Assembly[] Array of script assemblies compiled by Unity.
Get all script assemblies compiled by Unity, filtered by AssembliesType.
This is a build-time view of the assemblies that Unity's compilation pipeline produces from your script files, including predefined assemblies like Assembly-CSharp and any assemblies you define with Assembly Definition (.asmdef) files.
It returns an array of Assembly objects, which are metadata descriptions, not to be confused with loaded System.Reflection.Assembly instances. Each entry includes information such as the assembly name, its source files, output path, references, defines, and compiler options.
The assemblies are filtered by AssembliesType so you can determine what the Player build would compile while in the Editor. This API is Editor-only and reflects the project's script structure regardless of whether those assemblies are currently loaded or successfully compiled into the runtime.
Important: Don't confuse this with the view of assemblies loaded into the current runtime execution context, which can be obtained through CurrentAssemblies.GetLoadedAssemblies.
Additional resources: Assembly.