Examine source code of YA Readwise Highlighter

{
  "manifest_version": 3,
  "name": "__MSG_extensionName__",
  "version": "1.4.0",
  "description": "__MSG_extensionDescription__",
  "default_locale": "en",
  "icons": {
    "16": "icon/toolbar-icon.png",
    "48": "icon/toolbar-icon.png",
    "128": "icon/toolbar-icon.png"
  },
  "permissions": [
    "activeTab",
    "storage",
    "contextMenus",
    "scripting",
    "tabs",
    "alarms"
  ],
  "host_permissions": [
    "*://*/*",
    "https://readwise.io/*"
  ],
  "background": {
    "service_worker": "js/worker.js",
    "scripts": [
      "js/shared/constants.js",
      "js/shared/utils.js",
      "js/background/api.js",
      "js/background/enrichment.js",
      "js/worker.js"
    ]
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{d5a1b3c7-e2f4-4a5d-b8d9-0c1e2f3a4b5c}",
      "strict_min_version": "142.0",
      "data_collection_permissions": {
        "required": [
          "none"
        ],
        "optional": []
      }
    }
  },
  "action": {
    "default_icon": {
      "16": "icon/toolbar-icon.png",
      "32": "icon/toolbar-icon.png",
      "48": "icon/toolbar-icon.png",
      "128": "icon/toolbar-icon.png"
    },
    "default_title": "Save to Reader"
  },
  "options_ui": {
    "page": "html/options.html",
    "open_in_tab": true
  },
  "content_scripts": [
    {
      "matches": [
        "http://*/*",
        "https://*/*"
      ],
      "js": [
        "js/shared/constants.js",
        "js/shared/utils.js",
        "js/content/highlighter.js",
        "js/content/ui.js",
        "js/content/main.js"
      ],
      "css": [
        "css/content.css",
        "css/globalHighlightStyles.css"
      ]
    }
  ],
  "web_accessible_resources": [
    {
      "resources": [
        "audio/*.m4a",
        "css/*.css",
        "icon/*.png"
      ],
      "matches": [
        "http://*/*",
        "https://*/*"
      ]
    }
  ]
}