## [0.48.0] - 2025-01-24

- 54d0fac span: [**BREAKING**] Remove `PartialEq` impl for `&Atom`
(#8642) (overlookmotel)

### Features

- 2a2ad53 allocator: Add `Allocator::capacity` and `used_bytes` methods
(#8621) (overlookmotel)
- 6801c81 allocator: Add `Allocator::new` and `with_capacity` methods
(#8620) (overlookmotel)
- 99607d3 codegen: Print comments in `TSTypeLiteral` (#8679) (Boshen)
- 4ae568e linter: Add DiagnosticResult to the Reporters for receiving a
sub part result (#8666) (Alexander S.)
- 343690e minifier: Replace `Number.*_SAFE_INTEGER`/`Number.EPSILON`
(#8682) (sapphi-red)
- 0c5bb30 minifier: Replace
`Number.POSITIVE_INFINITY`/`Number.NEGATIVE_INFINITY`/`Number.NaN`
(#8681) (sapphi-red)
- 835b258 minifier: Compress `typeof foo === 'object' && foo !== null`
to `typeof foo == 'object' && !!foo` (#8638) (sapphi-red)
- 2bcbed2 minifier: Compress `(a = b) === null || a === undefined` to
`(a = b) == null` (#8637) (sapphi-red)

### Bug Fixes

- 40316af linter: Fix github `endColumn` output (#8647) (Alexander S.)
- 883d25b minifier: Keep esm in dce (#8677) (Boshen)
- 878ce10 minifier: `void 0` equals to `undefined` (#8673) (Boshen)
- ba201a6 minifier: Remove "non esbuild optimizations" which is
incorrect (#8668) (Boshen)
- 8c8b5fa minifier: Avoid minifing `String(a)` into `"" + a` for symbols
(#8612) (翠 / green)
- 4ff6e85 minifier: Remove expression statement `void 0` (#8602)
(Boshen)
- 93d643e minifier: Keep side effects when folding const conditional
exprs (#8591) (camc314)
- 178c232 parser: Parse `intrinsic` TS keyword (#8627) (Kevin Deng 三咲智子)
- 48717ab parser: Parse `true` as `TSLiteralType` (#8626) (Kevin Deng
三咲智子)
- d1c5dc4 semantic: Fix const assertions in `UnresolvedReferencesStack`
(#8653) (overlookmotel)

### Performance

- 787aaad allocator: Make `String` non-drop (#8617) (overlookmotel)
- d966e0a codegen: Do not check for comments if turned off (#8598)
(Boshen)
- 3fa87ff lexer: Peak 2 bytes after `!` (#8662) (Boshen)
- 9953ac7 minifier: Add `LatePeepholeOptimizations` (#8651) (Boshen)
- 00dc63f minifier: Only substitute typed array constructor once (#8649)
(Boshen)
- 3e19e4e minifier: Remove the useless empty statement removal code in
statement fusion (#8646) (Boshen)
- 5b3c412 minifier: Only run optimizations on local changes (#8644)
(Boshen)

### Documentation

- c1d243b allocator: Improve docs for `Allocator` (#8623)
(overlookmotel)
- 01a5e5d allocator: Improve docs for `HashMap` (#8616) (overlookmotel)
- 87568a1 allocator: Reformat docs (#8615) (overlookmotel)
- 3be0392 lexer: Fix doc comment (#8664) (overlookmotel)
- 5029547 semantic: Fix and reformat doc comments (#8652)
(overlookmotel)

### Refactor

- ae8db53 allocator: Move `Allocator` into own module (#8656)
(overlookmotel)
- 0f85bc6 allocator: Reduce repeat code to prevent `Drop` types in arena
(#8655) (overlookmotel)
- de76eb1 allocator: Reorder `Box` methods (#8654) (overlookmotel)
- 997859c ast: Align `#[estree(via)]` behavior (#8599) (sapphi-red)
- db863a3 codegen: Use `Stack` for `binary_expr_stack` (#8663) (Boshen)
- 8cce69a codegen: Remove `match_member_expression` (#8597) (Boshen)
- a3dc4c3 crates: Clean up snapshot files (#8680) (Boshen)
- e66da9f isolated_declarations, linter, minifier, prettier, semantic,
transformer: Remove unnecessary `ref` / `ref mut` syntax (#8643)
(overlookmotel)
- 23b49a6 linter: Use `cow_to_ascii_lowercase` instead
`cow_to_lowercase` (#8678) (Boshen)
- ce2b9da minifier: Remove `wrap_to_avoid_ambiguous_else` (#8676)
(Boshen)
- 75a579b minifier: Clean up
`has_no_side_effect_for_evaluation_same_target` (#8675) (Boshen)
- 1bb2539 minifier: Move more code into `minimize_conditions` local loop
(#8671) (Boshen)
- 13e4a45 minifier: Move conditional assignment to `minimize_conditions`
(#8669) (Boshen)
- ae895d8 minifier: Use `NonEmptyStack` for function stack (#8661)
(Boshen)
- 3802d28 minifier: Clean up `try_minimize_conditional` (#8660) (Boshen)
- dcc1f2b minifier: Rename `ast_passes` to `peephole` (#8635) (Boshen)
- 52458de minifier: Remove unused code and traits (#8632) (Boshen)
- 6f95cd5 minifier: Remove all the unnecessary fake ast passes (#8618)
(Boshen)
- 712cae0 minifier: Run the compressor on all test cases (#8604)
(Boshen)
- 864b8ef parser: Shorten code (#8640) (overlookmotel)
- b8d9a51 span: Deal only in owned `Atom`s (#8641) (overlookmotel)
- 20f52b1 span: Remove unnecessary lifetimes on `Atom` impls (#8639)
(overlookmotel)
- ac4f98e span: Derive `Copy` on `Atom` (#8596) (branchseer)
- a730f99 transformer: Move `create_prototype_member` to utils module
(#8657) (Dunqing)
- 61d96fd transformer/class-properties: Correct comments (#8636)
(overlookmotel)

### Testing

- 39dbd2d codegen: Fix snapshot file (#8685) (Boshen)
- d9f5e7f minifier: Enable passed esbuild tests (Boshen)

Co-authored-by: Boshen <[email protected]>