Convert frameName/features to strings in render process

diff --git a/lib/renderer/window-setup.js b/lib/renderer/window-setup.js
index d29133c..0bd43fb 100644 (file)
--- a/lib/renderer/window-setup.js
+++ b/lib/renderer/window-setup.js
@@ -32,6 +32,10 @@ const resolveURL = function (url) {
   return a.href
 }
 
+const toString = (value) => {
+  return value != null ? `${value}` : value
+}
+
 const windowProxies = {}
 
 const getOrCreateProxy = (ipcRenderer, guestId) => {
@@ -112,7 +116,7 @@ module.exports = (ipcRenderer, guestInstanceId, openerId, hiddenPage) => {
     if (url != null && url !== '') {
       url = resolveURL(url)
     }
-    const guestId = ipcRenderer.sendSync('ELECTRON_GUEST_WINDOW_MANAGER_WINDOW_OPEN', url, frameName, features)
+    const guestId = ipcRenderer.sendSync('ELECTRON_GUEST_WINDOW_MANAGER_WINDOW_OPEN', url, toString(frameName), toString(features))
     if (guestId != null) {
       return getOrCreateProxy(ipcRenderer, guestId)
     } else {
@@ -121,11 +125,11 @@ module.exports = (ipcRenderer, guestInstanceId, openerId, hiddenPage) => {
   }
 
   window.alert = function (message, title) {
-    ipcRenderer.sendSync('ELECTRON_BROWSER_WINDOW_ALERT', `${message}`, `${title}`)
+    ipcRenderer.sendSync('ELECTRON_BROWSER_WINDOW_ALERT', toString(message), toString(title))
   }
 
   window.confirm = function (message, title) {
-    return ipcRenderer.sendSync('ELECTRON_BROWSER_WINDOW_CONFIRM', `${message}`, `${title}`)
+    return ipcRenderer.sendSync('ELECTRON_BROWSER_WINDOW_CONFIRM', toString(message), toString(title))
   }
 
   // But we do not support prompt().