## [0.30.0] - 2024-09-23

- c96b712 syntax: [**BREAKING**] Remove `SymbolFlags::ArrowFunction`
(#5857) (overlookmotel)

### Features

- ae89145 ast: Revert `#[non_exhaustive]` change (#5885) (Boshen)
- e8bf30a ast: Add `Comment::real_span` (#5764) (Boshen)
- d901772 codegen: Implement minify number from terser (#5929) (Boshen)
- 9f6696a codegen: Add new lines to `TSTypeParameterDeclaration` (#5853)
(Boshen)
- bcdbba3 codegen: Print jsdoc comments that are attached to statements
and class elements (#5845) (Boshen)
- 26386da codegen: Have `with_source_text` reserve memory for code
buffer (#5823) (DonIsaac)
- 4a62703 isolated-declarations: Handle `export` in the `namespace`
correctly (#5950) (Dunqing)
- 84a5816 isolated_declarations: Add `stripInternal` (#5878) (Boshen)
- dfbde2c isolated_declarations: Print jsdoc comments (#5858) (Boshen)
- 3bf7b24 linter: Make `typescript/no-duplicate-enum-values` a
`correctness` rule (#5810) (DonIsaac)
- 9076dee minifier: Implement part of `StatementFusion` (#5936) (Boshen)
- a111bb6 oxc_wasm: Add `verbse` option to `debug_dot` (#5879)
(IWANABETHATGUY)
- 8e7556f parser: Calculate leading and trailing position for comments
(#5785) (Boshen)
- 65c337a prettier: Improve ts compatibility (#5900) (Alexander S.)
- 6d9ccdd prettier: Support TSMappedType (#5834) (Alexander S.)
- b5ac5a6 prettier: Support TSModuleDeclaration (#5813) (Alexander S.)
- 74d8714 semantic: Add help message for invalid `let x?: number`
(#5969) (DonIsaac)
- 3230ae5 semantic: Add `SemanticBuilder::with_excess_capacity` (#5762)
(overlookmotel)
- a5f2e9a span: Impl `From<Atom<'a>>` for `Atom` (#5809) (DonIsaac)
- a07f03a transformer: Sync `Program::source_type` after transform
(#5887) (Boshen)
- 635e918 traverse: `generate_uid_name` method (#5839) (overlookmotel)

### Bug Fixes

- 66e919e ast: Correct TS types for JSX (#5884) (overlookmotel)
- 0d10521 ast: Serialize `JSXMemberExpressionObject` to estree (#5883)
(overlookmotel)
- a822c9d ast: Serialize `JSXElementName` to estree (#5882) (Boshen)
- f4aefb5 codegen: Print `let[0]` as `(let)[0]` (#5947) (Boshen)
- cee9d0b codegen: Fix spacing of `for await (x of y)` (#5890) (Boshen)
- 5901d2a codegen: Various spacing issues (#5820) (Boshen)
- fd1c46c isolated-declarations: Infer failed if there are two
setter/getter methods that need to be inferred (#5967) (Dunqing)
- 6df82ee isolated-declarations: False positive for class private method
that has arguments without type annotations (#5964) (Dunqing)
- 6a9e71d isolated-declarations: Wrap TSFunctionType in parentheses if
it is inside the `TSUnionType` (#5963) (Dunqing)
- ea32d5b isolated-declarations: Should print constructor assignments
first (#5934) (Dunqing)
- 0f96b59 isolated-declarations: Missing print comments in class's
private method (#5931) (Dunqing)
- 8780c54 isolated-declarations: Do not union a undefined when the param
type is any or unknown (#5930) (Dunqing)
- f07ff14 isolated-declarations: Should not transform signature that has
type annotation (#5927) (Dunqing)
- b6a9178 isolated-declarations: Don't collect references when
`ExportNamedDeclaration` has source (#5926) (Dunqing)
- 756a571 isolated-declarations: Missing empty export when has an export
declare (#5925) (Dunqing)
- e148c80 isolated_declarations: Try fix fixtures (Boshen)
- 9b3f763 isolated_declarations: Try fix new line issue (Boshen)
- ee748b0 isolated_declarations: Fix fixture spacing (Boshen)
- 362c427 mangler,codegen: Do not mangle top level symbols (#5965)
(Boshen)
- 127c881 napi/transform: Fix jsdoc links (#5886) (Boshen)
- 6c04fa1 napi/transform: Make isolated_declaration options optional
(#5880) (Boshen)
- 42dcadf parser: Hashbang comment should not keep the end newline char
(#5844) (Boshen)
- f1551d6 semantic: `?` on variable declaration type annotations is a
syntax error (#5956) (DonIsaac)
- a23879c semantic: Analyze `ReferenceFlags` incorrectly when there are
nested `AssignmentTarget` (#5847) (Dunqing)
- 87323c6 transformer: Arrow function transform: prevent stack getting
out of sync (#5941) (overlookmotel)
- 4e9e838 transformer: Fix arrow function transform (#5933)
(overlookmotel)
- 4d5c4f6 transformer: Fix reference flags in logical assignment
operator transform (#5903) (overlookmotel)
- d335a67 transformer: Fix references in logical assignment operator
transform (#5896) (overlookmotel)
- 9758c1a transformer: JSX source: add `var _jsxFileName` statement
(#5894) (overlookmotel)
- 49ee1dc transformer: Arrow function transform handle `this` in arrow
function in class static block (#5848) (overlookmotel)
- 172fa03 transformer: Fix stacks in arrow function transform (#5828)
(overlookmotel)
- d74c7fa transformer: Remove `AstBuilder::copy` from arrow functions
transform (#5825) (overlookmotel)
- 3cc38df transformer/react: React refresh panics when encounter `use`
hook (#5768) (Dunqing)

