Examine source code of Actual PogChamp

{
  "name": "Actual PogChamp",
  "version": "1.4.1",
  "description": "Script for replacing the twitch.tv global PogChamp emote with the original Gootecks version.",
  "manifest_version": 3,
  "content_scripts": [
    {
      "matches": [
        "*://*.twitch.tv/*"
      ],
      "run_at": "document_end",
      "js": [
        "main.js"
      ]
    }
  ],
  "icons": {
    "128": "images/128.png"
  },
  "permissions": [
    "webNavigation"
  ],
  "host_permissions": [
    "*://*.twitch.tv/*"
  ],
  "web_accessible_resources": [
    {
      "resources": [
        "images/*.png"
      ],
      "matches": [
        "*://*.twitch.tv/*"
      ]
    }
  ],
  "background": {
    "scripts": [
      "background.js"
    ]
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{abbef430-891c-4b93-b8dd-548949a900bd}"
    }
  }
}