implemented frontend including separate message system; started to implement backend

yjs-poll/node_modules/lib0/url.js

@@ -0,0 +1,37 @@
+/**
+ * Utility module to work with urls.
+ *
+ * @module url
+ */
+
+import * as object from './object.js'
+
+/**
+ * Parse query parameters from an url.
+ *
+ * @param {string} url
+ * @return {Object<string,string>}
+ */
+export const decodeQueryParams = url => {
+  /**
+   * @type {Object<string,string>}
+   */
+  const query = {}
+  const urlQuerySplit = url.split('?')
+  const pairs = urlQuerySplit[urlQuerySplit.length - 1].split('&')
+  for (let i = 0; i < pairs.length; i++) {
+    const item = pairs[i]
+    if (item.length > 0) {
+      const pair = item.split('=')
+      query[decodeURIComponent(pair[0])] = decodeURIComponent(pair[1] || '')
+    }
+  }
+  return query
+}
+
+/**
+ * @param {Object<string,string>} params
+ * @return {string}
+ */
+export const encodeQueryParams = params =>
+  object.map(params, (val, key) => `${encodeURIComponent(key)}=${encodeURIComponent(val)}`).join('&')