### Performance

- cd34f07 isolated-declarations: Combine type/value bindings and
type/value references into one (#5968) (Dunqing)
- c477424 mangler: Use `sort_unstable_by_key` instead of `sort_by`
(#5948) (Boshen)
- c3e0fb6 semantic: Simplify resetting ReferenceFlags in
`AssignmentExpression` (#5846) (Dunqing)
- ff7d9c1 transformer: Arrow function transform: calculate whether
`this` is in arrow function lazily (#5850) (Dunqing)
- fd70c4b transformer: Arrow function transform more efficient scope
search (#5842) (overlookmotel)
- 56703a3 transformer: Make branch more predictable in arrow function
transform (#5833) (overlookmotel)
- 36e698b transformer: Call `transform_jsx` in `exit_expression` rather
than `enter_expression` (#5751) (Dunqing)
- aac8316 transformer/react: Improve `is_componentish_name`'s
implementation (#5769) (Dunqing)

### Documentation

- acc2d16 ast: Document most TypeScript AST nodes (#5983) (DonIsaac)
- 47c2faa ast: Document TryStatement and related nodes (#5970)
(DonIsaac)
- 83ca7f5 diagnostics: Fully document `oxc_diagnostics` (#5865)
(DonIsaac)
- bacfbb8 oxc: Add submodule documentation (#5984) (DonIsaac)
- 3120c6c parser: Add module and struct level documentation (#5831)
(DonIsaac)
- 1ccf290 semantic: Document `AstNode` and `AstNodes` (#5872) (DonIsaac)
- e04841c syntax: Add ModuleRecord documentation (#5818) (DonIsaac)
- 7085829 transformer: Arrow function transform: comment about
incomplete implementation (#5945) (overlookmotel)
- 66b4688 transformer: React: convert docs to standard format (#5891)
(overlookmotel)
- 7f05eed transformer: Add comment about missing features in arrow
function transform (#5855) (overlookmotel)
- 8770647 transformer: Correct docs for arrow function transform (#5854)
(overlookmotel)

