v1.2.6

[1.2.6] - 2026-08-26

🚀 Features

• minify: support property name mangling (#10374) by @Dunqing
• add tsconfig: string option to transform (#10727) by @sapphi-red
• rolldown_plugin_vite_transform: add tsconfig option (#10725) by @sapphi-red
• rolldown_plugin_vite_resolve: add top-level tsconfig option (#10724) by @sapphi-red
• dev: expose module graph queries on the dev engine handle (#10716) by @h-a-n-a

🐛 Bug Fixes

• dev: assign import bindings before initializing dependencies (#10783) by @h-a-n-a
• dev: copy star re-exports before initializing dependencies (#10761) by @h-a-n-a
• dev: register an empty exports object for a module without exports (#10772) by @h-a-n-a
• name the module when a codeSplitting group callback returns a wrong type (#10753) by @IWANABETHATGUY
• dev: map dev rename events like build watch (#10758) by @shulaoda
• clear resolution cache when TsconfigCache::clear is called (#10726) by @sapphi-red
• dev: resolve in-flight ensureLatestBuildOutput when the engine closes (#10730) by @h-a-n-a
• binding: replace undeclared BindingErrorsOr with BindingResult in hook types (#10717) by @h-a-n-a

🚜 Refactor

• rolldown_fs_watcher: collapse fs-watcher backends behind a single FsWatcher (#10735) by @shulaoda
• hoist invariants out of the codeSplitting group loop (#10744) by @IWANABETHATGUY

📚 Documentation

• document shared notify rename mapping (#10759) by @shulaoda
• update watch-mode internals for unified FsWatcher (#10736) by @shulaoda

⚡ Performance

• batch codeSplitting group test / name calls (#10745) by @IWANABETHATGUY
• deduplicate used symbol ref readers (#10742) by @Boshen
• reduce release debug formatting (#10728) by @Boshen
• enable compiler cache via module.enableCompileCache() (#10678) by @btea
• deduplicate regress codegen (#10732) by @Boshen

🧪 Testing

• define: add expected failure for default parameter scope (#10780) by @hyfdev
• use an absolute filename for transform tsconfig path (#10782) by @shulaoda

⚙️ Miscellaneous Tasks

• deps: upgrade oxc to 0.147.0 (#10767) by @camc314
• deps: update resolver dependencies (#10766) by @Boshen
• deps: update rollup submodule for tests to v4.62.5 (#10770) by @rolldown-guard[bot]
• deps: update dependency vite-plus to ^0.3.0 (#10757) by @renovate[bot]
• deps: update npm packages (#10750) by @renovate[bot]
• deps: update rust crates (#10748) by @renovate[bot]
• deps: update rust crate napi to v3.12.2 (#10738) by @renovate[bot]
• deps: update dependency rust to v1.98.0 (#10733) by @renovate[bot]
• wasi: cap each Node Test attempt with timeout to survive hangs (#10709) by @hyfdev

Co-authored-by: shulaoda 165626830+shulaoda@users.noreply.github.com