oxc/npm/oxc-transform
oxc-bot 3e05055783
release(crates): v0.46.0 (#8487)
## [0.46.0] - 2025-01-14

- 7eb6ccd ast: [**BREAKING**] Remove unused and not useful `ContentHash`
(#8483) (Boshen)

### Features

- 8accfef minifier: Minify `var x; void x` -> `void 0` (#8466) (Boshen)
- 870a583 minifier: Fold `false['toString']` (#8447) (Boshen)
- 4ad695d napi/minify: Implement napi (#8478) (Boshen)
- 9d550aa span: Add `Atom::r#static` (#8479) (_Kerman)

### Bug Fixes

- 4071878 isolated-declarations: Retain `declare` declarations when they
are exported (#8477) (Dunqing)
- 7ee7634 isolated-declarations: Import statement disappears when import
binding is referenced in nested `typeof` (#8476) (Dunqing)
- 7252cb0 isolated-declarations: Unexpected error when global `Symbol`
as property key (#8475) (Dunqing)
- 4c6675c minifier: Do not convert while to fors in DCE (#8484) (Boshen)
- 1d6e84d minifier: Fix incorrect `null.toString()` and `1n.toString()`
(#8464) (Boshen)
- 25d4bf9 minifier: Remove usage of empty spans (#8462) (Boshen)
- dd64340 minifier: Keep `return undefined` in async generator function
(#8439) (Boshen)
- c444de8 transformer/arrow-functions: Transform `this` and `super`
incorrectly in async arrow function (#8435) (Dunqing)
- 270245f transformer/typescript: Correct the semantic for
TSImportEqualsDeclaration transformation (#8463) (Dunqing)
- 2a400d6 transformer/typescript: Retain TSImportEqualsDeclaration when
it is exported (Dunqing)
- ab694b0 transformer/typescript: Retain `TSImportEqualsDeclaration` in
`namespace` when its binding has been referenced or
`onlyRemoveTypeImports` is true (#8458) (Dunqing)

### Performance

- 7a8200c mangler: Allocate base54 name without heap allocation (#8472)
(Boshen)
- 31dac22 mangler: Allocate data in arena (#8471) (Boshen)
- 8fc238a minifier: Merge `Normalize` and `RemoveSyntax` pass (#8467)
(Boshen)
- 372eb09 minifier: Preallocate mangler's semantic data (#8451) (Boshen)

### Refactor

- 6e64eef codegen: Remove `match_expression!` (#8450) (Boshen)
- de5b288 span: Rename `Atom::new_const` method (#8480) (overlookmotel)
- c83ce5c transformer/typescript: Improve transforming namespace (#8459)
(Dunqing)

Co-authored-by: Boshen <1430279+Boshen@users.noreply.github.com>
2025-01-14 19:40:44 +08:00
..
scripts chore(doc): replace main/master to tag/commit to make the url always accessible (#7298) 2024-11-16 21:00:30 +08:00
CHANGELOG.md release(crates): v0.30.4 (#6134) 2024-09-28 13:08:44 +08:00
package.json release(crates): v0.46.0 (#8487) 2025-01-14 19:40:44 +08:00
README.md docs(transformer): fix formatting of README (#6111) 2024-09-27 14:27:21 +01:00

Oxc Transform

This is alpha software and may yield incorrect results, feel free to submit a bug report.

TypeScript and React JSX Transform

import assert from 'assert';
import oxc from 'oxc-transform';

const { code, declaration, errors } = oxc.transform(
  'test.ts',
  'class A<T> {}',
  {
    typescript: {
      declaration: true, // With isolated declarations in a single step.
    },
  },
);

assert.equal(code, 'class A {}\n');
assert.equal(declaration, 'declare class A<T> {}\n');
assert(errors.length == 0);

Isolated Declarations for Standalone DTS Emit

Conforms to TypeScript Compiler's --isolated-declaration .d.ts emit.

Usage

import assert from 'assert';
import oxc from 'oxc-transform';

const { map, code, errors } = oxc.isolatedDeclaration('test.ts', 'class A {}');

assert.equal(code, 'declare class A {}\n');
assert(errors.length == 0);

API

See index.d.ts.

export declare function transform(
  filename: string,
  sourceText: string,
  options?: TransformOptions,
): TransformResult;

export function isolatedDeclaration(
  filename: string,
  sourceText: string,
  options?: IsolatedDeclarationsOptions,
): IsolatedDeclarationsResult;