### Refactor

- f4fac0f ast: Remove `.iter()` where not needed (#5904) (camchenry)
- 17cd903 ast: Move functions to top level in `ast` macro (#5793)
(overlookmotel)
- cf97f6d ast: Import `syn` types in `ast` macro (#5792) (overlookmotel)
- dc10eaf ast: Split `ast` macro into multiple files (#5791)
(overlookmotel)
- 6dd6f7c ast: Change `Comment` struct (#5783) (Boshen)
- bb95306 codegen: Change annotation comment tests to snapshot (#5800)
(Boshen)
- e613a3d codegen: Prepare to add leading comments by adding a template
method pattern (#5784) (Boshen)
- 7caae5b codegen: Add `GetSpan` requirement to `Gen` trait (#5772)
(Boshen)
- c84bd28 isolated-declarations: Simplify to infer the getter and setter
methods (#5966) (Dunqing)
- 67b4220 isolated-declarations: Simplify handling VariableDeclaration
transform (#5916) (Dunqing)
- 2fd5c2a isolated-declarations: Pre-filter statements that do not need
to be transformed (#5909) (Dunqing)
- 943bd76 minifier: Move tests to their src files (#5912) (Boshen)
- cbaeea6 minifier: Clean up some tests (#5910) (Boshen)
- 144611e minifier: Align ast pass names with closure compiler (#5908)
(Boshen)
- 31e9db4 parser: Shorten `UniquePromise` code (#5805) (overlookmotel)
- 2322b8b parser: Remove dead code warning when running tests (#5804)
(overlookmotel)
- 4abfa76 parser: Add `--ast` and `--comments` to example (Boshen)
- a4b55bf parser: Use AstBuilder (#5743) (Boshen)
- d910304 semantic: Rename lifetime on `impl IntoIterator for &AstNodes`
(#5881) (overlookmotel)
- f360e2c semantic: Remove redundunt is_leading check for JSDoc (#5877)
(leaysgur)
- 9115dd9 semantic: Use `Comment::attached_to` for jsdoc attachment
(#5876) (Boshen)
- db4f16a semantic: Call `with_trivias` before `build_with_jsdoc`
(#5875) (Boshen)
- 3d13c6d semantic: Impl `IntoIterator` for `&AstNodes` (#5873)
(DonIsaac)
- 47d9ad8 semantic: Remove unused vars warning in release mode (#5803)
(overlookmotel)
- 155d7fc transformer: Arrow function transform: ignore type fields when
finding enclosing arrow function (#5944) (overlookmotel)
- 2cf5607 transformer: Split up logical assignment operator transform
into functions (#5902) (overlookmotel)
- 41fbe15 transformer: Internal functions not `pub` in logical
assignment operator transform (#5898) (overlookmotel)
- b11d91c transformer: Remove nested match in logical assignment
operator transform (#5897) (overlookmotel)
- 52c9903 transformer: JSX: use `AstBuilder::vec_from_iter` (#5862)
(overlookmotel)
- 74364ad transformer: JSX: merge `transform_jsx_attribute_item` into
`transform_jsx` (#5861) (overlookmotel)
- d2eaa7d transformer: Reorder match arms in JSX transform (#5860)
(overlookmotel)
- 58a8327 transformer: Simplify match in JSX transform (#5859)
(overlookmotel)
- b9c4564 transformer: Transformer example output semantic + transformer
errors (#5852) (overlookmotel)
- 03e02a0 transformer: Comment about potential improvement to arrow
function transform (#5841) (overlookmotel)
- 40cdad5 transformer: Remove repeat code in arrow function transform
(#5837) (overlookmotel)
- 3dd188c transformer: Deref `SymbolId` immediately (#5836)
(overlookmotel)
- 03a9e1a transformer: Reorder methods in arrow function transform
(#5830) (overlookmotel)
- 4d97184 transformer: Rename vars in arrow function transform (#5827)
(overlookmotel)
- 01c5b7c transformer: Shorten code in arrow functions transform (#5826)
(overlookmotel)
- 85ac3f7 transformer: Arrow functions transform do not wrap function
expressions in parentheses (#5824) (overlookmotel)
- 1c1353b transformer: Use AstBuilder instead of using struct
constructor (#5778) (Boshen)

### Testing

- 84b7d1a index: Add unit tests to `oxc_index` (#5979) (DonIsaac)
- d6cbbe7 isolated-declarations: Arrow function unions in return
signature (#5973) (DonIsaac)

---------

Co-authored-by: Boshen <1430279+Boshen@users.noreply.github.com>
Co-authored-by: autofix-ci[bot] <114827586+autofix-ci[bot]@users.noreply.github.com>