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A collection of JS module utilities written in Rust

// repository documentation

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A collection of JS module utilities written in Rust

## Usage

The package is published to npm as a WebAssembly module. Install with:

```bash
$ npm install fmu
```

```js
import { init, guessJsSyntax } from 'fmu'

// initialize wasm (MUST call this before any other APIs)
await init()

const code = `exports.foo = 'bar'`
console.log(await guessJsSyntax(code)) // "CJS"
```

> **Note**: For Vite, you have to pass a custom URL to `init()`. For example:
>
> ```js
> import { init } from 'fmu'
> import wasmUrl from 'fmu/wasm?url'
> await init(wasmUrl)
> ```

See [examples](./examples/) for usage with different setups.

## Development

Follow the [official guide](https://www.rust-lang.org/tools/install) to install Rust. Also install [wasm-pack](https://rustwasm.github.io/wasm-pack/installer/) to build Rust files into WebAssembly.

```bash
# Build wasm for dev (e.g. testing examples)
$ npm run dev

# Build wasm for publishing
$ npm run build

# Run unit and integration tests
$ cargo test
```

## Sponsors

## License

MIT

fmu

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