Update symlink cache from AutoImportProvider resolution even if host project already contains the file via its realpath

src/server/project.ts

@@ -1944,15 +1944,15 @@ namespace ts.server {
                 for (const resolution of resolutions) {
                     if (!resolution.resolvedFileName) continue;
                     const { resolvedFileName, originalPath } = resolution;
+                    if (originalPath) {
+                        symlinkCache.setSymlinkedDirectoryFromSymlinkedFile(originalPath, resolvedFileName);
+                    }
                     if (!program.getSourceFile(resolvedFileName) && (!originalPath || !program.getSourceFile(originalPath))) {
                         rootNames = append(rootNames, resolvedFileName);
                         // Avoid creating a large project that would significantly slow down time to editor interactivity
                         if (dependencySelection === PackageJsonAutoImportPreference.Auto && rootNames.length > this.maxDependencies) {
                             return ts.emptyArray;
                         }
-                        if (originalPath) {
-                            symlinkCache.setSymlinkedDirectoryFromSymlinkedFile(originalPath, resolvedFileName);
-                        }
                     }
                 }
             }

tests/cases/fourslash/server/autoImportProvider7.ts

@@ -0,0 +1,68 @@
+/// <reference path="../fourslash.ts" />
+
+// @Filename: /tsconfig.json
+//// { "compilerOptions": { "module": "commonjs" } }
+
+// @Filename: /package.json
+//// { "dependencies": { "mylib": "file:packages/mylib" } }
+
+// @Filename: /packages/mylib/package.json
+//// { "name": "mylib", "version": "1.0.0", "main": "index.js", "types": "index" }
+
+// @Filename: /packages/mylib/index.ts
+//// export * from "./mySubDir";
+
+// @Filename: /packages/mylib/mySubDir/index.ts
+//// export * from "./myClass";
+//// export * from "./myClass2";
+
+// @Filename: /packages/mylib/mySubDir/myClass.ts
+//// export class MyClass {}
+
+// @Filename: /packages/mylib/mySubDir/myClass2.ts
+//// export class MyClass2 {}
+
+// @link: /packages/mylib -> /node_modules/mylib
+
+// @Filename: /src/index.ts
+//// 
+//// const a = new MyClass/*1*/();
+//// const b = new MyClass2/*2*/();
+
+goTo.marker("1");
+format.setOption("newLineCharacter", "\n");
+
+verify.completions({
+  marker: "1",
+  includes: [{
+    name: "MyClass",
+    source: "mylib",
+    sourceDisplay: "mylib",
+    hasAction: true,
+    sortText: completion.SortText.AutoImportSuggestions,
+  }],
+  preferences: {
+    includeCompletionsForModuleExports: true,
+    includeInsertTextCompletions: true,
+    allowIncompleteCompletions: true,
+  }
+});
+
+verify.applyCodeActionFromCompletion("1", {
+  name: "MyClass",
+  source: "mylib",
+  description: `Import 'MyClass' from module "mylib"`,
+  data: {
+    exportName: "MyClass",
+    fileName: "/packages/mylib/index.ts",
+  },
+  preferences: {
+    includeCompletionsForModuleExports: true,
+    includeCompletionsWithInsertText: true,
+    allowIncompleteCompletions: true,
+  },
+  newFileContent: `import { MyClass } from "mylib";
+
+const a = new MyClass();
+const b = new MyClass2();`,
+});