Improve error handling

actions-languageservice/src/test-utils/logger.ts

@@ -0,0 +1,19 @@
+import {Logger} from "../log";
+
+export class TestLogger implements Logger {
+  error(message: string): void {
+    throw new Error(`Error: ${message}`);
+  }
+
+  warn(message: string): void {
+    console.warn(message);
+  }
+
+  info(message: string): void {
+    console.info(message);
+  }
+
+  log(message: string): void {
+    console.warn(message);
+  }
+}