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Latest Results

refactor: remove unnecessary raw pattern parsing

chore/update-forked-react-compiler

6 hours ago

chore: Add changeset for react compiler update

chore/update-forked-react-compiler

7 hours ago

refactor: Remove production tracing hooks (#11945) **Description:** This removes the production tracing implementation paths from SWC while preserving the JS and CLI compatibility surfaces as deprecated no-ops. - Delete the `swc_timer` and `swc_trace_macro` crates. - Remove `swc_core`'s `trace_macro` feature and re-export. - Remove timer and `#[swc_trace]` usages from Rust crates. - Gate remaining tracing spans/events/instrumentation so they do not run in release builds. - Keep JS, Node binding, and CLI trace APIs available as deprecated no-ops. - Remove unused tracing subscriber/chrome dependencies and refresh committed lockfiles. **BREAKING CHANGE:** The Rust crates `swc_timer` and `swc_trace_macro` are removed. The `swc_core/trace_macro` feature is removed instead of being kept as a compatibility alias. JS and CLI trace entrypoints remain available but are deprecated no-ops and no trace output files are produced. **Validation:** - `git submodule update --init --recursive` - `cargo fmt --all` - `cargo check --all --all-targets` - `cargo check --release --all --all-targets` - `cargo clippy --all --all-targets -- -D warnings` - `pnpm install --frozen-lockfile` - `(cd packages/core && pnpm build:dev && pnpm test)` - `(cd packages/minifier && pnpm build:dev && pnpm test)` - Verified no remaining `swc_timer`, `swc_trace_macro`, `trace_macro`, `timer!`, or `#[swc_trace]` references in source/manifests/lockfiles. Broad `cargo test` was attempted and stopped on unrelated/environment issues: an existing Flow fixture failure in `swc`, missing local `deno` for `swc_bundler`, and a helper fixture diff in `swc_ecma_transforms_base`. **Related issue (if exists):** N/A

main

8 hours ago

chore(es/react-compiler): Update forked react compiler to 0.2.0

chore/update-forked-react-compiler

10 hours ago

Add tracing removal changeset

kdy1/remove-production-tracing

11 hours ago

fix(es/react-compiler): Scope ClassStaticBlock and TsModuleBlock as var boundaries (#11943) **Description:** This PR fixes scope analysis edge cases in the React Compiler where `var` declarations and TypeScript constructs were incorrectly hoisted or leaked across scope boundaries. **Design Notes:** `declare` and `global` are TypeScript type-system annotations that don't affect runtime emission, yet they still create declarations that downstream code can reference. The analyzer must walk their bodies normally and create bindings accordingly, rather than skipping traversal. **Changes:** - **Class static blocks as `var` boundaries** `var` declarations inside `static { }` blocks are now scoped to the block itself, matching ECMAScript semantics, instead of leaking into the enclosing function. - **TypeScript namespace / module scopes** `namespace` and `module` bodies now create proper `TsModuleBlock` scopes. Their members are no longer incorrectly hoisted to the Program scope. - **Consistent binding for `declare enum`** `declare enum` is now registered as a local binding so references resolve correctly. - **Refactoring** Renamed `enclosing_function_scope()` → `enclosing_var_scope()` and updated `ScopeFlags` definitions to make scope-kind checks clearer. **Known Limitations:** **TypeScript namespace merging is not yet supported.** The scope collector treats each `namespace`/`module` declaration as an isolated lexical scope. Exported members in one block are not visible to later merged blocks, and they are modeled as plain local bindings. This is a similar issue described in #11607. **BREAKING CHANGE:**  **Related issue (if exists):** - https://github.com/swc-project/swc/pull/11917#discussion_r3410499589

main

11 hours ago

Remove production tracing hooks

kdy1/remove-production-tracing

11 hours ago

chore: Add changeset for react compiler scope fix

magic-akari:fix/react-compiler-scope

12 hours ago

Latest Branches

+2%

chore(es/react-compiler): Update forked react compiler to 0.2.0#11946

6 hours ago

96be5a9

chore/update-forked-react-compiler

+6%

refactor: Remove production tracing hooks#11945

11 hours ago

bbf255a

kdy1/remove-production-tracing

-2%

fix(es/react-compiler): Scope ClassStaticBlock and TsModuleBlock as var boundaries#11943

12 hours ago

21230c1

magic-akari:fix/react-compiler-scope

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