Add early bail out for token nodes

ahejlsberg · ahejlsberg · commit 24a6a087f53a · 2017-06-23T08:31:48.000-10:00
diff --git a/src/compiler/parser.ts b/src/compiler/parser.ts
@@ -51,7 +51,7 @@ namespace ts {
      * @param cbNodes a callback to be invoked for embedded array
      */
     export function forEachChild<T>(node: Node, cbNode: (node: Node) => T | undefined, cbNodes?: (nodes: NodeArray<Node>) => T | undefined): T | undefined {
-        if (!node) {
+        if (!node || node.kind <= SyntaxKind.LastToken) {
             return;
         }
         switch (node.kind) {

Original file line number	Diff line number	Diff line change
`@@ -51,7 +51,7 @@ namespace ts {`
`51`	`51`	`* @param cbNodes a callback to be invoked for embedded array`
`52`	`52`	`*/`
`53`	`53`	`export function forEachChild<T>(node: Node, cbNode: (node: Node) => T \| undefined, cbNodes?: (nodes: NodeArray<Node>) => T \| undefined): T \| undefined {`
`54`		`- if (!node) {`
	`54`	`+ if (!node \|\| node.kind <= SyntaxKind.LastToken) {`
`55`	`55`	`return;`
`56`	`56`	`}`
`57`	`57`	`switch (node.kind) {`