Examine source code of Coursera Auto Translator

{
  "manifest_version": 3,
  "name": "Coursera Auto-Subtitle Translator",
  "version": "3.0.0",
  "description": "Traduz e injeta legendas em português ou qualquer outro idioma, com personalização de tamanho e opacidade da legenda no Coursera.",
  "permissions": [
    "activeTab",
    "scripting",
    "storage"
  ],
  "host_permissions": [
    "https://*.coursera.org/*",
    "https://translate.googleapis.com/*"
  ],
  "content_scripts": [
    {
      "matches": [
        "https://*.coursera.org/*"
      ],
      "js": [
        "hijack.js"
      ],
      "run_at": "document_start",
      "world": "MAIN"
    },
    {
      "matches": [
        "https://*.coursera.org/*"
      ],
      "js": [
        "content.js"
      ],
      "run_at": "document_end",
      "world": "ISOLATED"
    }
  ],
  "web_accessible_resources": [
    {
      "resources": [
        "intro_ml_pyspark_pt.vtt",
        "linear_regression_pipeline_pt.vtt"
      ],
      "matches": [
        "https://*.coursera.org/*"
      ]
    }
  ],
  "icons": {
    "16": "icons/icon16.png",
    "32": "icons/icon32.png",
    "48": "icons/icon48.png",
    "96": "icons/icon96.png",
    "128": "icons/icon128.png"
  },
  "action": {
    "default_icon": {
      "16": "icons/icon16.png",
      "32": "icons/icon32.png",
      "48": "icons/icon48.png",
      "96": "icons/icon96.png",
      "128": "icons/icon128.png"
    },
    "default_popup": "popup.html"
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "coursera-auto-translator@araken13.org",
      "strict_min_version": "140.0",
      "data_collection_permissions": {
        "required": [
          "none"
        ]
      }
    }
  }
}