fix: custom Exception extends Error

tunnelvisionlabs · Mar 28, 2019 · 45c9f5f · 45c9f5f
1 parent 1d9c5cc
commit 45c9f5f
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Showing 5 changed files with 9 additions and 0 deletions.
diff --git a/src/FailedPredicateException.ts b/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;

diff --git a/src/InputMismatchException.ts b/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);

diff --git a/src/LexerNoViableAltException.ts b/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;
 	}

diff --git a/src/NoViableAltException.ts b/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);

diff --git a/src/RecognitionException.ts b/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);
 	}
 
 	/**