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Fix the AV when accessing edge on IE debugger

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This commit is contained in:
Sheetal Nandi 2016-04-12 10:52:00 -07:00
parent a27b4d07ae
commit 5e308b9b9a
1 changed files with 2 additions and 2 deletions
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4
src/compiler/visitor.ts
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@ -461,7 +461,7 @@ namespace ts {
const edgeTraversalPath = nodeEdgeTraversalMap[node.kind];
if (edgeTraversalPath) {
for (const edge of edgeTraversalPath) {
const value = (<Map<any>>node)[edge.name];
const value = edge && (<Map<any>>node)[edge.name];
if (value !== undefined) {
result = isArray(value)
? reduceLeft(<NodeArray<Node>>value, f, result)
@ -619,7 +619,7 @@ namespace ts {
const edgeTraversalPath = nodeEdgeTraversalMap[node.kind];
if (edgeTraversalPath) {
for (const edge of edgeTraversalPath) {
const value = <Node | NodeArray<Node>>node[edge.name];
const value = edge && <Node | NodeArray<Node>>node[edge.name];
if (value !== undefined) {
let visited: Node | NodeArray<Node>;
if (isArray(value)) {