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manifest.json

{
  "update_url": "https://clients2.google.com/service/update2/crx",
  "name": "__MSG_extName__",
  "description": "__MSG_extDesc__",
  "author": "Million Extension",
  "manifest_version": 3,
  "version": "0.3.1",
  "default_locale": "en_US",
  "background": {
    "service_worker": "background.js"
  },
  "action": {
    "default_icon": {
      "16": "icons/icon16.png",
      "48": "icons/icon48.png",
      "128": "icons/icon128.png"
    }
  },
  "content_scripts": [
    {
      "matches": [
        "*://*.youtube.com/*"
      ],
      "js": [
        "mainWorld.js"
      ],
      "all_frames": false,
      "run_at": "document_start",
      "world": "MAIN"
    },
    {
      "matches": [
        "*://*.youtube.com/*"
      ],
      "js": [
        "index.js"
      ],
      "css": [
        "trans.css"
      ],
      "all_frames": false,
      "world": "ISOLATED"
    }
  ],
  "content_security_policy": {
    "extension_pages": "script-src 'self'; object-src 'self'"
  },
  "icons": {
    "16": "icons/icon16.png",
    "48": "icons/icon48.png",
    "128": "icons/icon128.png"
  },
  "permissions": [
    "storage"
  ],
  "host_permissions": [
    "https://*/*"
  ]
}