Examine source code of CPH Submit Plus

{
  "name": "CPH Submit Plus",
  "author": "agrawal-d@outlook.com",
  "homepage_url": "https://github.com/BeeNoANo/cph-submit-plus",
  "version": "1.0.0",
  "description": "A clone version of the original version that has been edited to fit contest and group submissions. ",
  "icons": {
    "48": "icon-48.png"
  },
  "manifest_version": 2,
  "background": {
    "scripts": [
      "dist/backgroundScript.js"
    ]
  },
  "permissions": [
    "scripting",
    "*://localhost/*",
    "*://codeforces.com/*",
    "webNavigation"
  ],
  "browser_specific_settings": {
    "gecko": {
      "id": "cph-submit-plus-2@beenoano",
      "strict_min_version": "58.0"
    }
  }
}