diff --git a/packages/vue-tsc/bin/vue-tsc.js b/packages/vue-tsc/bin/vue-tsc.js
index f63a8b619d..68f5d03fdd 100755
--- a/packages/vue-tsc/bin/vue-tsc.js
+++ b/packages/vue-tsc/bin/vue-tsc.js
@@ -14,9 +14,6 @@ fs.readFileSync = (...args) => {
 		tryReplace(/supportedJSExtensions = .*(?=;)/, s => s + '.concat([[".vue"]])');
 		tryReplace(/allSupportedExtensions = .*(?=;)/, s => s + '.concat([[".vue"]])');
 
-		// proxy startTracing, dumpTracingLegend
-		tryReplace(/ = tracingEnabled\./g, ` = require(${JSON.stringify(proxyApiPath)}).loadTsLib().`);
-
 		// proxy createProgram apis
 		tryReplace(/function createProgram\(.+\) {/, s => s + ` return require(${JSON.stringify(proxyApiPath)}).createProgram(...arguments);`);
 
diff --git a/packages/vue-tsc/src/index.ts b/packages/vue-tsc/src/index.ts
index 67f96a33c5..511d46ee7f 100644
--- a/packages/vue-tsc/src/index.ts
+++ b/packages/vue-tsc/src/index.ts
@@ -22,6 +22,9 @@ export function createProgram(options: ts.CreateProgramOptions) {
 	if (!options.options.noEmit && options.options.noEmitOnError)
 		throw toThrow('noEmitOnError is not supported');
 
+	if (options.options.extendedDiagnostics || options.options.generateTrace)
+		throw toThrow('--extendedDiagnostics / --generateTrace is not supported, please run `Write Virtual Files` in VSCode to write virtual files and use `--extendedDiagnostics` / `--generateTrace` via tsc instead of vue-tsc to debug.');
+
 	if (!options.host)
 		throw toThrow('!options.host');
 
@@ -153,10 +156,6 @@ export function createProgram(options: ts.CreateProgramOptions) {
 	return program;
 }
 
-export function loadTsLib() {
-	return ts;
-}
-
 function toThrow(msg: string) {
 	console.error(msg);
 	return msg;