Context Isolation is a feature that ensures that both your preload scripts and Electron's internal logic run in a separate context to the website you load in a webContents. This is important for security purposes as it helps prevent the website from accessing Electron internals or the powerful APIs your preload script has access to.| www.electronjs.org
Render and control web pages.| www.electronjs.org
The MessagePort interface of the Channel Messaging API represents one of the two ports of a MessageChannel, allowing messages to be sent from one port and listening out for them arriving at the other.| MDN Web Docs
Communicate asynchronously from a renderer process to the main process.| www.electronjs.org