diff --git a/.eslintrc b/.eslintrc
index f4f88ad0b..ac065a8b9 100644
--- a/.eslintrc
+++ b/.eslintrc
@@ -1,6 +1,10 @@
 {
   "extends": ["standard", "standard-jsx"],
   "rules": {
-    "no-useless-escape": 0
+    "no-useless-escape": 0,
+    "prefer-const": "warn",
+    "no-unused-vars": "warn",
+    "no-undef": "warn",
+    "no-lone-blocks": "warn"
   }
 }
diff --git a/browser/components/CodeEditor.js b/browser/components/CodeEditor.js
index a20807c0d..68157530b 100644
--- a/browser/components/CodeEditor.js
+++ b/browser/components/CodeEditor.js
@@ -86,7 +86,7 @@ export default class CodeEditor extends React.Component {
         Enter: (cm) => {
           const cursor = cm.getCursor()
           const line = cm.getLine(cursor.line)
-          let bulletType;
+          let bulletType
           if (line.trim().startsWith('- ')) {
             bulletType = 1 // dash
           } else if (line.trim().startsWith('* ')) {
diff --git a/browser/components/MarkdownEditor.js b/browser/components/MarkdownEditor.js
index 9bb50a87e..f2d59c855 100644
--- a/browser/components/MarkdownEditor.js
+++ b/browser/components/MarkdownEditor.js
@@ -161,7 +161,7 @@ class MarkdownEditor extends React.Component {
     this.renderPreview(this.props.value)
   }
 
-  handleKeyDown(e) {
+  handleKeyDown (e) {
     if (this.state.status !== 'CODE') return false
     const keyPressed = Object.assign(this.state.keyPressed, {
       [e.key]: true
@@ -183,7 +183,7 @@ class MarkdownEditor extends React.Component {
     const currentCaret = this.refs.code.editor.getCursor()
     const cmDoc = this.refs.code.editor.getDoc()
     cmDoc.replaceRange(mdElement, currentCaret)
-    this.refs.code.editor.setCursor({line: currentCaret.line, ch: currentCaret.ch + mdElement.length/2})
+    this.refs.code.editor.setCursor({ line: currentCaret.line, ch: currentCaret.ch + mdElement.length / 2 })
   }
 
   addMdBetweenWord (mdElement) {
diff --git a/browser/components/MarkdownPreview.js b/browser/components/MarkdownPreview.js
index 1802139ee..460920d82 100644
--- a/browser/components/MarkdownPreview.js
+++ b/browser/components/MarkdownPreview.js
@@ -152,7 +152,7 @@ export default class MarkdownPreview extends React.Component {
   exportAsDocument (fileType) {
     const options = {
       filters: [
-        { name: 'Documents', extensions: [fileType]}
+        { name: 'Documents', extensions: [fileType] }
       ],
       properties: ['openFile', 'createDirectory']
     }
@@ -333,7 +333,7 @@ export default class MarkdownPreview extends React.Component {
     }
   }
 
-  preventImageDroppedHandler(e) {
+  preventImageDroppedHandler (e) {
     e.preventDefault()
     e.stopPropagation()
   }
diff --git a/browser/finder/index.js b/browser/finder/index.js
index 1120fc8e5..6c2b29d4f 100644
--- a/browser/finder/index.js
+++ b/browser/finder/index.js
@@ -68,7 +68,7 @@ class FinderMain extends React.Component {
 
   handleWindowBlur (e) {
     this.setState({
-      search: '',
+      search: ''
     })
   }
 
