Change the way utils load.

app/renderer/js/components/webview.js

@@ -23,9 +23,6 @@ class WebView extends BaseComponent {
 		this.zoomFactor = 1.0;
 		this.loading = false;
 		this.isActive = isActive;
-		this.domainUtil = new DomainUtil();
-		this.systemUtil = new SystemUtil();
-		this.linkUtil = new LinkUtil();
 		this.badgeCount = 0;
 	}
 
@@ -51,9 +48,9 @@ class WebView extends BaseComponent {
 	registerListeners() {
 		this.$el.addEventListener('new-window', event => {
 			const {url} = event;
-			const domainPrefix = this.domainUtil.getDomain(this.index).url;
+			const domainPrefix = DomainUtil.getDomain(this.index).url;
 
-			if (this.linkUtil.isInternal(domainPrefix, url)) {
+			if (LinkUtil.isInternal(domainPrefix, url)) {
 				event.preventDefault();
 				this.$el.loadURL(url);
 			} else {
@@ -72,7 +69,7 @@ class WebView extends BaseComponent {
 
 		this.$el.addEventListener('did-fail-load', event => {
 			const {errorDescription} = event;
-			const hasConnectivityErr = (this.systemUtil.connectivityERR.indexOf(errorDescription) >= 0);
+			const hasConnectivityErr = (SystemUtil.connectivityERR.indexOf(errorDescription) >= 0);
 			if (hasConnectivityErr) {
 				console.error('error', errorDescription);
 				this.checkConnectivity();
@@ -80,10 +77,10 @@ class WebView extends BaseComponent {
 		});
 
 		this.$el.addEventListener('did-start-loading', () => {
-			let userAgent = this.systemUtil.getUserAgent();
+			let userAgent = SystemUtil.getUserAgent();
 			if (!userAgent) {
-				this.systemUtil.setUserAgent(this.$el.getUserAgent());
-				userAgent = this.systemUtil.getUserAgent();
+				SystemUtil.setUserAgent(this.$el.getUserAgent());
+				userAgent = SystemUtil.getUserAgent();
 			}
 			this.$el.setUserAgent(userAgent);
 		});

app/renderer/js/main.js

@@ -24,14 +24,13 @@ class ServerManagerView {
 	}
 
 	init() {
-		this.domainUtil = new DomainUtil();
 		this.initTabs();
 		this.initActions();
 		this.registerIpcs();
 	}
 
 	initTabs() {
-		const servers = this.domainUtil.getDomains();
+		const servers = DomainUtil.getDomains();
 		if (servers.length > 0) {
 			for (let i = 0; i < servers.length; i++) {
 				this.initServer(servers[i], i);

app/renderer/js/preference.js

@@ -13,13 +13,12 @@ class PreferenceView {
 	}
 
 	init() {
-		this.domainUtil = new DomainUtil();
 		this.initServers();
 		this.initActions();
 	}
 
 	initServers() {
-		const servers = this.domainUtil.getDomains();
+		const servers = DomainUtil.getDomains();
 		this.$serverInfoContainer.innerHTML = servers.length ? '' : 'Add your first server to get started!';
 
 		this.initNewServerForm();
@@ -64,7 +63,7 @@ class PreferenceView {
 				</div>`;
 		this.$serverInfoContainer.appendChild(this.insertNode(serverInfoTemplate));
 		document.getElementById(`delete-server-action-${index}`).addEventListener('click', () => {
-			this.domainUtil.removeDomain(index);
+			DomainUtil.removeDomain(index);
 			this.initServers();
 			// alert('Success. Reload to apply changes.');
 			ipcRenderer.send('reload-main');
@@ -109,13 +108,13 @@ class PreferenceView {
 			this.$newServerButton.classList.add('hidden');
 		});
 		this.$saveServerButton.addEventListener('click', () => {
-			this.domainUtil.checkDomain(this.$newServerUrl.value).then(domain => {
+			DomainUtil.checkDomain(this.$newServerUrl.value).then(domain => {
 				const server = {
 					alias: this.$newServerAlias.value,
 					url: domain,
 					icon: this.$newServerIcon.value
 				};
-				this.domainUtil.addDomain(server);
+				DomainUtil.addDomain(server);
 				this.$saveServerButton.classList.add('hidden');
 				this.$newServerButton.classList.remove('hidden');
 				this.$newServerForm.classList.add('hidden');

app/renderer/js/utils/domain-util.js

@@ -4,9 +4,17 @@ const {app} = require('electron').remote;
 const JsonDB = require('node-json-db');
 const request = require('request');
 
+let instance = null;
+
 const defaultIconUrl = 'https://chat.zulip.org/static/images/logo/zulip-icon-128x128.271d0f6a0ca2.png';
 class DomainUtil {
 	constructor() {
+		if (instance) {
+			return instance;
+		} else {
+			instance = this;
+		}
+
 		this.db = new JsonDB(app.getPath('userData') + '/domain.json', true, true);
 		// Migrate from old schema
 		if (this.db.getData('/').domain) {
@@ -16,6 +24,8 @@ class DomainUtil {
 			});
 			this.db.delete('/domain');
 		}
+
+		return instance;		
 	}
 
 	getDomains() {
@@ -69,4 +79,4 @@ class DomainUtil {
 	}
 }
 
-module.exports = DomainUtil;
+module.exports = new DomainUtil();

app/renderer/js/utils/link-util.js

@@ -26,4 +26,4 @@ class LinkUtil {
     }
 }
 
-module.exports = LinkUtil;
+module.exports = new LinkUtil();

app/renderer/js/utils/system-util.js

@@ -52,4 +52,4 @@ class SystemUtil {
 	}
 }
 
-module.exports = SystemUtil;
+module.exports = new SystemUtil();