## [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>