diff --git a/browser/main/Detail/MarkdownNoteDetail.js b/browser/main/Detail/MarkdownNoteDetail.js
index 3f4a7a4d7..4c0585f93 100644
--- a/browser/main/Detail/MarkdownNoteDetail.js
+++ b/browser/main/Detail/MarkdownNoteDetail.js
@@ -275,15 +275,15 @@ class MarkdownNoteDetail extends React.Component {
           </div>
           <div styleName='info-right'>
             {(() => {
-              const faClassName=`fa ${this.getToggleLockButton()}`
+              const faClassName = `fa ${this.getToggleLockButton()}`
               const lockButtonComponent =
                 <button styleName='control-lockButton'
                   onFocus={(e) => this.handleFocus(e)}
                   onMouseDown={(e) => this.handleLockButtonMouseDown(e)}
                 >
-                  <i className={faClassName} styleName='lock-button'/>
+                  <i className={faClassName} styleName='lock-button' />
                   <span styleName='control-lockButton-tooltip'>
-                  {this.state.isLocked ? 'Unlock' : 'Lock'}
+                    {this.state.isLocked ? 'Unlock' : 'Lock'}
                   </span>
                 </button>
               return (
@@ -293,15 +293,15 @@ class MarkdownNoteDetail extends React.Component {
             <button styleName='control-trashButton'
               onClick={(e) => this.handleContextButtonClick(e)}
             >
-              <svg height="17px" id="Capa_1" style={{"enableBackground":"new 0 0 753.23 753.23"}} width="17px" version="1.1" viewBox="0 0 753.23 753.23" x="0px" y="0px" xmlSpace="preserve">
-                 <g>
-                   <g id="_x34__19_">
-                     <g>
-                       <path d="M494.308,659.077c12.993,0,23.538-10.546,23.538-23.539V353.077c0-12.993-10.545-23.539-23.538-23.539&#xA;&#x9;&#x9;&#x9;&#x9;s-23.538,10.545-23.538,23.539v282.461C470.77,648.531,481.314,659.077,494.308,659.077z M635.538,94.154h-141.23V47.077&#xA;&#x9;&#x9;&#x9;&#x9;C494.308,21.067,473.24,0,447.23,0H306c-26.01,0-47.077,21.067-47.077,47.077v47.077h-141.23&#xA;&#x9;&#x9;&#x9;&#x9;c-26.01,0-47.077,21.067-47.077,47.077v47.077c0,25.986,21.067,47.077,47.077,47.077v423.692&#xA;&#x9;&#x9;&#x9;&#x9;c0,51.996,42.157,94.153,94.154,94.153h329.539c51.996,0,94.153-42.157,94.153-94.153V235.385&#xA;&#x9;&#x9;&#x9;&#x9;c26.01,0,47.077-21.091,47.077-47.077V141.23C682.615,115.221,661.548,94.154,635.538,94.154z M306,70.615&#xA;&#x9;&#x9;&#x9;&#x9;c0-12.993,10.545-23.539,23.538-23.539h94.154c12.993,0,23.538,10.545,23.538,23.539v23.539c-22.809,0-141.23,0-141.23,0V70.615z&#xA;&#x9;&#x9;&#x9;&#x9; M588.461,659.077c0,25.986-21.066,47.076-47.076,47.076H211.846c-26.01,0-47.077-21.09-47.077-47.076V235.385h423.692V659.077z&#xA;&#x9;&#x9;&#x9;&#x9; M612,188.308H141.23c-12.993,0-23.538-10.545-23.538-23.539s10.545-23.539,23.538-23.539H612&#xA;&#x9;&#x9;&#x9;&#x9;c12.993,0,23.538,10.545,23.538,23.539S624.993,188.308,612,188.308z M258.923,659.077c12.993,0,23.539-10.546,23.539-23.539&#xA;&#x9;&#x9;&#x9;&#x9;V353.077c0-12.993-10.545-23.539-23.539-23.539s-23.539,10.545-23.539,23.539v282.461&#xA;&#x9;&#x9;&#x9;&#x9;C235.384,648.531,245.93,659.077,258.923,659.077z M376.615,659.077c12.993,0,23.538-10.546,23.538-23.539V353.077&#xA;&#x9;&#x9;&#x9;&#x9;c0-12.993-10.545-23.539-23.538-23.539s-23.539,10.545-23.539,23.539v282.461C353.077,648.531,363.622,659.077,376.615,659.077z"/>
-                     </g>
-                   </g>
-                 </g>
-               </svg>
+              <svg height='17px' id='Capa_1' style={{enableBackground: 'new 0 0 753.23 753.23'}} width='17px' version='1.1' viewBox='0 0 753.23 753.23' x='0px' y='0px' xmlSpace='preserve'>
+                <g>
+                  <g id='_x34__19_'>
+                    <g>
+                      <path d='M494.308,659.077c12.993,0,23.538-10.546,23.538-23.539V353.077c0-12.993-10.545-23.539-23.538-23.539&#xA;&#x9;&#x9;&#x9;&#x9;s-23.538,10.545-23.538,23.539v282.461C470.77,648.531,481.314,659.077,494.308,659.077z M635.538,94.154h-141.23V47.077&#xA;&#x9;&#x9;&#x9;&#x9;C494.308,21.067,473.24,0,447.23,0H306c-26.01,0-47.077,21.067-47.077,47.077v47.077h-141.23&#xA;&#x9;&#x9;&#x9;&#x9;c-26.01,0-47.077,21.067-47.077,47.077v47.077c0,25.986,21.067,47.077,47.077,47.077v423.692&#xA;&#x9;&#x9;&#x9;&#x9;c0,51.996,42.157,94.153,94.154,94.153h329.539c51.996,0,94.153-42.157,94.153-94.153V235.385&#xA;&#x9;&#x9;&#x9;&#x9;c26.01,0,47.077-21.091,47.077-47.077V141.23C682.615,115.221,661.548,94.154,635.538,94.154z M306,70.615&#xA;&#x9;&#x9;&#x9;&#x9;c0-12.993,10.545-23.539,23.538-23.539h94.154c12.993,0,23.538,10.545,23.538,23.539v23.539c-22.809,0-141.23,0-141.23,0V70.615z&#xA;&#x9;&#x9;&#x9;&#x9; M588.461,659.077c0,25.986-21.066,47.076-47.076,47.076H211.846c-26.01,0-47.077-21.09-47.077-47.076V235.385h423.692V659.077z&#xA;&#x9;&#x9;&#x9;&#x9; M612,188.308H141.23c-12.993,0-23.538-10.545-23.538-23.539s10.545-23.539,23.538-23.539H612&#xA;&#x9;&#x9;&#x9;&#x9;c12.993,0,23.538,10.545,23.538,23.539S624.993,188.308,612,188.308z M258.923,659.077c12.993,0,23.539-10.546,23.539-23.539&#xA;&#x9;&#x9;&#x9;&#x9;V353.077c0-12.993-10.545-23.539-23.539-23.539s-23.539,10.545-23.539,23.539v282.461&#xA;&#x9;&#x9;&#x9;&#x9;C235.384,648.531,245.93,659.077,258.923,659.077z M376.615,659.077c12.993,0,23.538-10.546,23.538-23.539V353.077&#xA;&#x9;&#x9;&#x9;&#x9;c0-12.993-10.545-23.539-23.538-23.539s-23.539,10.545-23.539,23.539v282.461C353.077,648.531,363.622,659.077,376.615,659.077z' />
