Remember to check for existence of target.parent

Andy Hanson · Andy Hanson · commit e8e7ec6c6265 · 2016-09-01T07:23:43.000-07:00
diff --git a/src/services/services.ts b/src/services/services.ts
@@ -2810,7 +2810,7 @@ namespace ts {
     function getAncestorCallLikeExpression(node: Node): CallLikeExpression | undefined {
         const target = climbPastManyPropertyAccesses(node);
         const callLike = target.parent;
-        return isCallLikeExpression(callLike) && getInvokedExpression(callLike) === target && callLike;
+        return callLike && isCallLikeExpression(callLike) && getInvokedExpression(callLike) === target && callLike;
     }
 
     function tryGetSignatureDeclaration(typeChecker: TypeChecker, node: Node): SignatureDeclaration | undefined {

Original file line number	Diff line number	Diff line change
`@@ -2810,7 +2810,7 @@ namespace ts {`
`2810`	`2810`	`function getAncestorCallLikeExpression(node: Node): CallLikeExpression \| undefined {`
`2811`	`2811`	`const target = climbPastManyPropertyAccesses(node);`
`2812`	`2812`	`const callLike = target.parent;`
`2813`		`- return isCallLikeExpression(callLike) && getInvokedExpression(callLike) === target && callLike;`
	`2813`	`+ return callLike && isCallLikeExpression(callLike) && getInvokedExpression(callLike) === target && callLike;`
`2814`	`2814`	`}`
`2815`	`2815`
`2816`	`2816`	`function tryGetSignatureDeclaration(typeChecker: TypeChecker, node: Node): SignatureDeclaration \| undefined {`