Error in event handler: ReferenceError: window is not defined chrome extension with manifest v3

Question

I am using manifest version 3 for chrome extension this error I face in background js : Error in event handler: ReferenceError: window is not defined chrome extension with manifest v3

"manifest_version":3, "permissions":["contextMenus","storage", "activeTab","tabs","scripting","webRequest"],

var posLeft = ( window.width - winWidth ) / 2 ;

Answer 1

ManifestV3 extension uses a service worker so it doesn't have DOM or window.

• Use chrome.windows.getCurrent to get the size/position of the current browser window.
• Use chrome.system.display.getInfo (since Chrome 94) to get the display's size/metrics.