Examine source code of Twitch Subgift Linker

{
  "manifest_version": 3,
  "name": "twitch-subgift-extractor",
  "description": "Get a link to the moment you were subgifted",
  "homepage_url": "https://github.com/ccorsano/twitch-subgift-extractor-extension",
  "version": "0.0.4",
  "icons": {
    "64": "icons/icon.png"
  },
  "developer": {
    "name": "Christian Corsano",
    "url": "https://conceptoire.com"
  },
  "license": "MIT",
  "browser_specific_settings": {
    "gecko": {
      "id": "@twitch-subgift-extractor",
      "data_collection_permissions": {
        "required": [
          "none"
        ]
      }
    }
  },
  "background": {
    "scripts": [
      "background.js"
    ]
  },
  "permissions": [
    "webRequest",
    "webRequestBlocking",
    "webRequestFilterResponse"
  ],
  "host_permissions": [
    "https://gql.twitch.tv/gql"
  ],
  "content_scripts": [
    {
      "matches": [
        "https://*.twitch.tv/*",
        "https://*.twitch.tv/"
      ],
      "js": [
        "content_script.js"
      ]
    }
  ],
  "page_action": {
    "default_icon": {
      "64": "icons/icon.png"
    },
    "default_popup": "pageAction/index.html",
    "default_title": "twitch-subgift-extractor",
    "show_matches": [
      "https://*.twitch.tv/*",
      "https://*.twitch.tv/"
    ]
  }
}