# BuildSourceMapOptions (/docs/api/interfaces/BuildSourceMapOptions)



Defined in: [packages/core/src/sourcemap.ts:40](https://github.com/austenstone/actio/blob/2b01e694a0f76521d8c073f3c6a2e48917d2c9d9/packages/core/src/sourcemap.ts#L40)

## Properties [#properties]

### headerLines [#headerlines]

```ts
headerLines: number;
```

Defined in: [packages/core/src/sourcemap.ts:42](https://github.com/austenstone/actio/blob/2b01e694a0f76521d8c073f3c6a2e48917d2c9d9/packages/core/src/sourcemap.ts#L42)

Number of banner lines prepended to the body, to offset generated lines.


## Sitemap

Browse the full documentation: [Markdown sitemap](https://austenstone.github.io/actio/sitemap.md) · [XML sitemap](https://austenstone.github.io/actio/sitemap.xml)