Examine source code of CosDNA Addon

{
  "manifest_version": 2,
  "name": "CosDNA Extension",
  "description": "Open a CosDNA search of the selected text in a new tab.",
  "version": "0.1.4resigned1",
  "background": {
    "scripts": [
      "background.js"
    ]
  },
  "content_scripts": [
    {
      "matches": [
        "<all_urls>"
      ],
      "js": [
        "jquery-3.3.1.min.js",
        "content.js"
      ]
    }
  ],
  "permissions": [
    "contextMenus"
  ],
  "icons": {
    "16": "icon16.png",
    "48": "icon48.png",
    "128": "icon128.png"
  },
  "browser_action": {},
  "browser_specific_settings": {
    "gecko": {
      "id": "{747d250c-02a2-4a9b-a6f1-36ebec672ece}"
    }
  }
}