+                    </g>
+                  </g>
+                </g>
+              </svg>
             </button>
           </div>
         </div>
diff --git a/browser/main/Detail/SnippetNoteDetail.js b/browser/main/Detail/SnippetNoteDetail.js
index 953c2e11c..66c0b6730 100644
--- a/browser/main/Detail/SnippetNoteDetail.js
+++ b/browser/main/Detail/SnippetNoteDetail.js
@@ -550,11 +550,11 @@ class SnippetNoteDetail extends React.Component {
             <button styleName='control-trashButton'
               onClick={(e) => this.handleContextButtonClick(e)}
             >
-              <svg height="17px" id="Capa_1" style={{"enableBackground":"new 0 0 753.23 753.23"}} width="17px" version="1.1" viewBox="0 0 753.23 753.23" x="0px" y="0px" xmlSpace="preserve">
+              <svg height='17px' id='Capa_1' style={{enableBackground: 'new 0 0 753.23 753.23'}} width='17px' version='1.1' viewBox='0 0 753.23 753.23' x='0px' y='0px' xmlSpace='preserve'>
                 <g>
-                  <g id="_x34__19_">
+                  <g id='_x34__19_'>
                     <g>
-                      <path d="M494.308,659.077c12.993,0,23.538-10.546,23.538-23.539V353.077c0-12.993-10.545-23.539-23.538-23.539&#xA;&#x9;&#x9;&#x9;&#x9;s-23.538,10.545-23.538,23.539v282.461C470.77,648.531,481.314,659.077,494.308,659.077z M635.538,94.154h-141.23V47.077&#xA;&#x9;&#x9;&#x9;&#x9;C494.308,21.067,473.24,0,447.23,0H306c-26.01,0-47.077,21.067-47.077,47.077v47.077h-141.23&#xA;&#x9;&#x9;&#x9;&#x9;c-26.01,0-47.077,21.067-47.077,47.077v47.077c0,25.986,21.067,47.077,47.077,47.077v423.692&#xA;&#x9;&#x9;&#x9;&#x9;c0,51.996,42.157,94.153,94.154,94.153h329.539c51.996,0,94.153-42.157,94.153-94.153V235.385&#xA;&#x9;&#x9;&#x9;&#x9;c26.01,0,47.077-21.091,47.077-47.077V141.23C682.615,115.221,661.548,94.154,635.538,94.154z M306,70.615&#xA;&#x9;&#x9;&#x9;&#x9;c0-12.993,10.545-23.539,23.538-23.539h94.154c12.993,0,23.538,10.545,23.538,23.539v23.539c-22.809,0-141.23,0-141.23,0V70.615z&#xA;&#x9;&#x9;&#x9;&#x9; M588.461,659.077c0,25.986-21.066,47.076-47.076,47.076H211.846c-26.01,0-47.077-21.09-47.077-47.076V235.385h423.692V659.077z&#xA;&#x9;&#x9;&#x9;&#x9; M612,188.308H141.23c-12.993,0-23.538-10.545-23.538-23.539s10.545-23.539,23.538-23.539H612&#xA;&#x9;&#x9;&#x9;&#x9;c12.993,0,23.538,10.545,23.538,23.539S624.993,188.308,612,188.308z M258.923,659.077c12.993,0,23.539-10.546,23.539-23.539&#xA;&#x9;&#x9;&#x9;&#x9;V353.077c0-12.993-10.545-23.539-23.539-23.539s-23.539,10.545-23.539,23.539v282.461&#xA;&#x9;&#x9;&#x9;&#x9;C235.384,648.531,245.93,659.077,258.923,659.077z M376.615,659.077c12.993,0,23.538-10.546,23.538-23.539V353.077&#xA;&#x9;&#x9;&#x9;&#x9;c0-12.993-10.545-23.539-23.538-23.539s-23.539,10.545-23.539,23.539v282.461C353.077,648.531,363.622,659.077,376.615,659.077z"/>
+                      <path d='M494.308,659.077c12.993,0,23.538-10.546,23.538-23.539V353.077c0-12.993-10.545-23.539-23.538-23.539&#xA;&#x9;&#x9;&#x9;&#x9;s-23.538,10.545-23.538,23.539v282.461C470.77,648.531,481.314,659.077,494.308,659.077z M635.538,94.154h-141.23V47.077&#xA;&#x9;&#x9;&#x9;&#x9;C494.308,21.067,473.24,0,447.23,0H306c-26.01,0-47.077,21.067-47.077,47.077v47.077h-141.23&#xA;&#x9;&#x9;&#x9;&#x9;c-26.01,0-47.077,21.067-47.077,47.077v47.077c0,25.986,21.067,47.077,47.077,47.077v423.692&#xA;&#x9;&#x9;&#x9;&#x9;c0,51.996,42.157,94.153,94.154,94.153h329.539c51.996,0,94.153-42.157,94.153-94.153V235.385&#xA;&#x9;&#x9;&#x9;&#x9;c26.01,0,47.077-21.091,47.077-47.077V141.23C682.615,115.221,661.548,94.154,635.538,94.154z M306,70.615&#xA;&#x9;&#x9;&#x9;&#x9;c0-12.993,10.545-23.539,23.538-23.539h94.154c12.993,0,23.538,10.545,23.538,23.539v23.539c-22.809,0-141.23,0-141.23,0V70.615z&#xA;&#x9;&#x9;&#x9;&#x9; M588.461,659.077c0,25.986-21.066,47.076-47.076,47.076H211.846c-26.01,0-47.077-21.09-47.077-47.076V235.385h423.692V659.077z&#xA;&#x9;&#x9;&#x9;&#x9; M612,188.308H141.23c-12.993,0-23.538-10.545-23.538-23.539s10.545-23.539,23.538-23.539H612&#xA;&#x9;&#x9;&#x9;&#x9;c12.993,0,23.538,10.545,23.538,23.539S624.993,188.308,612,188.308z M258.923,659.077c12.993,0,23.539-10.546,23.539-23.539&#xA;&#x9;&#x9;&#x9;&#x9;V353.077c0-12.993-10.545-23.539-23.539-23.539s-23.539,10.545-23.539,23.539v282.461&#xA;&#x9;&#x9;&#x9;&#x9;C235.384,648.531,245.93,659.077,258.923,659.077z M376.615,659.077c12.993,0,23.538-10.546,23.538-23.539V353.077&#xA;&#x9;&#x9;&#x9;&#x9;c0-12.993-10.545-23.539-23.538-23.539s-23.539,10.545-23.539,23.539v282.461C353.077,648.531,363.622,659.077,376.615,659.077z' />
                     </g>
                   </g>
                 </g>
diff --git a/browser/main/NoteList/index.js b/browser/main/NoteList/index.js
index b3267d05e..c6d3464c0 100644
--- a/browser/main/NoteList/index.js
+++ b/browser/main/NoteList/index.js
@@ -318,7 +318,7 @@ class NoteList extends React.Component {
     })
   }
 
