> For the complete documentation index, see [llms.txt](https://docs.yarnspinner.dev/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.yarnspinner.dev/3.1/api/csharp/yarn.compiler.upgrader/yarn.compiler.upgrader.upgraderesult/yarn.compiler.upgrader.upgraderesult.outputfile/yarn.compiler.upgrader.upgraderesult.outputfile.originalsource.md).

# OriginalSource

Field in [OutputFile](/3.1/api/csharp/yarn.compiler.upgrader/yarn.compiler.upgrader.upgraderesult/yarn.compiler.upgrader.upgraderesult.outputfile.md)

## Summary

The original text of the file, prior to upgrades.

```csharp
public string OriginalSource;
```