v2.0.0-nightly-20250827162746

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v1.6.8

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What's Changed

Bug Fixes 🐞

• fix: reexports in arrow-only environments without const by@​chenjiahan in#​12484
• fix: re-validate HttpUriPlugin redirects against allowedUris and enforce http(s) and max redirects by@​JSerFeng in#​12463

Full Changelog:web-infra-dev/rspack@v1.6.7...v1.6.8

v1.6.7

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Highlights 💡

🎉 Support forimport.meta.filename,import.meta.dirname, andimport.meta.resolve

Rspack now supports theimport.meta.filename,import.meta.dirname, andimport.meta.resolve meta properties in ESM modules.
These properties provide a standardized way to access file and directory paths in ES modules, similar to the CommonJS__filename and__dirname variables:

// Get the absolute path of the current module fileconsole.log(import.meta.filename);// e.g., "/path/to/project/src/index.js"// Get the directory path of the current moduleconsole.log(import.meta.dirname);// e.g., "/path/to/project/src"// Resolve a module specifier to an absolute URLconstresolvedPath=import.meta.resolve('./utils.js');

Thanks to@​magic-akari for this contribution!

What's Changed

New Features 🎉

• feat: update resolver error messages to use colored output by@​chenjiahan in#​12348
• feat: Supportimport.meta.filename/dirname/resolve by@​magic-akari in#​12317
• feat: support[relative-resource-path] in moduleFilenameTemplate by@​SyMind in#​12370

Bug Fixes 🐞

• fix(diagnostic): dim gutter and loader info for better visual hierarchy by@​chenjiahan in#​12341
• fix: avoid conflict for inlined const identifier by@​ahabhgk in#​12347
• fix(rstest): dedicated to hoist@​rstest/core declaration by@​fi3ework in#​12302
• fix: don't use sync fs api by@​stormslowly in#​12353
• fix: should use sourceOrder to sort module outgoing in buildChunkGraph by@​JSerFeng in#​12351
• fix(rstest): always hoist@​rstest/core init fragment by@​fi3ework in#​12363
• fix: extracted comments should be behind the shebang by@​CPunisher in#​12380
• fix: persistent cache save lazy barrel affected modules by@​jerrykingxyz in#​12384
• fix: prevent URLPlugin from parsing new URL(import.meta.url) by@​LingyuCoder in#​12386
• fix: typo in preload runtime of CssExtractPlugin by@​JSerFeng in#​12387

Refactor 🔨

• refactor: rename module arguments to rspack specific by@​LingyuCoder in#​12350
• refactor: cache test case support NEXT_MOVE_DIR_START by@​jerrykingxyz in#​12359
• refactor: side effect optimize artifacts to deref option by@​stormslowly in#​12334
• refactor: render runtime module identifier by runtime template by@​LingyuCoder in#​12360
• refactor: recalculate all chunk ids with cache by@​JSerFeng in#​12374
• refactor: render javascript runtime globals according to compiler options by@​LingyuCoder in#​12371
• refactor: optimize runtime multiple line string literal by@​LingyuCoder in#​12381
• refactor: support.rspack[...] syntax and rebrand CSS extract plugin internals by@​LingyuCoder in#​12385

Other Changes

• chore(workflow): run diff CI on push events by@​yifancong in#​12346
• chore: release v1.6.6 by@​LingyuCoder in#​12345
• chore: fix taplo format script by@​stormslowly in#​12349
• ci: remove legacy ecosystem CI yaml by@​fi3ework in#​12352
• chore(deps): update dependency@​shikijs/transformers to ^3.18.0 by@​renovate[bot] in#​12357
• chore(deps): update patch npm dependencies by@​renovate[bot] in#​12355
• chore(deps): bump Rslib v0.18.3 by@​Timeless0911 in#​12362
• chore(deps): update dependency prebundle to ^1.6.0 by@​renovate[bot] in#​12327
• chore(deps): update pnpm to v10.24.0 by@​renovate[bot] in#​12328
• chore(deps): update dependency@​playwright/test to v1.57.0 by@​renovate[bot] in#​12356
• chore(deps): pin action dependencies by@​renovate[bot] in#​12354
• chore(deps): update dependency react to ^19.2.1 by@​renovate[bot] in#​12364
• chore: add napi::tokio_runtime::block_on by@​stormslowly in#​12358
• chore(ci): move rust-cache Action to rspack-contrib by@​stormslowly in#​12368
• test: split Config, Watch and NativeWatcher tests into 3 parts for better parallelization by@​LingyuCoder in#​12379
• test: bump Rstest to v0.7.1 by@​9aoy in#​12390

