diff --git a/script/lib/copy-assets.js b/script/lib/copy-assets.js
index 2ddcbe937..3c33ad13a 100644
--- a/script/lib/copy-assets.js
+++ b/script/lib/copy-assets.js
@@ -4,7 +4,7 @@
 'use strict'
 
 const path = require('path')
-const copySync = require('./copy-sync')
+const fs = require('fs-extra')
 const CONFIG = require('../config')
 const glob = require('glob')
 const includePathInPackagedApp = require('./include-path-in-packaged-app')
@@ -22,10 +22,10 @@ module.exports = function () {
   ]
   srcPaths = srcPaths.concat(glob.sync(path.join(CONFIG.repositoryRootPath, 'spec', '*.*'), {ignore: path.join('**', '*-spec.*')}))
   for (let srcPath of srcPaths) {
-    copySync(srcPath, computeDestinationPath(srcPath), {filter: includePathInPackagedApp})
+    fs.copySync(srcPath, computeDestinationPath(srcPath), {filter: includePathInPackagedApp})
   }
 
-  copySync(
+  fs.copySync(
     path.join(CONFIG.repositoryRootPath, 'resources', 'app-icons', CONFIG.channel, 'png', '1024.png'),
     path.join(CONFIG.intermediateAppPath, 'resources', 'atom.png')
   )
diff --git a/script/lib/copy-sync.js b/script/lib/copy-sync.js
deleted file mode 100644
index 717d115ec..000000000
--- a/script/lib/copy-sync.js
+++ /dev/null
@@ -1,54 +0,0 @@
-'use strict'
-
-const fs = require('fs-extra')
-const path = require('path')
-
-module.exports = copySync
-
-function copySync(src, dest, opts) {
-  const options = Object.assign({filter: () => true}, opts || {})
-  const stat = fs.lstatSync(src)
-  if (options.filter(src)) {
-    if (stat.isFile()) {
-      const destDirPath = path.dirname(dest)
-      if (!fs.existsSync(destDirPath)) {
-        fs.mkdirpSync(destDirPath)
-      }
-      copyFileSync(src, dest, options)
-    } else if (stat.isDirectory()) {
-      if (!fs.existsSync(dest)) {
-        fs.mkdirpSync(dest)
-      }
-      fs.readdirSync(src).forEach(content => {
-        copySync(path.join(src, content), path.join(dest, content), options)
-      })
-    } else if (stat.isSymbolicLink()) {
-      fs.symlinkSync(fs.readlinkSync(src), dest)
-    }
-  }
-}
-
-const BUF_LENGTH = 4096
-const _buff = new Buffer(BUF_LENGTH)
-
-function copyFileSync(srcFile, destFile) {
-  if (fs.existsSync(destFile)) {
-    fs.chmodSync(destFile, parseInt('777', 8))
-    fs.unlinkSync(destFile)
-  }
-
-  const fileRead = fs.openSync(srcFile, 'r')
-  const stat = fs.fstatSync(fileRead)
-  const fileWrite = fs.openSync(destFile, 'w', stat.mode)
-  let bytesRead = 1
-  let pos = 0
-
-  while (bytesRead > 0) {
-    bytesRead = fs.readSync(fileRead, _buff, 0, BUF_LENGTH, pos)
-    fs.writeSync(fileWrite, _buff, 0, bytesRead)
-    pos += bytesRead
-  }
-
-  fs.closeSync(fileRead)
-  fs.closeSync(fileWrite)
-}
diff --git a/script/lib/create-debian-package.js b/script/lib/create-debian-package.js
index 0577f0f2f..75cda3c2b 100644
--- a/script/lib/create-debian-package.js
+++ b/script/lib/create-debian-package.js
@@ -1,6 +1,5 @@
 'use strict'
 
-const copySync = require('./copy-sync')
 const fs = require('fs-extra')
 const os = require('os')
 const path = require('path')
@@ -62,11 +61,11 @@ module.exports = function (packagedAppPath) {
   fs.mkdirpSync(debianPackageBinDirPath)
 
   console.log(`Copying "${packagedAppPath}" to "${debianPackageAtomDirPath}"`)
-  copySync(packagedAppPath, debianPackageAtomDirPath)
+  fs.copySync(packagedAppPath, debianPackageAtomDirPath)
   fs.chmodSync(debianPackageAtomDirPath, '755')
 
