Add missing/undocumented functions (#27464)

Those functions and properties are not documented.

types/traverse/index.d.ts

@@ -121,6 +121,11 @@ declare namespace traverse {
      */
     parent: TraverseContext | undefined;
 
+    /**
+     * The contexts of the node's parents.
+     */
+    parents: TraverseContext[];
+
     /**
      * The name of the key of the present node in its parent.
      * This is `undefined` for the root node.
@@ -172,6 +177,11 @@ declare namespace traverse {
      */
     delete(stopHere?: boolean): void;
 
+    /**
+     * Object keys of the node.
+     */
+    keys: string[] | null;
+
     /**
      * Call this function before all of the children are traversed.
      * You can assign into `this.keys` here to traverse in a custom order.
@@ -192,6 +202,16 @@ declare namespace traverse {
      * Call this function after each of the children are traversed.
      */
     post(callback: (this: TraverseContext, child: any) => void): void;
+
+    /**
+     * Stops traversal entirely.
+     */
+    stop(): void;
+
+    /**
+     * Prevents traversing descendents of the current node.
+     */
+    block(): void;
   }
 }
 

types/traverse/traverse-tests.ts

@@ -62,3 +62,17 @@ function testPaths(){
         })
     })
 }
+
+function testPropsAndFuncs(){
+    var obj = [ 5, 6, -3, [ 7, 8, -2, 1 ], { f : 10, g : -13 } ];
+
+    traverse(obj).forEach(function (x) {
+		console.log(this.keys);
+		console.log(this.parents);
+
+        if (this.level == 2) this.block();
+		if (this.level > 10) this.stop();
+    });
+
+    console.dir(obj);
+}