Full Changelog:web-infra-dev/rspack@v1.6.6...v1.6.7

v1.15.7

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Bug Fixes

• (es/minifier) Prevent unsafe sequence merging insuper() calls (#​11381) (eb02780)

• (es/transformer) Fix variable declaration for nullish coalescing in else-if branches (#​11384) (6746002)

• (es/transforms) Update_ts_rewrite_relative_import_extension helper code (#​11382) (1ec444e)

Features

• (es/transformer) Mergeprivate_properties_in_object (#​11378) (769c9d2)

Performance

• (es/minifier) Optimize data structures ofProgramData (#​11374) (3639523)

Refactor

• (es/transformer) Port var injector (#​11383) (cfff553)

v1.15.6

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v1.15.5

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Bug Fixes

• (es/parser) Fixbump length (#​11372) (ec5c1bc)

• (es/transforms) Adjust import rewriter pass before inject helpers pass (#​11371) (8516991)

v1.15.4

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Bug Fixes

• (es/compat) Preserve return value for single-property object destructuring (#​11334) (847ad22)

• (es/compat) Fix generator transform for compound assignments, for-in, and labeled break (#​11339) (9b6bedd)

• (es/compat) Destructuring evaluation order (#​11337) (49d04c7)

• (es/compat) Fix parameter default value evaluation order with object rest (#​11352) (2ebb261)

• (es/fixer) Preserve parens around IFFE in binary expressions within sequences (#​11324) (a4c84ea)

• (es/helpers) Avoid extra trap calls on excluded keys in object rest spread (#​11338) (4662caf)

• (es/minifier) Fixdebug cargo feature (#​11325) (be86fad)

• (es/minifier) Fix optimization pass formerge_imports (#​11331) (ca2f7ed)

• (es/parser) Don't callbump_bytes in thecontinue_if ofbyte_search! (#​11328) (583619d)

• (es/parser) Support type-only string literal in import specifiers (#​11333) (07762f1)

• (es/parser) Handle TypeScript expressions in destructuring patterns (#​11353) (160ec34)

• (es/transformer) Completereplace_this_in_expr implementation (#​11361) (58c4067)

• (es/transformer) Fix pass order (#​11370) (373048a)

Features

• (es/minifier) Optimizetypeof x == "undefined" totypeof x > "u" (#​11367) (a5e144b)

• (es/parser) Supportno_paren parser option (#​11359) (5b9d77c)

• (es/parser) Revertno_paren parser option (#​11362) (57a8731)

• (es/transfomer) Add modules to prepare porting (#​11347) (68d740c)

• (es/transform) Add common fields (#​11346) (1a8759f)

• (es/transformer) Mergeasync-to-generator (#​11355) (c388e87)

• (es/transformer) Mergeasync_to_generator (#​11358) (25f3a47)

• (es/transformer) Mergeobject_rest_spread (#​11357) (752188e)

• (es/transformer) Mergenullish_coalescing (#​11365) (5fb686a)

• (es/transformer) Mergelogical_assignment_operators (#​11369) (94946fa)

Performance

• (es/compat) Mergeexponentation_operator (#​11310) (0ef3637)

• (es/compat) Mergeoptional_catch_binding (#​11313) (468d20c)

• (es/compat) Use merged transformer (#​11366) (c4a5e79)

• (es/parser) Optimizebyte_search! (#​11323) (67f67c1)

• (es/parser) Small optimization after byte-based lexer (#​11340) (c92ea4e)

• (es/parser) Useslice rather than matching keywords (#​11341) (b6ad2cb)

• (parser) Make all parsers work by byte instead of char (#​11318) (725efd1)

v7.4.3

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No significant changes

    View changes on GitHub

v7.4.2

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No significant changes

    View changes on GitHub

v0.5.15

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   🐞 Bug Fixes

• rolldown: Defaultchecks.pluginTimings to false  -  by@​sxzz(77a49)

    View changes on GitHub

v0.5.14

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   🐞 Bug Fixes

• Support object input for rollup/rolldown  -  by@​sxzz(87839)

