fix: custom Exception extends Error

src/FailedPredicateException.ts

@@ -32,6 +32,8 @@ export class FailedPredicateException extends RecognitionException {
 			recognizer.inputStream,
 			recognizer.context,
 			FailedPredicateException.formatMessage(predicate, message));
+		Object.setPrototypeOf(this, FailedPredicateException.prototype);
+
 		let s: ATNState = recognizer.interpreter.atn.states[recognizer.state];
 
 		let trans = s.transition(0) as AbstractPredicateTransition;

src/InputMismatchException.ts

@@ -24,6 +24,7 @@ export class InputMismatchException extends RecognitionException {
 		}
 
 		super(recognizer, recognizer.inputStream, context);
+		Object.setPrototypeOf(this, InputMismatchException.prototype);
 
 		if (state !== undefined) {
 			this.setOffendingState(state);

src/LexerNoViableAltException.ts

@@ -28,6 +28,8 @@ export class LexerNoViableAltException extends RecognitionException {
 		startIndex: number,
 		deadEndConfigs: ATNConfigSet | undefined) {
 		super(lexer, input);
+		Object.setPrototypeOf(this, LexerNoViableAltException.prototype);
+
 		this._startIndex = startIndex;
 		this._deadEndConfigs = deadEndConfigs;
 	}

src/NoViableAltException.ts

@@ -74,6 +74,8 @@ export class NoViableAltException extends RecognitionException {
 		}
 
 		super(recognizer, input, ctx);
+		Object.setPrototypeOf(this, NoViableAltException.prototype);
+
 		this._deadEndConfigs = deadEndConfigs;
 		this._startToken = startToken as Token;
 		this.setOffendingToken(recognizer, offendingToken);

src/RecognitionException.ts

@@ -68,6 +68,8 @@ export class RecognitionException extends Error {
 		if (recognizer) {
 			this._offendingState = recognizer.state;
 		}
+		// see https://github.com/Microsoft/TypeScript-wiki/blob/master/Breaking-Changes.md#extending-built-ins-like-error-array-and-map-may-no-longer-work
+		Object.setPrototypeOf(this, RecognitionException.prototype);
 	}
 
 	/**

src/index.ts

@@ -2,12 +2,14 @@
  * Copyright 2016 The ANTLR Project. All rights reserved.
  * Licensed under the BSD-3-Clause license. See LICENSE file in the project root for license information.
  */
+
 export * from "./ParserInterpreter";
 export * from "./Parser";
+
 export * from "./ANTLRErrorListener";
 export * from "./ANTLRErrorStrategy";
-// export * from "./ANTLRFileStream";
 export * from "./ANTLRInputStream";
+export * from "./BailErrorStrategy";
 export * from "./BufferedTokenStream";
 export * from "./CharStream";
 export * from "./CharStreams";
@@ -17,6 +19,7 @@ export * from "./CommonToken";
 export * from "./CommonTokenFactory";
 export * from "./CommonTokenStream";
 export * from "./ConsoleErrorListener";
+export * from "./Decorators";
 export * from "./DefaultErrorStrategy";
 export * from "./Dependents";
 export * from "./DiagnosticErrorListener";
@@ -44,12 +47,9 @@ export * from "./TokenFactory";
 export * from "./TokenSource";
 export * from "./TokenStream";
 export * from "./TokenStreamRewriter";
-// export * from "./UnbufferedCharStream";
-// export * from "./UnbufferedTokenStream";
 export * from "./Vocabulary";
 export * from "./VocabularyImpl";
 export * from "./WritableToken";
-export * from "./BailErrorStrategy";
 
 export * from "./atn";
 export * from "./dfa";