   console.log(`Copying binaries into "${debianPackageBinDirPath}"`)
-  copySync(path.join(CONFIG.repositoryRootPath, 'atom.sh'), path.join(debianPackageBinDirPath, atomExecutableName))
+  fs.copySync(path.join(CONFIG.repositoryRootPath, 'atom.sh'), path.join(debianPackageBinDirPath, atomExecutableName))
   fs.symlinkSync(
     path.join('..', 'share', atomExecutableName, 'resources', 'app', 'apm', 'node_modules', '.bin', 'apm'),
     path.join(debianPackageBinDirPath, apmExecutableName)
@@ -90,19 +89,19 @@ module.exports = function (packagedAppPath) {
   fs.writeFileSync(path.join(debianPackageApplicationsDirPath, `${atomExecutableName}.desktop`), desktopEntryContents)
 
   console.log(`Copying icon into "${debianPackageIconsDirPath}"`)
-  copySync(
+  fs.copySync(
     path.join(packagedAppPath, 'resources', 'app.asar.unpacked', 'resources', 'atom.png'),
     path.join(debianPackageIconsDirPath, `${atomExecutableName}.png`)
   )
 
   console.log(`Copying license into "${debianPackageDocsDirPath}"`)
-  copySync(
+  fs.copySync(
     path.join(packagedAppPath, 'resources', 'LICENSE.md'),
     path.join(debianPackageDocsDirPath, 'copyright')
   )
 
   console.log(`Copying lintian overrides into "${debianPackageLintianOverridesDirPath}"`)
-  copySync(
+  fs.copySync(
     path.join(CONFIG.repositoryRootPath, 'resources', 'linux', 'debian', 'lintian-overrides'),
     path.join(debianPackageLintianOverridesDirPath, atomExecutableName)
   )
@@ -111,5 +110,5 @@ module.exports = function (packagedAppPath) {
   spawnSync('fakeroot', ['dpkg-deb', '-b', debianPackageDirPath], {stdio: 'inherit'})
 
   console.log(`Copying generated package into "${outputDebianPackageFilePath}"`)
-  copySync(`${debianPackageDirPath}.deb`, outputDebianPackageFilePath)
+  fs.copySync(`${debianPackageDirPath}.deb`, outputDebianPackageFilePath)
 }
diff --git a/script/lib/create-rpm-package.js b/script/lib/create-rpm-package.js
index e173db665..5698f54a0 100644
--- a/script/lib/create-rpm-package.js
+++ b/script/lib/create-rpm-package.js
@@ -1,7 +1,6 @@
 'use strict'
 
 const assert = require('assert')
-const copySync = require('./copy-sync')
 const fs = require('fs-extra')
 const os = require('os')
 const path = require('path')
@@ -48,10 +47,10 @@ module.exports = function (packagedAppPath) {
   fs.mkdirpSync(rpmPackageSpecsDirPath)
 
   console.log(`Copying "${packagedAppPath}" to "${rpmPackageApplicationDirPath}"`)
-  copySync(packagedAppPath, rpmPackageApplicationDirPath)
+  fs.copySync(packagedAppPath, rpmPackageApplicationDirPath)
 
   console.log(`Copying icons into "${rpmPackageIconsDirPath}"`)
-  copySync(
+  fs.copySync(
     path.join(CONFIG.repositoryRootPath, 'resources', 'app-icons', CONFIG.channel, 'png'),
     rpmPackageIconsDirPath
   )
@@ -74,7 +73,7 @@ module.exports = function (packagedAppPath) {
   fs.writeFileSync(path.join(rpmPackageBuildDirPath, `${atomExecutableName}.desktop`), desktopEntryContents)
 
   console.log(`Copying atom.sh into "${rpmPackageBuildDirPath}"`)
-  copySync(
+  fs.copySync(
     path.join(CONFIG.repositoryRootPath, 'atom.sh'),
     path.join(rpmPackageBuildDirPath, 'atom.sh')
   )
@@ -88,6 +87,6 @@ module.exports = function (packagedAppPath) {
     const generatedPackageFilePath = path.join(generatedArchDirPath, generatedPackageFileNames[0])
     const outputRpmPackageFilePath = path.join(CONFIG.buildOutputPath, `atom.${generatedArch}.rpm`)
     console.log(`Copying "${generatedPackageFilePath}" into "${outputRpmPackageFilePath}"`)
-    copySync(generatedPackageFilePath, outputRpmPackageFilePath)
+    fs.copySync(generatedPackageFilePath, outputRpmPackageFilePath)
   }
 }
diff --git a/script/lib/install-application.js b/script/lib/install-application.js
index bc6654050..5852e6604 100644
--- a/script/lib/install-application.js
+++ b/script/lib/install-application.js
@@ -1,6 +1,5 @@
 'use strict'
 
-const copySync = require('./copy-sync')
 const fs = require('fs-extra')
 const path = require('path')
 
