# Configuration

Configure Orval using an `orval.config.(js|mjs|ts)` file at the root of your project.

## Configuration Categories

| Category | Description |
|----------|-------------|
| **Input** | Path to the specification, or a configuration object for transforming the specification before generation |
| **Output** | Output path and configuration for what is generated and how |
| **Hooks** | Scripts to run on certain events |

## Basic Example

```ts
import { defineConfig } from 'orval';

export default defineConfig({
  petstore: {
    input: './petstore.yaml',
    output: './petstore.ts',
    hooks: {
      afterAllFilesWrite: 'prettier --write',
    },
  },
});
```

## Multiple Specifications

```ts
import { defineConfig } from 'orval';

export default defineConfig({
  petstore: {
    input: './petstore.yaml',
    output: './src/api/petstore.ts',
  },
  users: {
    input: './users.yaml',
    output: './src/api/users.ts',
  },
});
```