upgrade screen spec

spec/api-screen-spec.js

@@ -1,31 +1,29 @@
 const assert = require('assert')
-const screen = require('electron').screen
+const {screen} = require('electron')
 
-describe('screen module', function () {
-  describe('screen.getCursorScreenPoint()', function () {
-    it('returns a point object', function () {
-      var point = screen.getCursorScreenPoint()
+describe('screen module', () => {
+  describe('screen.getCursorScreenPoint()', () => {
+    it('returns a point object', () => {
+      const point = screen.getCursorScreenPoint()
       assert.equal(typeof point.x, 'number')
       assert.equal(typeof point.y, 'number')
     })
   })
 
-  describe('screen.getPrimaryDisplay()', function () {
-    it('returns a display object', function () {
-      var display = screen.getPrimaryDisplay()
+  describe('screen.getPrimaryDisplay()', () => {
+    it('returns a display object', () => {
+      const display = screen.getPrimaryDisplay()
       assert.equal(typeof display.scaleFactor, 'number')
       assert(display.size.width > 0)
       assert(display.size.height > 0)
     })
   })
 
-  describe('screen.getMenuBarHeight()', function () {
-    if (process.platform !== 'darwin') {
-      return
-    }
+  describe('screen.getMenuBarHeight()', () => {
+    if (process.platform !== 'darwin') return
 
-    it('returns an integer', function () {
-      var screenHeight = screen.getMenuBarHeight()
+    it('returns an integer', () => {
+      const screenHeight = screen.getMenuBarHeight()
       assert.equal(typeof screenHeight, 'number')
     })
   })