Examine source code of Doggo Substitution

{
  "manifest_version": 2,
  "name": "Doggo Substitution",
  "description": "Replaces meme words with their proper equivalent.",
  "homepage_url": "https://github.com/mdn/webextensions-examples/tree/master/emoji-substitution",
  "version": "1.1resigned1",
  "icons": {
    "48": "icons/icon.png",
    "96": "icons/icon@2x.png"
  },
  "content_scripts": [
    {
      "matches": [
        "<all_urls>"
      ],
      "js": [
        "./wordMap.js",
        "./substitute.js"
      ]
    }
  ],
  "browser_specific_settings": {
    "gecko": {
      "id": "{1d235cc5-0e31-4afe-b71a-ac6d173d7923}"
    }
  }
}