diff --git a/runtime/JavaScript/src/antlr4/error/LexerNoViableAltException.d.ts b/runtime/JavaScript/src/antlr4/error/LexerNoViableAltException.d.ts
new file mode 100644
index 0000000000..e832818a5a
--- /dev/null
+++ b/runtime/JavaScript/src/antlr4/error/LexerNoViableAltException.d.ts
@@ -0,0 +1,13 @@
+import {ATNConfigSet} from "../atn";
+import {Recognizer} from "../Recognizer";
+import { Token } from "../Token";
+import {RecognitionException} from "./RecognitionException";
+
+export declare class LexerNoViableAltException extends RecognitionException {
+
+    deadEndConfigs: ATNConfigSet;
+
+    constructor(recognizer: Recognizer<any>);
+
+    startIndex: number;
+}
diff --git a/runtime/JavaScript/src/antlr4/error/index.d.ts b/runtime/JavaScript/src/antlr4/error/index.d.ts
index 2af8a0c5f1..6e078980b2 100644
--- a/runtime/JavaScript/src/antlr4/error/index.d.ts
+++ b/runtime/JavaScript/src/antlr4/error/index.d.ts
@@ -1,4 +1,5 @@
 export * from './RecognitionException';
+export * from './LexerNoViableAltException';
 export * from './NoViableAltException';
 export * from './FailedPredicateException';
 export * from './InputMismatchException';