When you try to log a DOM object in a content script for a Firefox WebExtension, it will display "<unavailable>" as the

Working on developing a browser extension using the WebExtension API in FireFox. Currently, while writing a content script, I've encountered an issue where any DOM object passed into console.log results in the string <unavailable> being displayed instead of the actual object. See below:

$ console.log(document);
<unavailable>

Despite this behavior, I am able to still access the properties of the object.

$ console.log(document.baseURI);
https://the_base_uri.com

Interested in understanding why this occurs and what implications it may have?

javascriptfirefoxconsole.logfirefox-addon-webextensionsbrowser-extension

Answer №1

It appears that the debugger being used (most likely the add-on debugger) is connected to a different process from where the log message originated, which would be a web content process in this scenario. For more information on this topic, you can refer to the MDN page dedicated to debugging: https://developer.mozilla.org/en-US/Add-ons/WebExtensions/Debugging

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