diff --git a/client/dom/storage.js b/client/dom/storage.js
index c8d427cd..a2de5201 100644
--- a/client/dom/storage.js
+++ b/client/dom/storage.js
@@ -5,7 +5,7 @@ const tryCatch = require('try-catch');
 const {parse, stringify} = JSON;
 const isObj = (a) => typeof a === 'object';
 
-module.exports.set = async (name, data) => {
+module.exports.set = (name, data) => {
     const primitive = !isObj(data) ? data : stringify(data);
     
     localStorage.setItem(name, primitive);
@@ -18,11 +18,11 @@ module.exports.get = async (name) => {
     return result;
 };
 
-module.exports.clear = async () => {
+module.exports.clear = () => {
     localStorage.clear();
 };
 
-module.exports.remove = async(item) => {
+module.exports.remove = (item) => {
     localStorage.removeItem(item);
 };
 
diff --git a/client/key/vim/vim.js b/client/key/vim/vim.js
index 17ef9fa1..cee0293a 100644
--- a/client/key/vim/vim.js
+++ b/client/key/vim/vim.js
@@ -48,7 +48,11 @@ module.exports = (key, operations) => {
     }
     
     if (key === 'j') {
-        const {count, isDelete, isVisual} = handleDelete(prevStore);
+        const {
+            count,
+            isDelete,
+            isVisual,
+        } = handleDelete(prevStore);
         
         !isNaN(count) && moveNext({
             count,
@@ -60,7 +64,11 @@ module.exports = (key, operations) => {
     }
     
     if (key === 'k') {
-        const {count, isDelete, isVisual} = handleDelete(prevStore);
+        const {
+            count,
+            isDelete,
+            isVisual,
+        } = handleDelete(prevStore);
         
         !isNaN(count) && movePrevious({
             count,
@@ -72,7 +80,10 @@ module.exports = (key, operations) => {
     }
     
     if (/^gg$/.test(value)) {
-        const {count, isDelete, isVisual} = handleDelete(prevStore);
+        const {
+            isDelete,
+            isVisual,
+        } = handleDelete(prevStore);
         
         movePrevious({
             count: Infinity,
diff --git a/client/modules/view.js b/client/modules/view.js
index 0445fed5..e192dcf9 100644
--- a/client/modules/view.js
+++ b/client/modules/view.js
@@ -128,7 +128,7 @@ async function show(data, options) {
     }
 }
 
-async function viewPDF(src) {
+function viewPDF(src) {
     const element = createElement('iframe', {
         src,
         width: '100%',
diff --git a/server/config.js b/server/config.js
index c93e9a41..674afe3a 100644
--- a/server/config.js
+++ b/server/config.js
@@ -7,7 +7,6 @@ const DIR = DIR_SERVER + '../';
 const path = require('path');
 const fs = require('fs');
 const Emitter = require('events');
-const {promisify} = require('util');
 const {homedir} = require('os');
 
 const exit = require(DIR_SERVER + 'exit');