diff --git a/atom/browser/web_contents_preferences.cc b/atom/browser/web_contents_preferences.cc
index 93dd2be03eac7..79493be4d7c87 100644
--- a/atom/browser/web_contents_preferences.cc
+++ b/atom/browser/web_contents_preferences.cc
@@ -228,9 +228,8 @@ void WebContentsPreferences::AppendCommandLineSwitches(
         ::switches::kEnableExperimentalWebPlatformFeatures);
 
   // Check if we have node integration specified.
-  bool enable_node_integration = IsEnabled(options::kNodeIntegration, true);
-  command_line->AppendSwitchASCII(switches::kNodeIntegration,
-                                  enable_node_integration ? "true" : "false");
+  if (IsEnabled(options::kNodeIntegration))
+    command_line->AppendSwitch(switches::kNodeIntegration);
 
   // Whether to enable node integration in Worker.
   if (IsEnabled(options::kNodeIntegrationInWorker))
@@ -238,9 +237,8 @@ void WebContentsPreferences::AppendCommandLineSwitches(
 
   // Check if webview tag creation is enabled, default to nodeIntegration value.
   // TODO(kevinsawicki): Default to false in 2.0
-  bool webview_tag = IsEnabled(options::kWebviewTag, enable_node_integration);
-  command_line->AppendSwitchASCII(switches::kWebviewTag,
-                                  webview_tag ? "true" : "false");
+  if (IsEnabled(options::kWebviewTag))
+    command_line->AppendSwitch(switches::kWebviewTag);
 
   // If the `sandbox` option was passed to the BrowserWindow's webPreferences,
   // pass `--enable-sandbox` to the renderer so it won't have any node.js
diff --git a/atom/renderer/atom_renderer_client.h b/atom/renderer/atom_renderer_client.h
index 12a64e3c07cc0..9e9e89d503349 100644
--- a/atom/renderer/atom_renderer_client.h
+++ b/atom/renderer/atom_renderer_client.h
@@ -35,13 +35,6 @@ class AtomRendererClient : public RendererClientBase {
                                content::RenderFrame* render_frame) override;
 
  private:
-  enum NodeIntegration {
-    ALL,
-    EXCEPT_IFRAME,
-    MANUAL_ENABLE_IFRAME,
-    DISABLE,
-  };
-
   // content::ContentRendererClient:
   void RenderThreadStarted() override;
   void RenderFrameCreated(content::RenderFrame*) override;
diff --git a/filenames.gni b/filenames.gni
index 128480e6b386e..5524452b89d64 100644
--- a/filenames.gni
+++ b/filenames.gni
@@ -65,6 +65,7 @@ filenames = {
     "lib/common/web-view-methods.js",
     "lib/renderer/callbacks-registry.js",
     "lib/renderer/chrome-api.js",
+    "lib/renderer/command-line.js",
     "lib/renderer/content-scripts-injector.js",
     "lib/renderer/init.js",
     "lib/renderer/inspector.js",
diff --git a/lib/renderer/command-line.js b/lib/renderer/command-line.js
new file mode 100644
index 0000000000000..9b4d3f314d8e3
--- /dev/null
+++ b/lib/renderer/command-line.js
@@ -0,0 +1,14 @@
+'use strict'
+
+exports.hasSwitch = function (name) {
+  return process.argv.includes(`--${name}`)
+}
+
+exports.getSwitchValue = function (name, defaultValue, converter = value => value) {
+  for (const arg of process.argv) {
+    if (arg.indexOf(`--${name}=`) === 0) {
+      return converter(arg.substr(arg.indexOf('=') + 1))
+    }
+  }
+  return defaultValue
+}
diff --git a/lib/renderer/init.js b/lib/renderer/init.js
index af114785d13b4..80620406811dc 100644
--- a/lib/renderer/init.js
+++ b/lib/renderer/init.js
@@ -31,41 +31,20 @@ const ipcRenderer = require('@electron/internal/renderer/ipc-renderer-internal')
 require('@electron/internal/renderer/web-frame-init')()
 
