Transformer

Features

• Transforming TypeScript to ESNext.
• Transforming React JSX to ESNext, with built-in React Refresh.
• TypeScript Isolated Declarations Emit without using the TypeScript compiler.

Installation

Node.js

Use the experimental node binding oxc-transform.

Rust

Use the umbrella crate oxc with the transformer feature.

Rust usage example can be found here.

API Example

import { transform } from "oxc-transform";
const transformed = transform(filePath, sourceCode, {
  typescript: {
    onlyRemoveTypeImports: true,
    declaration: { stripInternal: true },
  },
});
await fs.writeFile("out.js", transformed.code);
await fs.writeFile("out.d.ts", transformed.declaration);

Isolated Declarations

• unplugin-isolated-decl