diff --git a/runtime/JavaScript/src/antlr4/error/DiagnosticErrorListener.d.ts b/runtime/JavaScript/src/antlr4/error/DiagnosticErrorListener.d.ts
index b88fe66844..4b7d381ba3 100644
--- a/runtime/JavaScript/src/antlr4/error/DiagnosticErrorListener.d.ts
+++ b/runtime/JavaScript/src/antlr4/error/DiagnosticErrorListener.d.ts
@@ -1,9 +1,3 @@
 import {ErrorListener} from "./ErrorListener";
-import {Recognizer} from "../Recognizer";
-import {RecognitionException} from "./RecognitionException";
 
-export declare class DiagnosticErrorListener<TSymbol> implements ErrorListener<TSymbol> {
-
-    syntaxError(recognizer: Recognizer<TSymbol>, offendingSymbol: TSymbol, line: number, column: number, msg: string, e: RecognitionException | undefined): void;
-
-}
+export declare class DiagnosticErrorListener<TSymbol> extends ErrorListener<TSymbol> {}
diff --git a/runtime/JavaScript/src/antlr4/error/ErrorListener.d.ts b/runtime/JavaScript/src/antlr4/error/ErrorListener.d.ts
index 4b61236410..e3882711c9 100644
--- a/runtime/JavaScript/src/antlr4/error/ErrorListener.d.ts
+++ b/runtime/JavaScript/src/antlr4/error/ErrorListener.d.ts
@@ -1,6 +1,15 @@
-import {Recognizer} from "../Recognizer";
-import {RecognitionException} from "./RecognitionException";
+import { ATNConfigSet } from "../atn";
+import { BitSet } from '../misc/BitSet';
+import { DFA } from "../dfa";
+import { Recognizer } from "../Recognizer";
+import { RecognitionException } from "./RecognitionException";
 
 export declare class ErrorListener<TSymbol> {
+    reportAmbiguity(recognizer: Recognizer<TSymbol>, dfa: DFA, startIndex: number, stopIndex: number, exact: boolean, ambigAlts: BitSet, configs: ATNConfigSet): void;
+    
+    reportAttemptingFullContext(recognizer: Recognizer<TSymbol>, dfa: DFA, startIndex: number, stopIndex: number, conflictingAlts: BitSet, configs: ATNConfigSet): void;
+    
+    reportContextSensitivity(recognizer: Recognizer<TSymbol>, dfa: DFA, startIndex: number, stopIndex: number, prediction: number, configs: ATNConfigSet): void;
+    
     syntaxError(recognizer: Recognizer<TSymbol>, offendingSymbol: TSymbol, line: number, column: number, msg: string, e: RecognitionException | undefined): void;
 }
diff --git a/runtime/JavaScript/src/antlr4/misc/BitSet.d.ts b/runtime/JavaScript/src/antlr4/misc/BitSet.d.ts
new file mode 100644
index 0000000000..a3a74ee966
--- /dev/null
+++ b/runtime/JavaScript/src/antlr4/misc/BitSet.d.ts
@@ -0,0 +1,18 @@
+export declare class BitSet {
+    // write methods are not exposed based on this conversation https://github.com/antlr/antlr4/pull/4731#discussion_r1847139040
+    readonly length: number;
+
+    get(index: number): number;
+
+    values(): Array<number>;
+
+    minValue(): number;
+
+    hashCode(): number;
+
+    equals(): boolean;
+
+    toString(): string;
+
+    static _bitCount(l: number): number; 
+}