Caching (#14345)

* Caching

* fantomas

src/FSharp.DependencyManager.Nuget/FSharp.DependencyManager.Utilities.fs

@@ -64,7 +64,6 @@ module internal Utilities =
         |> Array.filter (fun r ->
             not (String.IsNullOrEmpty(r.NugetPackageId) || String.IsNullOrEmpty(r.FullPath))
             && not (equals r.IsNotImplementationReference "true")
-            && File.Exists(r.FullPath)
             && equals r.AssetType "runtime")
         |> Array.map (fun r -> r.FullPath)
         |> Array.distinct
@@ -260,7 +259,12 @@ module internal Utilities =
         let resolutionsFile, resolutions, references, loads, includes =
             if success && File.Exists(outputFile) then
                 let resolutions = getResolutionsFromFile outputFile
-                let references = (findReferencesFromResolutions resolutions) |> Array.toList
+
+                let references =
+                    (findReferencesFromResolutions resolutions)
+                    |> Array.filter (File.Exists)
+                    |> Array.toList
+
                 let loads = (findLoadsFromResolutions resolutions) |> Array.toList
                 let includes = (findIncludesFromResolutions resolutions) |> Array.toList
                 (Some outputFile), resolutions, references, loads, includes