strip) Strip private method overloads (#10886) (cdb6e87)

Testing

• (es/minify) Verify fixed issue (#10888) (86c1dca)

[1.13.0] - 2025-07-17

Bug Fixes

• (es/lexer) Disallow legacy octal literals as BigInt (#10867) (430fbf4)

• (es/minifier) Restrict IIFE inlining in class contexts (#10879) (a01b54a)

• (es/parser) Mark static as reserved in strict mode (#10861) (5bdddd7)

Features

• (es/minifier) Drop unused rest paramters (#10857) (5305486)

• (es/minifier) Enhance IIFE invoker for arrow functions (#10860) (2b1ce3d)

• (plugin/runner) Use wasmer-wasix sys-minimal feature to reduce binary size (#10638) (b5f704a)

Performance

• (es/lexer) Reduce comparison while reading numbers (#10864) (c6ba5c2)

• (es/lexer) Remove unnecessary check when reading keywords (#10866) (4aefe0e)

• (es/parser) Reduce comparisons (#10862) (3bd9aad)

• (es/parser) Remove useless alloc (#10865) (3ebf088)

• (es/parser) Reduce token query (#10869) (d93ef64)

• (es/parser) Remove duplicate check (#10872) (fe76460)

• (es/parser) Remove duplicate check (#10874) (064123b)

• (swc_error_reporters) Avoid creating miette handler when no diagnostics (#10852) (93b318f)

Refactor

• (es/lexer) Avoid passing convert (#10868) (77393f8)

• (es/minifier) Cleanup (#10882) (2595cb1)

• (es/parser) Remove duplicate check for reservedness (#10850) (4897bfd)

• (es/parser) Remove span swap operation in parser (#10854) (32f4bb8)

[1.12.14] - 2025-07-14

Bug Fixes

• (es/minifier) Don't inline arrow when it contain this (#10825) (8b43bb3)

• (es/parser) Make export in NS to not affect file type (#10799) (ae22033)

• (es/parser) Correctly check ambient context (#10802) (f97ea03)

Features

• (es/parser) Enable support for dynamic import with defer phase (#10845) (097d29d)

• (plugin) Remove bytecheck to make Wasm plugins backward compatible (#10842) (30ad808)

Miscellaneous Tasks

• (bindings) Fix dependency issues (7c57fbb)

• (deps) Update class-validator to avoid comments (#10819) (bacfa4b)

• (ide) Enable --workspace for rust-analyzer check (#10809) (92647ff)

Performance

• (es/minifier) Use u8 for remaining_depth (#10833) (ed6956a)

• (hstr) Inline one more byte (#10817) (3886c97)

• (hstr) Remove static tag (#10832) (66ae1e8)

Refactor

• (es/helpers) Make inline helpers optional at compile time (#10808) (53f3881)

• (es/lexer) Don't store buffer in lexer (#10830) (cac40f1)

• (es/lints) Remove warnings without features (#10794) (41d507f)

• (es/parser) Reduce token query (#10834) (5cd5185)

• (es/parser) Reduce call to parse_decorators (#10846) (356d3a0)

• (es/parser) Remove duplicate check (#10847) (2b04efd)

• (es/preset-env) Use strpool,phf for corejs2 data (#10803) (1652fd8)

• (es/react) Remove redundant replace calls (#10795) (a670b37)

• (es/react) Remove count_children (#10818) (2116ab2)

• (hstr) Cleanup duplicate header (#10812) (630dde9)

• (hstr) Make the deallocation of Atoms explicit (#10813) (406433d)

• (hstr) Remove is_global (#10820) (afda0f9)

Testing

• (es/plugin) Test memory layout of archived types (#10841) (502e991)

[1.12.11] - 2025-07-08

Bug Fixes

• (ci) Fix CI (#10790) (b3f9760)

• (es) Use default-features = false for swc crate usages (#10776) (50b2eac)

• (es) Make swc_typescript optional (#10792) (c32569d)

• (preset-env) Fix default value for caniuse (#10754) (aa4cd5b)

• (preset-env) Revert default value (#10778) (7af5824)

Features

• (es/minifeir) Inline lazily initialized literals (#10752) (fd5d2e2)

• (es/minifier) Evaluate Number.XXX constants (#10756) (c47dab5)

• (es/minifier) Implement partial evaluation of array join (#10758) (bdf3a98)

• (swc_core) Expose swc_ecma_parser/unstable (#10744) (db0679e)

Miscellaneous Tasks

• (common) Remove clone() in proc macro (#10762) (12e3180)

• (deps) Update browserslist-rs to 0.19 (#10750) (f8bf21c)

• (deps) Remove unused deps with cargo-shear (#10765) (f4e4974)

• (es/module) Drop node feature of swc_ecma_loader (#10761) (44471b5)

• (plugin/runner) Remove unused feature and dependency (#10764) (a7d8a0a)

Performance

• (es/lexer) Use bitflags for Syntax (#10676) (bf8c722)

• (es/lexer) Do not scan number if there's no underscore (#10788) (f5d92ee)

• (es/lints) Make rules not parallel (#10772) (4e6001c)

• (es/lints) Merge critical rules (#10773) (816e75a)

• (es/parser) Reduce the number of context set ops (#10742) (08b4e8b)

• (es/parser) Reduce value set operations for context (#10751) (4976b12)

• (es/parser) Reduce query ops of current token (#10766) (4304f91)

• (es/parser) Remove useless call in parse_ident (#10770) (4ca12c9)

• (es/renamer) Reduce time complexity in case of conflict (#10749) (0279914)

• (hstr) Do not compare string during creating atoms (#10791) (43a4f11)

• Replace rayon with par-iter (#10774) (a6e6ebe)

Refactor

• (es) Make swc_ecma_lint optional for swc crate (#10767) (f80415b)

• (es/lexer) Use const fn in SyntaxFlags (#10737) (b9eb23a)

• (es/parser) Cleanup parse_setter_param (#10745) (70734f4)

• (es/parser) Cleanup typed-arena (#10769) (ce5138d)

• (es/parser) Cleanup for ctx (#10777) (d60a611)

• (es/parser) Delete with_ctx (#10779) (ce057c5)

• (es/parser) Cleanup (#10781) (176ce36)

• (es/preset) Remove deprecated preset_env function and feature module (#10759) (fa0e0ab)

• (es/preset-env) Use phf for corejs3 entry (#10712) (658b26d)

Testing

• (es/minifier) Update the terser test list (#10748) (1eace01)

• (es/minifier) Update the passing test list (#10782) (8aa888b)

• (es/parser) Add a test for duplicate labels (#10784) (28fc643)

Pref

• (hstr) Do not compare static tag (#10771) (5d3ce83)