> 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/yarn.compiler.compilationjob/yarn.compiler.compilationjob.typedeclarations.md).

# TypeDeclarations

Property in [CompilationJob](/3.1/api/csharp/yarn.compiler/yarn.compiler.compilationjob.md)

## Summary

The collection of type declarations that should be imported and made available to the compiler, prior to compilation.

```csharp
public IEnumerable<IType>? TypeDeclarations { get; set; }
```