fix(language-service): resolve the real path for symlink (#35895)

ivanwonder · matsko · commit 4e1d780554e9 · 2020-03-06T12:38:55.000-05:00
when AOT resolves the module name, it will preserve the path of the symlink, but the ts-server will return the real path for symlink. PR Close #35895
diff --git a/packages/language-service/src/reflector_host.ts b/packages/language-service/src/reflector_host.ts
@@ -19,13 +19,18 @@ class ReflectorModuleModuleResolutionHost implements ts.ModuleResolutionHost, Me
   });
 
   readonly directoryExists?: (directoryName: string) => boolean;
+  // Resolve a symbolic link.
+  realpath?: (path: string) => string;
 
   constructor(
       private readonly tsLSHost: ts.LanguageServiceHost,
       private readonly getProgram: () => ts.Program) {
     if (tsLSHost.directoryExists) {
       this.directoryExists = directoryName => tsLSHost.directoryExists !(directoryName);
     }
+    if (tsLSHost.realpath) {
+      this.realpath = path => tsLSHost.realpath !(path);
+    }
   }
 
   fileExists(fileName: string): boolean {
