chore(ai/design): add design doc about watch mode#8453
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graphite-app[bot] merged 1 commit intomainfrom Feb 26, 2026
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chore(ai/design): add design doc about watch mode#8453graphite-app[bot] merged 1 commit intomainfrom
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Pull request overview
This PR adds a comprehensive design document for the watch mode functionality in Rolldown. The design doc describes the actor-based architecture of the rolldown_watcher crate, documents the API contracts, and lists known gaps that need to be addressed. The PR also updates the design template and AGENTS.md to emphasize traceability between design docs and implementation work.
Changes:
- Added a detailed 343-line design document for watch mode covering architecture, API contracts, plugin hooks, file watching, and known gaps
- Updated template.md and AGENTS.md to require linking GitHub issues/PRs when implementing features described in design docs
Reviewed changes
Copilot reviewed 3 out of 3 changed files in this pull request and generated 1 comment.
| File | Description |
|---|---|
| meta/design/watch-mode.md | Comprehensive design document describing the watch mode architecture, including the actor pattern, event lifecycle, state machine, plugin hooks, and known gaps to be addressed |
| meta/design/template.md | Added guidance about linking relevant GitHub issues/PRs for traceability |
| AGENTS.md | Added note that design doc implementations should link relevant GitHub issues/PRs, and clarified that AGENTS.md is the source of truth (CLAUDE.md is a symlink) |
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This was referenced Feb 25, 2026
IWANABETHATGUY
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This design just mirrored the current code, some behaviors would be changed later.
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## [1.0.0-rc.6] - 2026-02-26 ### 💥 BREAKING CHANGES - css: remove `css_entry_filenames` , `css_chunk_filenames` and related code (#8402) by @hyf0 - css: drop builtin CSS bundling to explore alternative solutions (#8399) by @hyf0 ### 🚀 Features - rust/data-url: use hash as id for data url modules to prevent long string overhead (#8420) by @hyf0 - validate bundle stays within output dir (#8441) by @sapphi-red - rust: support `PluginOrder::PinPost` (#8417) by @hyf0 - support `ModuleType:Copy` (#8407) by @hyf0 - expose `ESTree` types from `rolldown/utils` (#8400) by @sapphi-red ### 🐛 Bug Fixes - incorrect sourcemap when postBanner/postFooter is used with shebang (#8459) by @Copilot - resolver: disable node_path option to align ESM resolver behavior (#8472) by @sapphi-red - parse `.js` within `"type": "commonjs"` as ESM for now (#8470) by @sapphi-red - case-insensitive filename conflict detection for chunk deduplication (#8458) by @Copilot - prevent inlining CJS exports that are mutated by importers (#8456) by @IWANABETHATGUY - parse `.cjs` / `.cts` / `.js` within `"type": "commonjs"` as CommonJS (#8455) by @sapphi-red - plugin/copy-module: correct hooks' priority (#8423) by @hyf0 - plugin/chunk-import-map: ensure `render_chunk_meta` run after users plugin (#8422) by @hyf0 - rust: correct hooks order of `DataUriPlugin` (#8418) by @hyf0 - `jsx.preserve` should also considering tsconfig json preserve (#8324) by @IWANABETHATGUY - `deferred_scan_data.rs "Should have resolved id: NotFound"` error (#8379) by @sapphi-red - cli: require value for `--dir`/`-d` and `--file`/`-o` (#8378) by @Copilot - dev: avoid mutex deadlock caused by inconsistent lock order (#8370) by @sapphi-red ### 🚜 Refactor - watch: rename TaskStart/TaskEnd to BundleStart/BundleEnd (#8463) by @hyf0 - rust: rename `rolldown_plugin_data_uri` to `rolldown_plugin_data_url` (#8421) by @hyf0 - bindingify-build-hook: extract helper for PluginContextImpl (#8438) by @ShroXd - give source loading a proper name (#8436) by @IWANABETHATGUY - ban holding DashMap refs across awaits (#8362) by @sapphi-red ### 📚 Documentation - add glob pattern usage example to input option (#8469) by @IWANABETHATGUY - remove `https://rolldown.rs` from links in reference docs (#8454) by @sapphi-red - mention execution order issue in `output.codeSplitting` docs (#8452) by @sapphi-red - clarify `output.comments` behavior a bit (#8451) by @sapphi-red - replace npmjs package links with npmx.dev (#8439) by @Boshen - reference: add `Exported from` for values / types exported from subpath exports (#8394) by @sapphi-red - add JSDocs for APIs exposed from subpath exports (#8393) by @sapphi-red - reference: generate reference pages for APIs exposed from subpath exports (#8392) by @sapphi-red - avoid pipe character in codeSplitting example to fix broken rendering (#8391) by @IWANABETHATGUY ### ⚡ Performance - avoid redundant PathBuf allocations in resolve paths (#8435) by @Brooooooklyn - bump to `sugar_path@2` (#8432) by @hyf0 - use flag-based convergence detection in include_statements (#8412) by @Brooooooklyn ### 🧪 Testing - execute `_test.mjs` even if `executeOutput` is false (#8398) by @sapphi-red - add retry to tree-shake/module-side-effects-proxy4 as it is flaky (#8397) by @sapphi-red - avoid `expect.assertions()` as it is not concurrent test friendly (#8383) by @sapphi-red - disable `mockReset` option (#8382) by @sapphi-red - fix flaky failure caused by concurrent resolveId calls (#8381) by @sapphi-red ### ⚙️ Miscellaneous Tasks - deps: update dependency rollup to v4.59.0 [security] (#8471) by @renovate[bot] - ai/design: add design doc about watch mode (#8453) by @hyf0 - deps: update oxc resolver to v11.19.0 (#8461) by @renovate[bot] - ai: introduce progressive spec-driven development pattern (#8446) by @hyf0 - deprecate output.legalComments (#8450) by @sapphi-red - deps: update dependency oxlint-tsgolint to v0.15.0 (#8448) by @renovate[bot] - ai: make CLAUDE.md a symlink of AGENTS.md (#8445) by @hyf0 - deps: update rollup submodule for tests to v4.59.0 (#8433) by @sapphi-red - deps: update test262 submodule for tests (#8434) by @sapphi-red - deps: update oxc to v0.115.0 (#8430) by @renovate[bot] - deps: update oxc apps (#8429) by @renovate[bot] - deps: update npm packages (#8426) by @renovate[bot] - deps: update rust crate owo-colors to v4.3.0 (#8428) by @renovate[bot] - deps: update github-actions (#8424) by @renovate[bot] - deps: update rust crates (#8425) by @renovate[bot] - deps: update oxc resolver to v11.18.0 (#8406) by @renovate[bot] - deps: update dependency oxlint-tsgolint to v0.14.2 (#8405) by @renovate[bot] - ban `expect.assertions` in all fixture tests (#8395) by @sapphi-red - deps: update oxc apps (#8389) by @renovate[bot] - ban `expect.assertions` in fixture tests (#8387) by @sapphi-red - enable lint for `_config.ts` files (#8386) by @sapphi-red - deps: update dependency oxlint-tsgolint to v0.14.1 (#8385) by @renovate[bot] Co-authored-by: shulaoda <165626830+shulaoda@users.noreply.github.com>
This was referenced Feb 26, 2026
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This design just mirrored the current code, some behaviors would be changed later.