three.js/devtools/manifest.json

{
	"manifest_version": 3,
	"name": "Three.js DevTools",
	"version": "1.15",
	"description": "Developer tools extension for Three.js",
	"icons": {
		"128": "icons/128-light.png"
	},
	"action": {},
	"devtools_page": "index.html",
	"background": {
		"service_worker": "background.js"
	},
	"content_scripts": [{
		"matches": ["<all_urls>"],
		"js": ["constants.js", "bridge.js", "highlight.js"],
		"all_frames": true,
		"run_at": "document_start",
		"world": "MAIN",
		"match_about_blank": true
	}, {
		"matches": ["<all_urls>"],
		"js": ["content-script.js"],
		"all_frames": true,
		"run_at": "document_start",
		"match_about_blank": true
	}],
	"permissions": [
		"activeTab",
		"webNavigation"
	]
}