    View changes on GitHub

v7.0.0-dev.20251220.1

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v7.0.0-dev.20251219.1

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v7.0.0-dev.20251218.3

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v7.0.0-dev.20251218.1

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v7.0.0-dev.20251217.1

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v7.0.0-dev.20251216.1

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v7.0.0-dev.20251215.1

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v7.0.0-dev.20251214.1

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v7.0.0-dev.20251213.1

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v7.0.0-dev.20251212.1

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v7.0.0-dev.20251211.1

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v7.0.0-dev.20251210.1

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v7.0.0-dev.20251209.1

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v7.0.0-dev.20251208.1

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v7.0.0-dev.20251207.1

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v7.0.0-dev.20251206.1

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v7.0.0-dev.20251205.1

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v7.0.0-dev.20251204.1

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v6.0.3

Features

• add Vite 8 support (2080d41)

Bug Fixes

• deps: update all non-major dependencies (#​707) (799f419)
• hmr: reload when components switch between vapor and vdom (#​714) (6c45fe5)

Performance Improvements

• replace debug with obug (#​705) (684ac30)

Miscellaneous Chores

• deps: update upstream (#​706) (d910114)
• upgrade deps, setup tsgo (037e540)

v4.0.16

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   🐞 Bug Fixes

• Fix browser mode default testTimeout back to 15 seconds  -  by@​hi-ogawa in#​9167(da0ad)
• Avoid crashing onprocess.versions stub  -  by@​AriPerkkio in#​9174(78cfb)
• Reject calling suite function inside test  -  by@​hi-ogawa in#​9198(1a259)
• Allow inlining fully dynamic import  -  by@​hi-ogawa in#​9137(56851)
• Fix module graph UI on html reporter with headless browser mode  -  by@​hi-ogawa in#​9219(60642)
• Log deprecatedtest.poolOptions if it's set  -  by@​sheremet-va in#​9226(f7f6a)
• browser:
  • ImportrecordArtifact from the vitest package  -  by@​macarie in#​9186(01c56)
  • Fiximport.meta.env define  -  by@​hi-ogawa in#​9205(01a9a)
  • String formatting bug when including placeholders in console.log  -  by@​michael-debs and@​hi-ogawa in#​9030 and#​9131(84a30)
• coverage:
  • Istanbul untested files source maps are off  -  by@​AriPerkkio in#​9208(372e8)
• experimental:
  • ExportsetupEnvironment for custom pools  -  by@​AriPerkkio in#​9187(5d26b)

    View changes on GitHub

v3.5.26

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Bug Fixes

• compat: fix compat handler of draggable (#​12445) (ed85953), closes#​12444
• compat: handle v-model deprecation warning with missing appContext (#​14203) (945a543), closes#​14202
• compiler-sfc: demote const reactive bindings used in v-model (#​14214) (e24ff7d), closes#​11265#​11275
• compiler-ssr: handle ssr attr fallthrough when preserve whitespace (#​12304) (4783118), closes#​8072
• hmr: handle cached text node update (#​14134) (69ce3c7), closes#​14127
• keep-alive: use resolved component name for async components in cache pruning (#​14212) (dfe667c), closes#​14210
• runtime-core: ensure correct anchor el for deeper unresolved async components (#​14182) (f5b3bf2), closes#​14173
• runtime-core: handle patch stable fragment edge case (#​12411) (94aeb64), closes#​12410
• runtime-core: pass component instance to flushPreFlushCbs on unmount (#​14221) (e857e12), closes#​14215

Performance Improvements

• compiler-core: use binary-search to get line and column (#​14222) (1904053)

v0.27.2

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• Allow import path specifiers starting with#/ (#​4361)

  Previously the specification forpackage.json disallowed import path specifiers starting with#/, but this restrictionhas recently been relaxed and support for it is being added across the JavaScript ecosystem. One use case is using it for a wildcard pattern such as mapping#/* to./src/* (previously you had to use another character such as#_* instead, which was more confusing). There is some more context innodejs/node#49182.

  This change was contributed by@​hybrist.

• Automatically add the-webkit-mask prefix (#​4357,#​4358)

  This release automatically adds the-webkit- vendor prefix for themask CSS shorthand property:

  /* Original code */main {mask:url(x.png) center/5rem no-repeat}/* Old output (with --target=chrome110) */main {mask:url(x.png) center/5rem no-repeat;}/* New output (with --target=chrome110) */main {-webkit-mask:url(x.png) center/5rem no-repeat;mask:url(x.png) center/5rem no-repeat;}

  This change was contributed by@​BPJEnnova.

