fixup! fix(language-service): Add resource files as roots to their as…

…sociated projects

packages/language-service/src/adapters.ts

@@ -105,12 +105,6 @@ export class LanguageServiceAdapter implements NgCompilerAdapter {
     // getScriptInfo() will not create one if it does not exist.
     // In this case, we *want* a script info to be created so that we could
     // keep track of its version.
-    const snapshot = this.project.getScriptSnapshot(fileName);
-    if (!snapshot) {
-      // This would fail if the file does not exist, or readFile() fails for
-      // whatever reasons.
-      throw new Error(`Failed to get script snapshot while trying to read ${fileName}`);
-    }
     const version = this.project.getScriptVersion(fileName);
     this.lastReadResourceVersion.set(fileName, version);
     const scriptInfo = this.project.getScriptInfo(fileName);
@@ -126,6 +120,7 @@ export class LanguageServiceAdapter implements NgCompilerAdapter {
     if (!this.project.isRoot(scriptInfo)) {
       this.project.addRoot(scriptInfo);
     }
+    const snapshot = scriptInfo.getSnapshot();
     return snapshot.getText(0, snapshot.getLength());
   }