Examine source code of Hermes Browser Extension

{
  "manifest_version": 3,
  "default_locale": "en",
  "name": "__MSG_extensionName__",
  "short_name": "__MSG_extensionShortName__",
  "version": "0.3.2",
  "description": "__MSG_extensionDescription__",
  "icons": {
    "16": "assets/icons/icon-16.png",
    "32": "assets/icons/icon-32.png",
    "48": "assets/icons/icon-48.png",
    "128": "assets/icons/icon-128.png"
  },
  "permissions": [
    "activeTab",
    "alarms",
    "contextMenus",
    "downloads",
    "scripting",
    "storage",
    "tabs"
  ],
  "host_permissions": [
    "http://127.0.0.1/*",
    "http://localhost/*",
    "http://*/*",
    "https://*/*",
    "file:///*"
  ],
  "action": {
    "default_title": "__MSG_openExtension__",
    "default_icon": {
      "16": "assets/icons/icon-16.png",
      "32": "assets/icons/icon-32.png",
      "48": "assets/icons/icon-48.png",
      "128": "assets/icons/icon-128.png"
    }
  },
  "background": {
    "scripts": [
      "background.js"
    ],
    "type": "module"
  },
  "sidebar_action": {
    "default_icon": {
      "16": "assets/icons/icon-16.png",
      "32": "assets/icons/icon-32.png",
      "48": "assets/icons/icon-48.png",
      "128": "assets/icons/icon-128.png"
    },
    "default_title": "__MSG_extensionName__",
    "default_panel": "sidepanel.html"
  },
  "commands": {
    "_execute_action": {
      "suggested_key": {
        "default": "Alt+H",
        "mac": "Alt+H"
      },
      "description": "__MSG_openExtension__"
    },
    "_execute_sidebar_action": {
      "suggested_key": {
        "default": "Ctrl+Shift+H",
        "mac": "Command+Shift+H"
      },
      "description": "__MSG_openSidebar__"
    }
  },
  "content_scripts": [
    {
      "matches": [
        "http://*/*",
        "https://*/*",
        "file:///*"
      ],
      "js": [
        "lib/browser-api-global.js",
        "content-extractor.js",
        "content.js",
        "lib/i18n-content.js",
        "content-inline-helper.js"
      ],
      "run_at": "document_idle"
    }
  ],
  "web_accessible_resources": [
    {
      "resources": [
        "assets/img/hermes-browser-extension-icon-box-white.png",
        "assets/img/hermes-browser-extension-icon-ink.png"
      ],
      "matches": [
        "http://*/*",
        "https://*/*",
        "file:///*"
      ]
    }
  ],
  "content_security_policy": {
    "extension_pages": "script-src 'self'; object-src 'self'; img-src 'self' data: blob:; media-src 'self'; connect-src http: https: wss: ws://127.0.0.1:* ws://localhost:*;"
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "hermes-browser-extension@abundantbeing.github.io",
      "strict_min_version": "142.0",
      "data_collection_permissions": {
        "required": [
          "websiteContent",
          "personalCommunications"
        ]
      }
    }
  }
}