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fix(es/minifier): Stop sequence merges at spreads in arrays and arguments merge_sequential_expr walks array elements and call, super and new arguments directly, so the earlier guard in is_skippable_for_seq did not cover `[...value, x]` or `f(...value, x)`. Stop merging at spread elements there too.

JohannesGezachew:fix-12282-array-spread-seq

2 hours ago

fix(es/minifier): Do not merge sequences across array spreads collapse_vars treated `[...value]` like a plain read of `value`, so an initializer that mutates the array through a call could be moved after the spread. Treat array spreads as not skippable, like object spreads.

JohannesGezachew:fix-12282-array-spread-seq

3 hours ago

fix(es/minifier): Guard the new for-if-else-break arm with the `loops` option **Description:** The bare-body `else break` arm added in the previous commit ran regardless of `options.loops`, so the transformation could not be turned off. The existing `break`-in-consequent arm predates that guard and is left as is; the guard is placed on the new arm only, so no existing behavior changes. Also updates `tests/libs-size.snapshot.md`: the compressed size of `terser.js` and `three.js` drops slightly, which is the same transformation already visible in the two benchmark bundles. **BREAKING CHANGE:** None **Related issue (if exists):** None

baltasarblanco:fix/minifier-for-if-else-break

4 hours ago

fix(es/minifier): Compress for-if-else-break with a bare loop body **Description:** `optimize_for_if_break` handles both `if (t) break;` and `if (t) cons; else break;`, but only when the loop body is a `BlockStmt`. `merge_for_if_break` covers the bare-body form, but only for a `break` in the consequent. A bare body with the `break` in the alternate was the one combination no pass handled. An earlier pass unwraps single-statement blocks before either runs, so `for (; bar();) { if (foo()) baz(); else break; }` reaches them in the bare form too and was missed as well. Since the `break` is in the alternate, the test is already the condition for continuing the loop and is not negated, matching the existing block-body arm. The consequent becomes the loop body rather than being dropped, so jumps inside it keep targeting this loop. A declaration is skipped: it is valid as an `if` branch under Annex B, but never as a bare loop body. Validation: `cargo test -p swc_ecma_minifier` (3098 passed, 0 failed), `./scripts/exec.sh` (488 and 2128 passed, 0 failed), `cargo fmt --all`, `cargo clippy -p swc_ecma_minifier --all-targets -- -D warnings`. **BREAKING CHANGE:** None **Related issue (if exists):** None

baltasarblanco:fix/minifier-for-if-else-break

4 hours ago

fix(es/parser): allow string import and export names after type

fix/parser-type-string-exports

6 hours ago

fix(es/parser): preserve type references named asserts before line breaks

fix/parser-asserts-linebreak

7 hours ago

fix(es/parser): allow string import and export names after type

fix/parser-type-string-exports

8 hours ago

fix(es/parser): allow string export names after type

fix/parser-type-string-exports

8 hours ago

Latest Branches

0%

fix(es/minifier): Do not merge sequences across array spreads#12375

2 hours ago

34bbeda

JohannesGezachew:fix-12282-array-spread-seq

+2%

fix(es/minifier): Compress for-if-else-break with a bare loop body#12374

4 hours ago

05a104d

baltasarblanco:fix/minifier-for-if-else-break

+2%

fix(es/parser): allow string import and export names after type#12371

8 hours ago

546067f

fix/parser-type-string-exports

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