Examine source code of JavaScript File Blocker

{
  "manifest_version": 2,
  "name": "JavaScript File Blocker",
  "version": "1.0",
  "description": "Blocks JavaScript files on the current web page.",
  "browser_action": {
    "default_icon": "icon.png"
  },
  "permissions": [
    "webNavigation",
    "webRequest",
    "webRequestBlocking",
    "*://*/*"
  ],
  "background": {
    "scripts": [
      "background.js"
    ]
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{fe607b1b-270a-401d-a96d-f061afdb794a}"
    }
  }
}