Examine source code of rrweb

{
  "version": "2.0.0",
  "author": "rrweb-io",
  "version_name": "2.0.0-alpha.5",
  "name": "rrweb",
  "content_scripts": [
    {
      "matches": [
        "<all_urls>"
      ],
      "js": [
        "content/index.js"
      ],
      "all_frames": true,
      "run_at": "document_idle"
    }
  ],
  "icons": {
    "16": "assets/icon16.png",
    "48": "assets/icon48.png",
    "128": "assets/icon128.png"
  },
  "permissions": [
    "activeTab",
    "tabs",
    "storage",
    "unlimitedStorage"
  ],
  "manifest_version": 2,
  "background": {
    "persistent": false,
    "scripts": [
      "background/index.js"
    ]
  },
  "browser_action": {
    "default_title": "rrweb extension",
    "default_popup": "popup/popup.html",
    "browser_style": false
  },
  "options_ui": {
    "page": "options/index.html",
    "open_in_tab": true,
    "chrome_style": false
  },
  "web_accessible_resources": [
    "**/*.js"
  ],
  "browser_specific_settings": {
    "gecko": {
      "id": "rrweb@rrweb.io",
      "strict_min_version": "42.0"
    }
  }
}