-  alertIfSnippet() {
+  alertIfSnippet () {
     let { location } = this.props
     const targetIndex = _.findIndex(this.notes, (note) => {
       return `${note.storage}-${note.key}` === location.query.key
@@ -332,7 +332,7 @@ class NoteList extends React.Component {
     }
   }
 
-  jumpToTop() {
+  jumpToTop () {
     if (this.notes === null || this.notes.length === 0) {
       return
     }
diff --git a/browser/main/lib/ConfigManager.js b/browser/main/lib/ConfigManager.js
index e398ecc9e..1f7ab33d7 100644
--- a/browser/main/lib/ConfigManager.js
+++ b/browser/main/lib/ConfigManager.js
@@ -16,7 +16,7 @@ export const DEFAULT_CONFIG = {
   listStyle: 'DEFAULT', // 'DEFAULT', 'SMALL'
   hotkey: {
     toggleFinder: OSX ? 'Cmd + Alt + S' : 'Super + Alt + S',
-    toggleMain: OSX ? 'Cmd + Alt + L' : 'Super + Alt + E',
+    toggleMain: OSX ? 'Cmd + Alt + L' : 'Super + Alt + E'
   },
   ui: {
     theme: 'default',
diff --git a/browser/main/modals/DeleteArticleModal.js b/browser/main/modals/DeleteArticleModal.js
index 91546dd11..5069cda08 100644
--- a/browser/main/modals/DeleteArticleModal.js
+++ b/browser/main/modals/DeleteArticleModal.js
@@ -1,6 +1,5 @@
 import React, { PropTypes } from 'react'
 import ReactDOM from 'react-dom'
-import store from '../store'
 
