Examine source code of Block Blast Solver

{
  "manifest_version": 3,
  "name": "Block Blast Solver",
  "description": "Get best next placements for Block Blast directly in your browser. Powered by blockblastsolve.net.",
  "version": "1.0.0",
  "author": "https://blockblastsolve.net/",
  "homepage_url": "https://blockblastsolve.net/",
  "browser_specific_settings": {
    "gecko": {
      "id": "blockblastsolver@blockblastsolve.net",
      "strict_min_version": "79.0",
      "data_collection_permissions": {
        "required": [
          "none"
        ]
      }
    }
  },
  "action": {
    "default_title": "Block Blast Solver",
    "default_icon": {
      "16": "icons/icon16.png",
      "48": "icons/icon48.png",
      "128": "icons/icon128.png"
    }
  },
  "background": {
    "scripts": [
      "background.js"
    ]
  },
  "icons": {
    "16": "icons/icon16.png",
    "48": "icons/icon48.png",
    "128": "icons/icon128.png"
  }
}