[1.2.0] - 2026-07-15

🚀 Features

• dev: skip shipping factories for newly imported top-level modules (#10223) by @h-a-n-a
• dev: per-client ship map for HMR patch sizing (#10208) by @h-a-n-a
• dev: client-side HMR (#10164) by @h-a-n-a
• dev: send a full-reload update to clients when a tsconfig changes (#10262) by @shulaoda
• treat import.meta['url'] and import.meta['ROLLUP_FILE_URL_*'] as side-effect free (#10267) by @sapphi-red
• rewrite import.meta['url'] (#10251) by @sapphi-red
• add FILE_NOT_FOUND error (#10220) by @sapphi-red
• treat import.meta.ROLLUP_FILE_URL_* as side-effect free (#10217) by @sapphi-red

🐛 Bug Fixes

• sourcemap: preserve unmapped boundaries during composition (#10254) by @hyfdev
• [format] in *FileNames option for ESM format should be es instead of esm (#10214) by @sapphi-red
• sourcemap: preserve coarse mappings during composition (#10249) by @hyfdev
• rolldown_plugin_vite_import_glob: support tsconfig paths with import.meta.glob (#10167) by @sapphi-red
• dev: clear tsconfig caches for bare full builds (#10276) by @shulaoda
• dev: force a full rebuild when a tsconfig changes (#10261) by @shulaoda
• treat rooted drive-less module ids as absolute in preserveModules naming (#10235) by @IWANABETHATGUY
• watch: rebuild when tsconfig files change (#10258) by @shulaoda
• watch: drop tsconfig-merged transform options on each rebuild (#10257) by @shulaoda
• incorrect EMPTY_IMPORT_META warning for import.meta.ROLLUP_FILE_URL_* for CJS output (#10221) by @sapphi-red
• deconflict: rename CJS locals shadowing wrapped-ESM namespace objects (#9970) by @IWANABETHATGUY
• rolldown: drop the unused runtime module after entry-level external flattening (#10237) by @IWANABETHATGUY
• rolldown: re-propagate has_dynamic_exports to transitive star importers (#10239) by @IWANABETHATGUY
• tree-shaking: tree-shake destructured dynamic import namespace bindings (#10213) by @logaretm
• s390x: use json-escape-simd 3.1.1 for big-endian JSON escaping fix (#10211) by @satyamg1620

🚜 Refactor

• dev: move full-reload to client side (#10207) by @h-a-n-a
• readability follow-ups to the ReplaceWith migration (#10286) by @IWANABETHATGUY
• replace take_in-then-write-back with ReplaceWith and by-value moves (#10285) by @Boshen
• share the main resolver's cache with the transformer's tsconfig lookups (#10205) by @shulaoda
• rolldown: extract the ns star-external __reExport emission rule into LinkingMetadata (#10238) by @IWANABETHATGUY
• rolldown: unify link/generate diagnostics into a Diagnostics accumulator (#10234) by @IWANABETHATGUY
• sourcemap_filenames: drop dead sourcemap-filename plumbing (#10189) by @IWANABETHATGUY
• extract external import symbol merging into a method (#10224) by @IWANABETHATGUY
• rolldown: skip CJS namespace merging under strict execution order (#10203) by @hyfdev
• resolve the manual tsconfig per file instead of once at startup (#10200) by @shulaoda
• rolldown: route interop ESM init emission through a shared init-target view (#10202) by @hyfdev
• rolldown: collapse vestigial wrap-kind state and share chunk sort helper (#10201) by @hyfdev

📚 Documentation

• show plugin kinds in JSDoc and each hook's description (#10218) by @sapphi-red
• add an explanation about removing imports from external modules without any messages (#10215) by @sapphi-red

⚡ Performance

• sourcemap: owned merge in SourceJoiner::join (4005->5 allocs/chunk) (#10250) by @Boshen
• avoid redundant sourcemap string copies in collapse and minify paths (#10093) by @Boshen

🧪 Testing

• code-splitting: establish strict-order review baselines (#10287) by @hyfdev
• dev: add hot API test cases (#10181) by @h-a-n-a
• code-splitting: normalize strict execution order variants (#10277) by @hyfdev
• code-splitting: harden strict execution order coverage (#10252) by @hyfdev
• code-splitting: add strict execution order regressions (#10253) by @hyfdev

⚙️ Miscellaneous Tasks

• deps: update github actions (#10241) by @renovate[bot]
• deps: update oxc to 0.140.0 (#10274) by @shulaoda
• update Yunfei's GitHub username (#10275) by @hyfdev
• deps: update napi (#10260) by @renovate[bot]
• deps: update test262 submodule for tests (#10266) by @rolldown-guard[bot]
• deps: update dependency vite-plus to v0.2.4 (#10256) by @renovate[bot]
• deps: update napi (#10240) by @renovate[bot]
• deps: update oxc resolver to v11.24.2 (#10245) by @renovate[bot]
• deps: update rust crates (#10244) by @renovate[bot]
• disable Renovate updates for idna_adapter (#10248) by @shulaoda
• deps: update oxc resolver to v11.24.1 (#10232) by @renovate[bot]
• deps: update rust crate oxc_sourcemap to v8.1.1 (#10233) by @renovate[bot]
• deps: update dependency rolldown-plugin-dts to ^0.27.0 (#10206) by @renovate[bot]
• deps: upgrade sugar_path to v3 (#10230) by @hyfdev
• add dist-* to .gitignore in sourcemap-filenames/hash-final-content fixture (#10216) by @sapphi-red
• deps: update dependency rust to v1.97.0 (#10209) by @renovate[bot]

❤️ New Contributors

• @satyamg1620 made their first contribution in #10211

Co-authored-by: shulaoda [email protected]