feat(binding): add original getter to BindingMagicString#8533
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graphite-app[bot] merged 1 commit intomainfrom Mar 3, 2026
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feat(binding): add original getter to BindingMagicString#8533graphite-app[bot] merged 1 commit intomainfrom
graphite-app[bot] merged 1 commit intomainfrom
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Pull request overview
Adds parity features to BindingMagicString to better match the JavaScript magic-string API by exposing access to the original source string and expanding offset support across position-based operations.
Changes:
- Expose
originalas a read-only getter onBindingMagicString(and update TS typings). - Implement and surface
offset(constructor option + getter/setter) and apply it across index-based operations in the Rust binding. - Add/enable tests covering
originalandoffsetbehavior.
Reviewed changes
Copilot reviewed 3 out of 3 changed files in this pull request and generated 1 comment.
Show a summary per file
| File | Description |
|---|---|
| packages/rolldown/tests/magic-string/magic-string-original.test.ts | Adds dedicated tests for the new original getter (including behavior with offset/clone). |
| packages/rolldown/tests/magic-string/download-tests.mjs | Updates documentation/skip rules around supported BindingMagicString API and offset-related test skipping. |
| packages/rolldown/tests/magic-string/MagicString.test.ts | Enables the upstream-derived “with offset” test case. |
| packages/rolldown/src/binding.d.cts | Updates generated TS declarations to include original and offset (incl. constructor option). |
| crates/rolldown_binding/src/types/binding_magic_string.rs | Implements original getter and offset plumbing in the N-API Rust binding. |
Comments suppressed due to low confidence (1)
crates/rolldown_binding/src/types/binding_magic_string.rs:276
apply_offset_u32performs(i64::from(index) + self.offset) as u32with suppressed clippy lints. Ifoffsetis negative (or large enough to overflow), this can wrap to a hugeu32and then the subsequentchar_to_byte(...).expect(...)calls will panic, potentially crashing the process. Consider validating/clampingoffsetin the setter/constructor and using checked arithmetic + returning anapi::Resulterror (instead of panicking) for all offset-adjusted index conversions.
pub fn set_offset(&mut self, offset: i64) {
self.offset = offset;
}
/// Applies `self.offset` to a u32 character index.
#[inline]
fn apply_offset_u32(&self, index: u32) -> u32 {
#[expect(clippy::cast_sign_loss, clippy::cast_possible_truncation)]
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hyf0
reviewed
Mar 3, 2026
hyf0
approved these changes
Mar 3, 2026
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Summary\n\n- Ports the original property from the JavaScript magic-string library to BindingMagicString\n- Exposes the unmodified source string passed to the constructor as a read-only getter\n- Updates the generated TypeScript type definition (binding.d.cts)\n\nNote: The offset getter/setter and constructor option visible in this diff are from the parent PR #8531 (stacked beneath this one).\n\nPart of #7522.
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shulaoda
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Mar 5, 2026
## [1.0.0-rc.7] - 2026-03-05 ⚡ Smarter Code Generation Defaults - DCE-only minification and smart constant inlining are now enabled by default - Produces cleaner, smaller output bundles without requiring explicit configuration 💡 LLM-Friendly Bundle Analyzer Reports - New markdown output format for the bundle analyzer plugin with bundle summaries, module graphs, dependency chains, and optimization suggestions - Optimization suggestions now also recommend using the entriesAware option when common chunks contain modules only reachable from specific entries ### 💥 BREAKING CHANGES - enable minify: 'dce-only' by default (#8465) by @IWANABETHATGUY - settings `inlineConst: { mode: 'smart', pass: 1}` by default (#8444) by @IWANABETHATGUY ### 🚀 Features - binding: add original getter to BindingMagicString (#8533) by @IWANABETHATGUY - native-magic-string: add `offset` property support (#8531) by @IWANABETHATGUY - add `output.strict` option to control `"use strict"` directive emission (#8489) by @Copilot - watch: expose `watcher.compareContentsForPolling` (#8526) by @hyf0 - watch: use new watcher to support watch mode (#8475) by @hyf0 - rust/watch: handle bulk-change (#8466) by @hyf0 - add LLM-friendly markdown output format to bundle analyzer plugin (#8242) by @IWANABETHATGUY ### 🐛 Bug Fixes - expose `plugins` on `NormalizedInputOptions` for `buildStart` hook (#8521) by @Copilot - only uppercase facade symbols in JSX preserve mode (#8519) by @IWANABETHATGUY - binding: export BindingResult in generated dts header (#8537) by @minsoo-web - pre-resolve paths option to avoid `invoke_sync` deadlock (#8518) by @IWANABETHATGUY - remove debug-only jsx_preset and UntranspiledSyntaxError (#8511) by @IWANABETHATGUY - apply `topLevelVar` to exported `const`/`let` declarations (#8507) by @IWANABETHATGUY - rolldown_plugin_vite_web_worker_post: avoid replacing `new.target` (#8488) by @sapphi-red - update copyright year to 2026 (#8486) by @maciekzygmunt ### 🚜 Refactor - rust: use Oxc's SymbolFlags::ConstVariable instead of custom IsConst flag (#8543) by @Dunqing - rust: remove FacadeScoping, use Scoping::create_symbol for facade symbols (#8540) by @Dunqing - rust/watch: remove hacky `reset_closed_for_watch_mode` (#8530) by @hyf0 - binding: return &str instead of String in filename() getter (#8534) by @IWANABETHATGUY - rust: remove old watch mode implementation (#8525) by @hyf0 - rust/watch: simply watch logic in the binding layer (#8516) by @hyf0 - rust/watch: tweak struct/function names (#8464) by @hyf0 ### 📚 Documentation - explain how external modules work in rolldown (#8457) by @sapphi-red - add some diagrams using graphviz (#8499) by @sapphi-red - use `vitepress-plugin-graphviz` (#8498) by @sapphi-red - list s390x/ppc64le prebuilt binaries (#8495) by @crusty-voidzero - fix error type for `RolldownBuild.generate` and others (#8490) by @sapphi-red ### ⚡ Performance - string_wizard: reduce allocations and add ASCII fast paths (#8541) by @IWANABETHATGUY - use IndexBitSet to replace IndexVec<XXXIdx, bool> for module/stmt inclusion tracking (#8503) by @IWANABETHATGUY - plugin: use IndexBitSet to optimize skipped plugins checking (#8497) by @ShroXd - rust/tla: skip compute_tla if there is no module use TLA (#8487) by @ShroXd ### 🧪 Testing - node/watch: make watch tests run in concurrent and retry-able (#8512) by @hyf0 - add test case for static flag tree-shaking (#8476) by @IWANABETHATGUY - migrate post-banner sourcemap-with-shebang to Rust (#8477) by @Copilot ### ⚙️ Miscellaneous Tasks - vscode: `formatOnSave` for markdown files using oxc formatter (#8536) by @minsoo-web - deps: update test262 submodule for tests (#8528) by @sapphi-red - remove `retry` workaround from output paths test fixtures (#8520) by @Copilot - docs: add Shuyuan Wang (h-a-n-a) and remove from acknowledgements (#8509) by @Copilot - consolidate top_level_var test cases using configVariants (#8508) by @IWANABETHATGUY - add s390x and ppc64le linux gnu targets (#8493) by @Brooooooklyn ###◀️ Revert - fix(rolldown): increase tokio blocking threads size for watch mode (#8517) by @hyf0 ### ❤️ New Contributors * @minsoo-web made their first contribution in [#8536](#8536) * @crusty-voidzero made their first contribution in [#8495](#8495) * @maciekzygmunt made their first contribution in [#8486](#8486) Co-authored-by: shulaoda <165626830+shulaoda@users.noreply.github.com>
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Summary\n\n- Ports the original property from the JavaScript magic-string library to BindingMagicString\n- Exposes the unmodified source string passed to the constructor as a read-only getter\n- Updates the generated TypeScript type definition (binding.d.cts)\n\nNote: The offset getter/setter and constructor option visible in this diff are from the parent PR #8531 (stacked beneath this one).\n\nPart of #7522.