Adds ability to override mount with publicServerURL for production uses

src/Config.js

@@ -4,6 +4,16 @@
 
 import cache from './cache';
 
+function removeTrailingSlash(str) {
+  if (!str) {
+    return str;
+  }
+  if (str.endsWith("/")) {
+    str = str.substr(0, str.length-1);
+  }
+  return str;
+}
+
 export class Config {
   constructor(applicationId: string, mount: string) {
     let DatabaseAdapter = require('./DatabaseAdapter');
@@ -24,7 +34,7 @@ export class Config {
     this.database = DatabaseAdapter.getDatabaseConnection(applicationId, cacheInfo.collectionPrefix);
 
     this.serverURL = cacheInfo.serverURL;
-    this.publicServerURL = cacheInfo.publicServerURL;
+    this.publicServerURL = removeTrailingSlash(cacheInfo.publicServerURL);
     this.verifyUserEmails = cacheInfo.verifyUserEmails;
     this.appName = cacheInfo.appName;
 
@@ -35,7 +45,7 @@ export class Config {
     this.userController = cacheInfo.userController;
     this.authDataManager = cacheInfo.authDataManager;
     this.customPages = cacheInfo.customPages || {};
-    this.mount = mount;
+    this.mount = removeTrailingSlash(mount);
     this.liveQueryController = cacheInfo.liveQueryController;
   }
 
@@ -43,6 +53,11 @@ export class Config {
     this.validateEmailConfiguration({verifyUserEmails: options.verifyUserEmails,
                                 appName: options.appName,
                                 publicServerURL: options.publicServerURL})
+    if (options.publicServerURL) {
+      if (!options.publicServerURL.startsWith("http://") && !options.publicServerURL.startsWith("https://")) {
+        throw "publicServerURL should be a valid HTTPS URL starting with https://"
+      }
+    }
   }
 
   static validateEmailConfiguration({verifyUserEmails, appName, publicServerURL}) {
@@ -56,6 +71,18 @@ export class Config {
     }
   }
 
+  get mount() {
+    var mount = this._mount;
+    if (this.publicServerURL) {
+      mount = this.publicServerURL;
+    }
+    return mount;
+  }
+
+  set mount(newValue) {
+    this._mount = newValue;
+  }
+
   get invalidLinkURL() {
     return this.customPages.invalidLink || `${this.publicServerURL}/apps/invalid_link.html`;
   }