Examine source code of MangaDex helpers

{
  "manifest_version": 2,
  "name": "MangaDex helpers",
  "description": "Useful helper features for MangaDex. More features coming in the future if I have time.",
  "version": "1.1",
  "icons": {
    "48": "icon48.png",
    "128": "icon128.png"
  },
  "content_scripts": [
    {
      "matches": [
        "https://mangadex.org/titles*",
        "https://mangadex.org/search*"
      ],
      "js": [
        "helpers.js"
      ]
    }
  ],
  "permissions": [
    "*://mangadex.org/*",
    "*://api.mangadex.org/*"
  ],
  "browser_action": {
    "default_icon": "icon128.png",
    "default_title": "MangaDex helpers"
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{0df24866-a88a-48dc-a285-33cc094369df}"
    }
  }
}