 // Process command line arguments.
-let nodeIntegration = false
-let webviewTag = false
-let contextIsolation = false
-let preloadScript = null
-let preloadScripts = []
-let isBackgroundPage = false
-let appPath = null
-let guestInstanceId = null
-let openerId = null
-for (const arg of process.argv) {
-  if (arg.indexOf('--guest-instance-id=') === 0) {
-    // This is a guest web view.
-    guestInstanceId = parseInt(arg.substr(arg.indexOf('=') + 1))
-  } else if (arg.indexOf('--opener-id=') === 0) {
-    // This is a guest BrowserWindow.
-    openerId = parseInt(arg.substr(arg.indexOf('=') + 1))
-  } else if (arg.indexOf('--node-integration=') === 0) {
-    nodeIntegration = arg.substr(arg.indexOf('=') + 1) === 'true'
-  } else if (arg.indexOf('--preload=') === 0) {
-    preloadScript = arg.substr(arg.indexOf('=') + 1)
-  } else if (arg === '--background-page') {
-    isBackgroundPage = true
-  } else if (arg.indexOf('--app-path=') === 0) {
-    appPath = arg.substr(arg.indexOf('=') + 1)
-  } else if (arg.indexOf('--webview-tag=') === 0) {
-    webviewTag = arg.substr(arg.indexOf('=') + 1) === 'true'
-  } else if (arg === '--context-isolation') {
-    contextIsolation = true
-  } else if (arg.indexOf('--preload-scripts') === 0) {
-    preloadScripts = arg.substr(arg.indexOf('=') + 1).split(path.delimiter)
-  }
-}
+const { hasSwitch, getSwitchValue } = require('@electron/internal/renderer/command-line')
+
+const contextIsolation = hasSwitch('context-isolation')
+let nodeIntegration = hasSwitch('node-integration')
+const webviewTag = hasSwitch('webview-tag')
+const isHiddenPage = hasSwitch('hidden-page')
+const isBackgroundPage = hasSwitch('background-page')
+const usesNativeWindowOpen = hasSwitch('native-window-open')
 
-const hiddenPage = process.argv.includes('--hidden-page')
-const usesNativeWindowOpen = process.argv.includes('--native-window-open')
+const preloadScript = getSwitchValue('preload', null)
+const preloadScripts = getSwitchValue('preload-scripts', [], value => value.split(path.delimiter))
+const appPath = getSwitchValue('app-path', null)
+const guestInstanceId = getSwitchValue('guest-instance-id', null, value => parseInt(value))
+const openerId = getSwitchValue('opener-id', null, value => parseInt(value))
 
 // The webContents preload script is loaded after the session preload scripts.
 if (preloadScript) {
@@ -74,7 +53,7 @@ if (preloadScript) {
 
 // Pass the arguments to isolatedWorld.
 if (contextIsolation) {
-  const isolatedWorldArgs = { ipcRenderer, guestInstanceId, hiddenPage, openerId, usesNativeWindowOpen }
+  const isolatedWorldArgs = { ipcRenderer, guestInstanceId, isHiddenPage, openerId, usesNativeWindowOpen }
   v8Util.setHiddenValue(global, 'isolated-world-args', isolatedWorldArgs)
 }
 
@@ -91,7 +70,7 @@ if (window.location.protocol === 'chrome-devtools:') {
   nodeIntegration = false
 } else {
   // Override default web functions.
-  require('@electron/internal/renderer/window-setup')(ipcRenderer, guestInstanceId, openerId, hiddenPage, usesNativeWindowOpen)
+  require('@electron/internal/renderer/window-setup')(ipcRenderer, guestInstanceId, openerId, isHiddenPage, usesNativeWindowOpen)
 
   // Inject content scripts.
   require('@electron/internal/renderer/content-scripts-injector')