---
url: /reference/OutputOptions.sourcemapDebugIds.md
---
# sourcemapDebugIds

* **Type**: `boolean`
* **Optional**

Whether to include [debug IDs](https://github.com/tc39/ecma426/blob/main/proposals/debug-id.md) in the sourcemap.

When `true`, a unique debug ID will be emitted in source and sourcemaps which streamlines identifying sourcemaps across different builds.

## Default

```ts
false
```