@@ -13,7 +12,7 @@ module.exports = function (packagedAppPath) {
       fs.removeSync(installationDirPath)
     }
     console.log(`Installing ${packagedAppPath} at ${installationDirPath}`)
-    copySync(packagedAppPath, installationDirPath)
+    fs.copySync(packagedAppPath, installationDirPath)
   } else {
     throw new Error("Not implemented yet.")
   }
diff --git a/script/lib/package-application.js b/script/lib/package-application.js
index 78870939d..5c76da9c0 100644
--- a/script/lib/package-application.js
+++ b/script/lib/package-application.js
@@ -2,7 +2,6 @@
 
 const assert = require('assert')
 const childProcess = require('child_process')
-const copySync = require('./copy-sync')
 const electronPackager = require('electron-packager')
 const fs = require('fs-extra')
 const includePathInPackagedApp = require('./include-path-in-packaged-app')
@@ -58,7 +57,7 @@ module.exports = function () {
 
 function copyNonASARResources (packagedAppPath, bundledResourcesPath) {
   console.log(`Copying non-ASAR resources to ${bundledResourcesPath}`)
-  copySync(
+  fs.copySync(
     path.join(CONFIG.repositoryRootPath, 'apm', 'node_modules', 'atom-package-manager'),
     path.join(bundledResourcesPath, 'app', 'apm'),
     {filter: includePathInPackagedApp}
@@ -67,18 +66,18 @@ function copyNonASARResources (packagedAppPath, bundledResourcesPath) {
     // Existing symlinks on user systems point to an outdated path, so just symlink it to the real location of the apm binary.
     // TODO: Change command installer to point to appropriate path and remove this fallback after a few releases.
     fs.symlinkSync(path.join('..', '..', 'bin', 'apm'), path.join(bundledResourcesPath, 'app', 'apm', 'node_modules', '.bin', 'apm'))
-    copySync(path.join(CONFIG.repositoryRootPath, 'atom.sh'), path.join(bundledResourcesPath, 'app', 'atom.sh'))
+    fs.copySync(path.join(CONFIG.repositoryRootPath, 'atom.sh'), path.join(bundledResourcesPath, 'app', 'atom.sh'))
   }
   if (process.platform === 'darwin') {
-    copySync(path.join(CONFIG.repositoryRootPath, 'resources', 'mac', 'file.icns'), path.join(bundledResourcesPath, 'file.icns'))
+    fs.copySync(path.join(CONFIG.repositoryRootPath, 'resources', 'mac', 'file.icns'), path.join(bundledResourcesPath, 'file.icns'))
   } else if (process.platform === 'linux') {
-    copySync(path.join(CONFIG.repositoryRootPath, 'resources', 'app-icons', CONFIG.channel, 'png', '1024.png'), path.join(packagedAppPath, 'atom.png'))
+    fs.copySync(path.join(CONFIG.repositoryRootPath, 'resources', 'app-icons', CONFIG.channel, 'png', '1024.png'), path.join(packagedAppPath, 'atom.png'))
   } else if (process.platform === 'win32') {
-    copySync(path.join('resources', 'win', 'atom.cmd'), path.join(bundledResourcesPath, 'cli', 'atom.cmd'))
-    copySync(path.join('resources', 'win', 'atom.sh'), path.join(bundledResourcesPath, 'cli', 'atom.sh'))
-    copySync(path.join('resources', 'win', 'atom.js'), path.join(bundledResourcesPath, 'cli', 'atom.js'))
-    copySync(path.join('resources', 'win', 'apm.cmd'), path.join(bundledResourcesPath, 'cli', 'apm.cmd'))
-    copySync(path.join('resources', 'win', 'apm.sh'), path.join(bundledResourcesPath, 'cli', 'apm.sh'))
+    fs.copySync(path.join('resources', 'win', 'atom.cmd'), path.join(bundledResourcesPath, 'cli', 'atom.cmd'))
+    fs.copySync(path.join('resources', 'win', 'atom.sh'), path.join(bundledResourcesPath, 'cli', 'atom.sh'))
+    fs.copySync(path.join('resources', 'win', 'atom.js'), path.join(bundledResourcesPath, 'cli', 'atom.js'))
+    fs.copySync(path.join('resources', 'win', 'apm.cmd'), path.join(bundledResourcesPath, 'cli', 'apm.cmd'))
+    fs.copySync(path.join('resources', 'win', 'apm.sh'), path.join(bundledResourcesPath, 'cli', 'apm.sh'))
   }
 
   console.log(`Writing LICENSE.md to ${bundledResourcesPath}`)