cherry pick with fixes

Author: navya9singh

package-lock.json

@@ -46,6 +46,7 @@
         "@octokit/rest": "^21.0.1",
         "@types/chai": "^4.3.16",
         "@types/diff": "^5.2.1",
+        "@types/microsoft__typescript-etw": "^0.1.3",
         "@types/minimist": "^1.2.5",
         "@types/mocha": "^10.0.7",
         "@types/ms": "^0.7.34",
@@ -113,5 +114,8 @@
     "volta": {
         "node": "20.1.0",
         "npm": "8.19.4"
+    },
+    "dependencies": {
+        "@microsoft/typescript-etw": "^0.1.0"
     }
 }

package.json

@@ -5,6 +5,7 @@ export * from "../core.js";
 export * from "../debug.js";
 export * from "../semver.js";
 export * from "../performanceCore.js";
+export * from "../perfLogger.js";
 export * from "../tracing.js";
 export * from "../types.js";
 export * from "../sys.js";
@@ -75,4 +76,4 @@ export * from "../expressionToTypeNode.js";
 import * as moduleSpecifiers from "./ts.moduleSpecifiers.js";
 export { moduleSpecifiers };
 import * as performance from "./ts.performance.js";
-export { performance };
+export { performance };

src/compiler/_namespaces/ts.ts

@@ -0,0 +1,44 @@
+/** @internal */
+export interface PerfLogger {
+    logEvent(msg: string): void;
+    logErrEvent(msg: string): void;
+    logPerfEvent(msg: string): void;
+    logInfoEvent(msg: string): void;
+    logStartCommand(command: string, msg: string): void;
+    logStopCommand(command: string, msg: string): void;
+    logStartUpdateProgram(msg: string): void;
+    logStopUpdateProgram(msg: string): void;
+    logStartUpdateGraph(): void;
+    logStopUpdateGraph(): void;
+    logStartResolveModule(name: string): void;
+    logStopResolveModule(success: string): void;
+    logStartParseSourceFile(filename: string): void;
+    logStopParseSourceFile(): void;
+    logStartReadFile(filename: string): void;
+    logStopReadFile(): void;
+    logStartBindFile(filename: string): void;
+    logStopBindFile(): void;
+    logStartScheduledOperation(operationId: string): void;
+    logStopScheduledOperation(): void;
+}
+
+// Load optional module to enable Event Tracing for Windows
+// See https://github.com/microsoft/typescript-etw for more information
+let etwModule: typeof import("@microsoft/typescript-etw") | undefined;
+try {
+    const etwModulePath = process.env.TS_ETW_MODULE_PATH ?? "./node_modules/@microsoft/typescript-etw";
+
+    // require() will throw an exception if the module is not found
+    // It may also return undefined if not installed properly
+    etwModule = require(etwModulePath);
+}
+catch (e) {
+    etwModule = undefined;
+}
+
+/**
+ * Performance logger that will generate ETW events if possible - check for `logEvent` member, as `etwModule` will be `{}` when browserified
+ *
+ * @internal
+ */
+export const perfLogger: PerfLogger | undefined = etwModule?.logEvent ? etwModule : undefined;

src/compiler/perfLogger.ts

@@ -3804,6 +3804,7 @@ export class Session<TMessage = string> implements EventSender {
         let relevantFile: protocol.FileRequestArgs | undefined;
         try {
             request = this.parseMessage(message);
+            console.log(`${request.seq}:: ${request.command}`);
             relevantFile = request.arguments && (request as protocol.FileRequest).arguments.file ? (request as protocol.FileRequest).arguments : undefined;
 
             tracing?.instant(tracing.Phase.Session, "request", { seq: request.seq, command: request.command });
@@ -3854,7 +3855,7 @@ export class Session<TMessage = string> implements EventSender {
                 this.doOutput({ canceled: true }, request!.command, request!.seq, /*success*/ true, this.performanceData);
                 return;
             }
-
+            console.log(`${request?.seq}:: ${request?.command}:: Exception`, err);
             this.logErrorWorker(err, this.toStringMessage(message), relevantFile);
             tracing?.instant(tracing.Phase.Session, "commandError", { seq: request?.seq, command: request?.command, message: (err as Error).message });