• Additional minification ofswitch statements (#​4176,#​4359)

  This release contains additional minification patterns for reducingswitch statements. Here is an example:

  // Original codeswitch(x){case0:foo()breakcase1:default:bar()}// Old output (with --minify)switch(x){case0:foo();break;case1:default:bar()}// New output (with --minify)x===0?foo():bar();

• Forbidusing declarations insideswitch clauses (#​4323)

  This is a rare change to remove something that was previously possible. TheExplicit Resource Management proposal introducedusing declarations. These were previously allowed insidecase anddefault clauses inswitch statements. This had well-defined semantics and was already widely implemented (by V8, SpiderMonkey, TypeScript, esbuild, and others). However, it was considered to be too confusing because of how scope works in switch statements, so it has been removed from the specification. This edge case will now be a syntax error. Seetc39/proposal-explicit-resource-management#215 andrbuckton/ecma262#14 for details.

  Here is an example of code that is no longer allowed:

  switch(mode){case'read':usingreadLock=db.read()returnreadAll(readLock)case'write':usingwriteLock=db.write()returnwriteAll(writeLock)}

  That code will now have to be modified to look like this instead (note the additional{ and} block statements around each case body):

  switch(mode){case'read':{usingreadLock=db.read()returnreadAll(readLock)}case'write':{usingwriteLock=db.write()returnwriteAll(writeLock)}}

  This is not being released in one of esbuild's breaking change releases since this feature hasn't been finalized yet, and esbuild always tracks the current state of the specification (so esbuild's previous behavior was arguably incorrect).

v0.27.1

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• Fix bundler bug withvar nested insideif (#​4348)

  This release fixes a bug with the bundler that happens when importing an ES module usingrequire (which causes it to be wrapped) and there's a top-levelvar inside anif statement without being wrapped in a{ ... } block (and a few other conditions). The bundling transform needed to hoist thesevar declarations outside of the lazy ES module wrapper for correctness. See the issue for details.

• Fix minifier bug withfor insidetry inside label (#​4351)

  This fixes an old regression fromversion v0.21.4. Some code was introduced to move the label inside thetry statement to address a problem with transforming labeledfor await loops to avoid theawait (the transformation involves converting thefor await loop into afor loop and wrapping it in atry statement). However, it introduces problems for cross-compiled JVM code that uses all three of these features heavily. This release restricts this transform to only apply tofor loops that esbuild itself generates internally as part of thefor await transform. Here is an example of some affected code:

  // Original coded:{  e:{try{while(1){break d}}catch{break e;}}}// Old output (with --minify)a:try{e:for(;;)break a}catch{break e}// New output (with --minify)a:e:try{for(;;)break a}catch{break e}

• Inline IIFEs containing a single expression (#​4354)

  Previously inlining of IIFEs (immediately-invoked function expressions) only worked if the body contained a singlereturn statement. Now it should also work if the body contains a single expression statement instead:

  // Original codeconstfoo=()=>{constcb=()=>{console.log(x())}returncb()}// Old output (with --minify)constfoo=()=>(()=>{console.log(x())})();// New output (with --minify)constfoo=()=>{console.log(x())};

• The minifier now strips emptyfinally clauses (#​4353)

  This improvement means thatfinally clauses containing dead code can potentially cause the associatedtry statement to be removed from the output entirely in minified builds:

  // Original codefunctionfoo(callback){if(DEBUG)stack.push(callback.name);try{callback();}finally{if(DEBUG)stack.pop();}}// Old output (with --minify --define:DEBUG=false)functionfoo(a){try{a()}finally{}}// New output (with --minify --define:DEBUG=false)functionfoo(a){a()}

• Allow tree-shaking of theSymbol constructor

  With this release, callingSymbol is now considered to be side-effect free when the argument is known to be a primitive value. This means esbuild can now tree-shake module-level symbol variables:

  // Original codeconsta=Symbol('foo')constb=Symbol(bar)// Old output (with --tree-shaking=true)consta=Symbol("foo");constb=Symbol(bar);// New output (with --tree-shaking=true)constb=Symbol(bar);

v9.39.2

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v10.26.1

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v10.26.0

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v10.25.0

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v1.0.0-beta.55

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🚀 Features

• add validation errors for incompatibleinlineDynamicImports options (#​7539) by@​Copilot
• r