 const electron = require('electron')
 const ipc = electron.ipcRenderer
@@ -26,7 +25,6 @@ export default class DeleteArticleModal extends React.Component {
   }
 
   handleYesButtonClick (e) {
-    // store.dispatch(destroyArticle(this.props.articleKey))
     this.props.close()
   }
 
diff --git a/lib/main-window.js b/lib/main-window.js
index c62108f47..dfe64281a 100644
--- a/lib/main-window.js
+++ b/lib/main-window.js
@@ -6,9 +6,9 @@ const Config = require('electron-config')
 const config = new Config()
 
 var showMenu = process.platform !== 'win32'
-let windowSize = config.get('windowsize') || { width: 1080, height: 720 }
+const windowSize = config.get('windowsize') || { width: 1080, height: 720 }
 
-let mainWindow = new BrowserWindow({
+const mainWindow = new BrowserWindow({
   width: windowSize.width,
   height: windowSize.height,
   minWidth: 500,
diff --git a/package.json b/package.json
index f97ca39e9..667ffb8bb 100644
--- a/package.json
+++ b/package.json
@@ -11,7 +11,7 @@
     "compile": "grunt compile",
     "test": "PWD=$(pwd) NODE_ENV=test ava",
     "fix": "npm run lint --fix",
-    "lint": "eslint ./**/*.js"
+    "lint": "eslint ."
   },
   "config": {
     "electron-version": "1.2.8"