diff --git a/build/lib/tsb/index.js b/build/lib/tsb/index.js
index eb5a7de7489..22014c9d696 100644
--- a/build/lib/tsb/index.js
+++ b/build/lib/tsb/index.js
@@ -28,7 +28,10 @@ function createNullCompiler() {
 const _defaultOnError = (err) => console.log(JSON.stringify(err, null, 4));
 function create(projectPath, existingOptions, config, onError = _defaultOnError) {
     function printDiagnostic(diag) {
-        if (!diag.file || !diag.start) {
+        if (diag instanceof Error) {
+            onError(diag.message);
+        }
+        else if (!diag.file || !diag.start) {
             onError(ts.flattenDiagnosticMessageText(diag.messageText, '\n'));
         }
         else {
@@ -130,4 +133,4 @@ function create(projectPath, existingOptions, config, onError = _defaultOnError)
     return result;
 }
 exports.create = create;
-//# 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
\ No newline at end of file
+//# 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
\ No newline at end of file
diff --git a/build/lib/tsb/index.ts b/build/lib/tsb/index.ts
index 0c5952cec34..670ac6542e7 100644
--- a/build/lib/tsb/index.ts
+++ b/build/lib/tsb/index.ts
@@ -40,9 +40,11 @@ export function create(
 	onError: (message: string) => void = _defaultOnError
 ): IncrementalCompiler {
 
-	function printDiagnostic(diag: ts.Diagnostic): void {
+	function printDiagnostic(diag: ts.Diagnostic | Error): void {
 
-		if (!diag.file || !diag.start) {
+		if (diag instanceof Error) {
+			onError(diag.message);
+		} else if (!diag.file || !diag.start) {
 			onError(ts.flattenDiagnosticMessageText(diag.messageText, '\n'));
 		} else {
 			const lineAndCh = diag.file.getLineAndCharacterOfPosition(diag.start);