add JavaScript code for Collection (untested)

src/javascript/collection.js

@@ -0,0 +1,63 @@
+/*
+IPseudoADS Queue
+Pseudocode-like collection management for JavaScript
+
+by buzz-ligthsnack-2007
+*/
+
+class Collection {
+  #contents = [];
+  #cursor = -1;
+
+  /*
+  Create a new collection.
+  */
+  constructor() {};
+
+  /*
+  Add an item to the end of the collection.
+
+  @param {Object} data the data to be added
+  */
+  addItem(data) {
+    this.#contents.push(data);
+  };
+
+  /*
+  Reset cursor to be to the start of the collection.
+  */
+  resetNext() {
+    this.#cursor = -1;
+  };
+
+  /*
+  Test: next item exists.
+
+  @return {bool} existence of the item
+  */
+  hasNext() {
+    return(this.#contents.length <= (this.#cursor + 1))
+  };
+
+  /*
+  Get the next item of the queue.
+
+  @return {Object} the next item
+  */
+  getNext() {
+    this.#cursor++;
+    return(this.#contents[this.#cursor]);
+  };
+
+  /*
+  Test: collection contains no elements
+
+  @return {bool} test result
+  */
+  isEmpty() {
+    return(this.#contents.length <= 0);
+  }
+}
+
+
+export {Collection as default};