test(dev): add hot API test cases#10181
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<!-- - What is this PR solving? Write a clear and concise description. - Reference the issues it solves (e.g. `fixes #123`). - What other alternatives have you explored? - Are there any parts you think require more attention from reviewers? Also, please make sure you do the following: - Read the Contributing Guidelines at https://rolldown.rs/contribution-guide/. - Check that there isn't already a PR that solves the problem the same way. If you find a duplicate, please help us review it. - Update the corresponding documentation if needed. - Include relevant tests that fail without this PR but pass with it. If the tests are not included, explain why. Thank you for contributing to Rolldown! --> ## Summary For full design and principles, please refer to #10164 (comment). ## The playgrounds Each playground is a small app (`index.html` + JS modules + `dev.config.mjs` + `package.json`) with a `__tests__/*.spec.ts` that edits a file and asserts on the running page. Several port behavior expectations from Vite's HMR tests (the `hmr-hot-off` fixture says so explicitly). | Group | Playgrounds | What they exercise | |---|---|---| | Accept | `hmr-accept-exports`, `hmr-nested-dep-accept` | `hot.accept` receiving new exports; accepting a dep deeper in the graph | | Circular graphs | `hmr-circular-accept-outside`, `hmr-circular-self-accept`, `hmr-invalidate-circular` | accept / self-accept / `hot.invalidate` when the edited module sits in an import cycle | | Lifecycle / state | `hmr-dispose-data`, `hmr-prune` | `hot.dispose` passing state through `hot.data`; `hot.prune` when a module is no longer imported | | Events | `hmr-hot-events`, `hmr-hot-off` | `hot.on` for built-in `vite:beforeUpdate` / `vite:afterUpdate`; `hot.off` removing one listener while another stays | | Dynamic import + lazy compilation | `hmr-lazy-dynamic-import-accept-dep`, `hmr-lazy-dynamic-import-self-accept`, `hmr-not-loaded-dynamic-import` | updates to dynamically imported modules, including under lazy compilation and when the module was never loaded | | Full reload | `hmr-before-full-reload` | behavior around an update that must fall back to a full page reload |
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## [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](#10211) Co-authored-by: shulaoda <[email protected]>
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Summary
For full design and principles, please refer to #10164 (comment).
The playgrounds
Each playground is a small app (
index.html+ JS modules +dev.config.mjs+package.json) with a__tests__/*.spec.tsthat edits a file and asserts on the running page. Several port behavior expectations from Vite's HMR tests (thehmr-hot-offfixture says so explicitly).hmr-accept-exports,hmr-nested-dep-accepthot.acceptreceiving new exports; accepting a dep deeper in the graphhmr-circular-accept-outside,hmr-circular-self-accept,hmr-invalidate-circularhot.invalidatewhen the edited module sits in an import cyclehmr-dispose-data,hmr-prunehot.disposepassing state throughhot.data;hot.prunewhen a module is no longer importedhmr-hot-events,hmr-hot-offhot.onfor built-invite:beforeUpdate/vite:afterUpdate;hot.offremoving one listener while another stayshmr-lazy-dynamic-import-accept-dep,hmr-lazy-dynamic-import-self-accept,hmr-not-loaded-dynamic-importhmr-before-full-reload