add utility class Collection

Author: arcticnotes

lib/index.js

@@ -1 +1,2 @@
 export { WindowsScriptingHost} from './node/node-wsh.js';
+export { Collection} from './node/utils.js';

lib/node/utils.js

@@ -0,0 +1,24 @@
+export class Collection {
+
+	#ticket;
+	#type;
+
+	constructor( ticket, type) {
+		this.#ticket = ticket;
+		this.#type = type;
+	}
+
+	get length() {
+		return this.#ticket.get( 'Count');
+	}
+
+	get( indexBase0) {
+		return this.#ticket.get( 'Item', t2 => t2.apply.bind( t2))( this, [ indexBase0 + 1], t3 => new this.#type( t3));
+	}
+
+	*[ Symbol.iterator]() {
+		const length = this.length; // expect anomoly if the underlying collect is changing
+		for( let i = 0; i < length; i++)
+			yield this.get( i);
+	}
+}