rename modules after moving to appropriate folders

scripts/utils/common.js

@@ -0,0 +1,41 @@
+// common.js provides the advanced data structures. 
+
+export class Queue {
+     #elements;
+
+     constructor() {
+          this.#elements = [];
+     }
+
+     enqueue(element) {
+          this.#elements.push(element);
+     }
+
+     dequeue() {
+          return this.#elements.shift();
+     }
+
+     isEmpty() {
+          return this.#elements.length <= 0;
+     }
+}
+
+export class Stack {
+     #elements;
+
+     constructor() {
+          this.#elements = [];
+     }
+
+     push(element) {
+          this.#elements.push(element);
+     }
+
+     pop() {
+          return this.#elements.pop();
+     }
+
+     isEmpty() {
+          return this.#elements.length <= 0;
+     }
+}

scripts/utils/net.js

@@ -0,0 +1,51 @@
+/* net.js
+	This script provides network utilities.
+*/
+
+import texts from "/scripts/mapping/read.js";
+import logging from "/scripts/logging.js";
+
+export default class net {
+	/*
+	Download a file from the network or locally.
+	
+	@param {string} URL the URL to download
+	@param {string} TYPE the expected TYPE of file
+	@param {boolean} VERIFY_ONLY whether to verify the file only, not return its content
+	@param {boolean} STRICT strictly follow the file type provided
+	@returns {Promise} the downloaded file
+	*/
+	static async download(URL, TYPE, VERIFY_ONLY = false, STRICT = false) {
+		let CONNECT, DATA; 
+	
+		try {
+			CONNECT = await fetch(URL);
+	
+			if (CONNECT.ok && !VERIFY_ONLY) {
+				DATA = await CONNECT.text();
+			
+				if (
+					TYPE
+						? TYPE.toLowerCase().includes(`json`) || TYPE.toLowerCase().includes(`dictionary`)
+						: false
+				) {
+					try {
+					DATA = JSON.parse(DATA);
+					// When not in JSON, run this.
+					} catch(err) {
+						if (STRICT) {
+							// Should not allow the data to be returned since it's not correct. 
+							DATA = null;
+							throw new TypeError(texts.localized(`error_msg_notJSON`, false));
+						} else {logging.warn(texts.localized(`error_msg_notJSON`, false));}
+					};
+				};
+			}
+		} catch(err) {
+			throw err;
+		}
+	
+		// Return the filter.
+		return VERIFY_ONLY ? CONNECT.ok : DATA;
+	}
+}