Examine source code of Mashiro for Firefox

{
  "name": "Mashiro",
  "description": "Enable Popular Mode on Pixiv",
  "version": "0.2.0",
  "manifest_version": 3,
  "icons": {
    "16": "./images/mashiro.png",
    "32": "./images/mashiro.png",
    "64": "./images/mashiro.png",
    "128": "./images/mashiro.png"
  },
  "background": {
    "scripts": [
      "/background.js"
    ]
  },
  "permissions": [
    "scripting"
  ],
  "host_permissions": [
    "https://www.pixiv.net/*"
  ],
  "content_scripts": [
    {
      "matches": [
        "https://www.pixiv.net/*"
      ],
      "js": [
        "jquery-3.6.0.min.js"
      ]
    }
  ],
  "browser_specific_settings": {
    "gecko": {
      "id": "{2d0dc32d-40ad-49ff-a22d-824e31a32d28}",
      "strict_min_version": "113.0"
    }
  }
}