Examine source code of Quick M2 Cache Cleaner

{
  "name": "Quick M2 Cache Cleaner",
  "version": "1.0.2",
  "description": "Quich cache cleaning for Magento 2.",
  "homepage_url": "https://www.nikola-tujkovic.in.rs/",
  "manifest_version": 2,
  "browser_action": {
    "default_title": "Quick M2 Cache Cleaner",
    "default_popup": "popup.html",
    "default_icon": {
      "16": "images/icon16.png",
      "32": "images/icon32.png",
      "48": "images/icon48.png",
      "128": "images/icon128.png"
    }
  },
  "icons": {
    "16": "images/icon16.png",
    "32": "images/icon32.png",
    "48": "images/icon48.png",
    "128": "images/icon128.png"
  },
  "background": {
    "scripts": [
      "background.js"
    ]
  },
  "commands": {
    "clean-quick": {
      "suggested_key": {
        "default": "Alt+Q"
      },
      "description": "Quick Clean"
    },
    "clean-submit": {
      "suggested_key": {
        "default": "Alt+S"
      },
      "description": "Submit"
    },
    "clean-full": {
      "suggested_key": {
        "default": "Alt+A"
      },
      "description": "Full Clean"
    }
  },
  "permissions": [
    "tabs"
  ],
  "content_scripts": [
    {
      "matches": [
        "*://*/*/admin/cache/index/*"
      ],
      "js": [
        "script.js"
      ],
      "css": [
        "style.css"
      ]
    }
  ],
  "web_accessible_resources": [
    "style.css,Roboto-Regular.ttf"
  ],
  "browser_specific_settings": {
    "gecko": {
      "id": "tujkovicn@gmail.com",
      "strict_min_version": "57.0"
    }
  }
}