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fix(es/optimization): preserve JSON numeric values

fix/json-number-serialization

1 hour ago

fix(es/minifier): use numeric literals for non-finite values (#12048) **Description:** The optimizer currently represents `NaN` and infinities in several forms, including identifiers, divisions, and numeric literals. As these forms move through multiple optimization passes, they can be folded inconsistently and acquire incorrect truthiness or stringification. This PR canonicalizes non-finite optimization results as raw-free `Lit::Num` values. Minifier and simplifier helpers then preserve ECMAScript behavior for these numbers, while codegen remains responsible for choosing valid output syntax. **Related issue (if exists):** - #12043 - #12047 - #12050 - **#12048** (current) - #12051 - #12052 - #12053 - #12054 - #12055 - #12056 - #12057 - #12058 - #12049 - #12059 - #12060

main

2 hours ago

refactor(es/ast)!: split TypeScript this parameters

feat/ast-this-param

2 hours ago

Merge branch 'main' into chore/upgrade-regress-0.11

stormslowly:chore/upgrade-regress-0.11

21 hours ago

fix(es/minifier): index strings by UTF-16 code unit (#12054) **Description:** JavaScript string property indexing uses UTF-16 code units. Existing constant folding checked string-literal indices against WTF-8 byte length, which can treat out-of-bounds indices as valid for non-ASCII BMP characters, astral characters, and lone surrogates. In the expression simplifier, that mismatch could also reach an `unreachable!` branch. This PR validates and reads string-literal indices using UTF-16 code units in both the minifier and expression simplifier. It preserves the WTF-8 byte-length check as a fast upper-bound rejection, folds valid indices to the correct code unit, and handles UTF-16 out-of-bounds indices according to each pass's existing semantics. Coverage includes BMP non-ASCII characters, astral surrogate pairs, and lone surrogates. The change was verified with: - `cargo test -p swc_ecma_minifier -p swc_ecma_transforms_optimization` - `(cd crates/swc_ecma_minifier && ./scripts/exec.sh)` - `cargo fmt --all` - `cargo clippy --all --all-targets -- -D warnings` **Related issue (if exists):** - #12043 - #12047 - #12050 - #12048 - #12051 - #12052 - #12053 - **#12054** (current) - #12055 - #12056 - #12057 - #12058 - #12049 - #12059 - #12060

main

22 hours ago

fix(testing): check ignored fixtures relative to crate root (#12073) **Description:** - Check ignored fixtures relative to `CARGO_MANIFEST_DIR`. - Prevent hidden ancestor directories, such as `.codex` worktrees, from ignoring all fixtures. - Add regression coverage and clarify the documented behavior.

main

22 hours ago

fix(testing): check ignored fixtures relative to crate root

feat/scope-ignored-testing

23 hours ago

fix(es/minifier): index strings by UTF-16 code unit

fix/string-index-utf16

1 day ago

Latest Branches

0%

fix(es/optimization): preserve JSON numeric values#12051

3 days ago

83df80f

fix/json-number-serialization

-4%

refactor(es/ast)!: split TypeScript this parameters#12075

2 hours ago

e0a4c48

feat/ast-this-param

0%

chore: upgrade regress to 0.11.1#12070

22 hours ago

3b9c098

stormslowly:chore/upgrade-regress-0.11

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