refactor(dev): move full-reload to client side by h-a-n-a · Pull Request #10207 · rolldown/rolldown

h-a-n-a · 2026-07-09T11:19:50Z

Summary

For full design and principles, please refer to #10164 (comment).

This PR removes the full-reload decision from the server's HMR update type, so the client decides to reload from its own boundary result.

h-a-n-a · 2026-07-09T11:20:06Z

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This branch still emits HmrUpdate::FullReload. Vite d07220fa removed the FullReload handler (the client decides reloads now), so reload- dependent browser tests time out against it. The bump to d07220fa belongs to the full-reload refactor branch (#10207). Co-Authored-By: Claude Fable 5 <[email protected]>

codspeed-hq · 2026-07-14T05:46:08Z

Merging this PR will improve performance by 19.94%

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Different runtime environments detected

Some benchmarks with significant performance changes were compared across different runtime environments,
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⚡ 1 improved benchmark
✅ 6 untouched benchmarks
⏩ 10 skipped benchmarks¹

Performance Changes

	Benchmark	`BASE`	`HEAD`	Efficiency
⚡	`collapse_codegen_chain`	13.8 ms	11.5 ms	+19.94%

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_{Comparing 07-09-refactor_dev_move_full-reload_to_client_side (8baa0fe) with 07-09-feat_dev_per-client_shipped_ledger_for_hmr_patch_sizing (408e889)}

10 benchmarks were skipped, so the baseline results were used instead. If they were deleted from the codebase, click here and archive them to remove them from the performance reports. ↩

graphite-app · 2026-07-15T07:25:17Z

Merge activity

Jul 15, 7:25 AM UTC: h-a-n-a added this pull request to the Graphite merge queue.
Jul 15, 7:31 AM UTC: The Graphite merge queue couldn't merge this PR because it had merge conflicts.
Jul 15, 7:31 AM UTC: The merge label 'graphite: merge-when-ready' was removed. This PR will no longer be merged by the Graphite merge queue
Jul 15, 7:31 AM UTC: The merge label 'graphite: merge-when-ready' was detected. This PR will be added to the Graphite merge queue once it meets the requirements.
Jul 15, 7:32 AM UTC: Graphite rebased this pull request, because this pull request is set to merge when ready.
Jul 15, 7:36 AM UTC: h-a-n-a added this pull request to the Graphite merge queue.
Jul 15, 7:42 AM UTC: Merged by the Graphite merge queue.

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## Summary For full design and principles, please refer to #10164 (comment). This PR removes the full-reload decision from the server's HMR update type, so the client decides to reload from its own boundary result.

@h-a-n-a

## [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]>

h-a-n-a mentioned this pull request Jul 9, 2026

feat(dev): client-side HMR #10164

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h-a-n-a mentioned this pull request Jul 9, 2026

test(dev): add hot API test cases #10181

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h-a-n-a changed the base branch from 07-07-feat_dev_client-side_hmr to graphite-base/10207 July 9, 2026 12:14

h-a-n-a force-pushed the 07-09-refactor_dev_move_full-reload_to_client_side branch from a5cca16 to e326387 Compare July 9, 2026 12:14

h-a-n-a force-pushed the graphite-base/10207 branch from 0cb9954 to 4306577 Compare July 9, 2026 12:14

h-a-n-a changed the base branch from graphite-base/10207 to 07-09-feat_dev_per-client_shipped_ledger_for_hmr_patch_sizing July 9, 2026 12:14

h-a-n-a mentioned this pull request Jul 9, 2026

feat(dev): per-client ship map for HMR patch sizing #10208

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h-a-n-a force-pushed the 07-09-feat_dev_per-client_shipped_ledger_for_hmr_patch_sizing branch from 4306577 to 824e009 Compare July 9, 2026 14:29

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h-a-n-a force-pushed the 07-09-refactor_dev_move_full-reload_to_client_side branch from 01f91d8 to 5dcb6e5 Compare July 10, 2026 05:40

h-a-n-a force-pushed the 07-09-feat_dev_per-client_shipped_ledger_for_hmr_patch_sizing branch from b7dd607 to b1eafbf Compare July 10, 2026 05:40

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h-a-n-a force-pushed the 07-09-feat_dev_per-client_shipped_ledger_for_hmr_patch_sizing branch from b1eafbf to a0d4f5c Compare July 10, 2026 06:15

h-a-n-a mentioned this pull request Jul 10, 2026

feat(dev): skip shipping factories for newly imported top-level modules #10223

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h-a-n-a force-pushed the 07-09-feat_dev_per-client_shipped_ledger_for_hmr_patch_sizing branch from a0d4f5c to 49572b5 Compare July 10, 2026 17:15

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h-a-n-a marked this pull request as ready for review July 14, 2026 05:39

h-a-n-a requested review from IWANABETHATGUY, hyfdev, sapphi-red and shulaoda as code owners July 14, 2026 05:39

h-a-n-a mentioned this pull request Jul 14, 2026

docs(dev): add HMR design #10271

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h-a-n-a force-pushed the 07-09-refactor_dev_move_full-reload_to_client_side branch from 91ac23a to c6aa5bc Compare July 15, 2026 05:01

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h-a-n-a force-pushed the 07-09-refactor_dev_move_full-reload_to_client_side branch from c6aa5bc to ec2a8f7 Compare July 15, 2026 06:17

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sapphi-red reviewed Jul 15, 2026

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Comment thread ...r/tests/playground/hmr-accept-outside-circular/__tests__/hmr-accept-outside-circular.spec.ts

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h-a-n-a force-pushed the 07-09-refactor_dev_move_full-reload_to_client_side branch from 8a48270 to 8baa0fe Compare July 15, 2026 07:13

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shulaoda added the graphite: merge-when-ready label Jul 15, 2026

graphite-app Bot changed the base branch from 07-09-feat_dev_per-client_shipped_ledger_for_hmr_patch_sizing to graphite-base/10207 July 15, 2026 07:24

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graphite-app Bot force-pushed the 07-09-refactor_dev_move_full-reload_to_client_side branch from 435dd2d to 3bd65ff Compare July 15, 2026 07:38

graphite-app Bot merged commit 3bd65ff into main Jul 15, 2026
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h-a-n-a mentioned this pull request Jul 15, 2026

[Feature Request]: compute HMR boundaries on the client instead of the server #10039

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rolldown-guard Bot mentioned this pull request Jul 15, 2026

release: v1.2.0 #10292

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h-a-n-a mentioned this pull request Jul 15, 2026

test: unify Vite in vite-test and test-dev-server #10293

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refactor(dev): move full-reload to client side#10207

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Merging this PR will improve performance by 19.94%

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