---
url: /reference/api/Interface.OutExtensionContext.md
---
# Interface: OutExtensionContext

Defined in: [src/features/output.ts:15](https://github.com/rolldown/tsdown/blob/eb40c95efdf7f98d0aa7b0178a3b7322986bd419/src/features/output.ts#L15)

## Properties

### format

```ts
format: InternalModuleFormat
```

Defined in: [src/features/output.ts:17](https://github.com/rolldown/tsdown/blob/eb40c95efdf7f98d0aa7b0178a3b7322986bd419/src/features/output.ts#L17)

***

### options

```ts
options: InputOptions
```

Defined in: [src/features/output.ts:16](https://github.com/rolldown/tsdown/blob/eb40c95efdf7f98d0aa7b0178a3b7322986bd419/src/features/output.ts#L16)

***

### pkgType?

```ts
optional pkgType?: PackageType;
```

Defined in: [src/features/output.ts:21](https://github.com/rolldown/tsdown/blob/eb40c95efdf7f98d0aa7b0178a3b7322986bd419/src/features/output.ts#L21)

`"type"` field in project's `package.json`.