swc-project/swc - CodSpeed

swc

Performance History

Latest Results

fix(es/minifier): Track assignment aliases in member objects (#12621)   **Description:** Member object analysis missed aliases on the right of assignments and assignments inside conditional or short-circuit branches. Follow those expressions so property access and mutation apply to each possible object alias. Follow the right side of plain and logical assignments; arithmetic assignments produce primitive values. Add a fixture that checks the reported aliases directly. This fixture fails with the original helper and passes with the fix. Add execution coverage for property writes and method calls, including two consecutive minifications. Update the ECharts output snapshot and add patch changesets for `swc_ecma_minifier` and `swc_core`. Validation on the implementation and fixtures before the changeset commit: - `cargo fmt --all` — passed. - `cargo clippy --all --all-targets -- -D warnings` — passed. - `cargo test -p swc_ecma_minifier` — passed without `UPDATE` after updating snapshots. - `(cd crates/swc_ecma_minifier && ./scripts/exec.sh)` — passed. - `cargo test -p swc_ecma_minifier --lib member_object_aliases` — passed again after reordering the final two fixture cases to avoid a trailing blank line. The crate tests emitted missing-`terser` messages from an optional character-frequency diagnostic; the tests passed. The existing `unignore_fixture` helper moved 37 fixture inputs because this checkout is under `.t3`. All moved inputs were restored after the tests. CI and review are pending. **Related issue (if exists):** Closes #12617 --------- Co-authored-by: Shafikul Islam Tanbir <58387559+shafiktanbir@users.noreply.github.com>

main

3 hours ago

docs: Require co-author credit for issue authors (#12622)

main

4 hours ago

docs: Require co-author credit for issue authors

t3/credit-issue-authors

4 hours ago

chore: Credit member object alias issue reporter Co-authored-by: Shafikul Islam Tanbir <58387559+shafiktanbir@users.noreply.github.com>

kdy1/fix-issue-12617

4 hours ago

chore: Add changeset

kdy1/fix-issue-12617

4 hours ago

fix(es/minifier): do not merge sequences across reads of globalThis properties

baltasarblanco:fix/sequences-global-this-property-read

7 hours ago

fix(es/minifier): treat spread arguments of pure calls as side effects

baltasarblanco:fix/pure-call-spread-iteration-1744d5f-v2

12 hours ago

fix(es/typescript): analyze runtime containers before erasure Resolve enum values, alias dependencies and runtime requirements against shared declaration identities before syntax erasure. Track AST declaration order and execution regions, including eager decorator evaluation. Recognize immediately invoked functions through parentheses while retaining type wrappers as analysis boundaries. Evaluate initializers with TypeScript rules independently of optional member-read inlining. Substitute eligible enum reads while the original AST is intact, then pass immutable facts to lowering. Preserve reference operations and distinct emitted object identities, and accumulate namespace instantiation without repeated subtree scans.

fix/ts-namespace-enum-bindings

13 hours ago

Latest Branches

docs: Require co-author credit for issue authors#12622

4 hours ago

40099e1

t3/credit-issue-authors

fix(es/minifier): Track assignment aliases in member objects#12621

4 hours ago

c21ed80

kdy1/fix-issue-12617

fix(es/minifier): do not merge sequences across reads of globalThis properties#12619

11 days ago

52c8d55

baltasarblanco:fix/sequences-global-this-property-read

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