diff --git a/server/server.js b/server/server.js
index a03e5acbb..d073975a0 100644
--- a/server/server.js
+++ b/server/server.js
@@ -5,13 +5,13 @@ const server = http.createServer(app);
 const { Server } = require("socket.io");
 const io = new Server(server);
 const dayjs = require("dayjs");
-const {R} = require("redbean-node");
+const { R } = require("redbean-node");
 const passwordHash = require('password-hash');
 const jwt = require('jsonwebtoken');
 const Monitor = require("./model/monitor");
 const fs = require("fs");
-const {getSettings} = require("./util-server");
-const {Notification} = require("./notification")
+const { getSettings } = require("./util-server");
+const { Notification } = require("./notification")
 const args = require('args-parser')(process.argv);
 
 console.log("args:")
@@ -32,14 +32,14 @@ let needSetup = false;
 
     app.use('/', express.static("dist"));
 
-    app.post('/test-webhook', function(request, response, next) {
+    app.post('/test-webhook', function (request, response, next) {
         console.log("Test Webhook (application/json only)")
         console.log("Content-Type: " + request.header("Content-Type"))
         console.log(request.body)
         response.end();
     });
 
-    app.get('*', function(request, response, next) {
+    app.get('*', function (request, response, next) {
         response.sendFile(process.cwd() + '/dist/index.html');
     });
 
@@ -194,7 +194,7 @@ let needSetup = false;
             try {
                 checkLogin(socket)
 
-                let bean = await R.findOne("monitor", " id = ? ", [ monitor.id ])
+                let bean = await R.findOne("monitor", " id = ? ", [monitor.id])
 
                 if (bean.user_id !== socket.userID) {
                     throw new Error("Permission denied.")
@@ -332,7 +332,7 @@ let needSetup = false;
             try {
                 checkLogin(socket)
 
-                if (! password.currentPassword) {
+                if (!password.currentPassword) {
                     throw new Error("Invalid new password")
                 }
 
@@ -471,7 +471,7 @@ async function checkOwner(userID, monitorID) {
         userID,
     ])
 
-    if (! row) {
+    if (!row) {
         throw new Error("You do not own this monitor.");
     }
 }
@@ -526,7 +526,7 @@ async function getMonitorJSONList(userID) {
 }
 
 function checkLogin(socket) {
-    if (! socket.userID) {
+    if (!socket.userID) {
         throw new Error("You are not logged in.");
     }
 }
@@ -534,7 +534,7 @@ function checkLogin(socket) {
 async function initDatabase() {
     const path = './data/kuma.db';
 
-    if (! fs.existsSync(path)) {
+    if (!fs.existsSync(path)) {
         console.log("Copy Database")
         fs.copyFileSync("./db/kuma.db", path);
     }
@@ -551,7 +551,7 @@ async function initDatabase() {
         "jwtSecret"
     ]);
 
-    if (! jwtSecretBean) {
+    if (!jwtSecretBean) {
         console.log("JWT secret is not found, generate one.")
         jwtSecretBean = R.dispense("setting")
         jwtSecretBean.key = "jwtSecret"
@@ -638,7 +638,7 @@ async function sendHeartbeatList(socket, monitorID) {
     let result = [];
 
     for (let bean of list) {
-       result.unshift(bean.toJSON())
+        result.unshift(bean.toJSON())
     }
 
     socket.emit("heartbeatList", monitorID, result)