Fix completions and brace in empty file (microsoft#22620)

mjbvz · Andy · commit 984aaa3ee99b · 2018-03-16T11:05:33.000-07:00
Fixes microsoft#22618
diff --git a/src/services/completions.ts b/src/services/completions.ts
@@ -1628,7 +1628,7 @@ namespace ts.Completions {
         }
 
         function isFromClassElementDeclaration(node: Node) {
-            return isClassElement(node.parent) && isClassLike(node.parent.parent);
+            return node.parent && isClassElement(node.parent) && isClassLike(node.parent.parent);
         }
 
         function isParameterOfConstructorDeclaration(node: Node) {
diff --git a/tests/cases/fourslash/completionAfterBrace.ts b/tests/cases/fourslash/completionAfterBrace.ts
@@ -0,0 +1,9 @@
+/// <reference path='fourslash.ts'/>
+
+////   
+//// }/**/
+////   
+
+
+goTo.marker();
+verify.not.completionListIsEmpty();

Original file line number	Diff line number	Diff line change
`@@ -1628,7 +1628,7 @@ namespace ts.Completions {`
`1628`	`1628`	`}`
`1629`	`1629`
`1630`	`1630`	`function isFromClassElementDeclaration(node: Node) {`
`1631`		`- return isClassElement(node.parent) && isClassLike(node.parent.parent);`
	`1631`	`+ return node.parent && isClassElement(node.parent) && isClassLike(node.parent.parent);`
`1632`	`1632`	`}`
`1633`	`1633`
`1634`	`1634`	`function isParameterOfConstructorDeclaration(node: Node) {`