Examine source code of Emoji everywhere

{
  "name": "Emoji everywhere",
  "description": "Utilisez les emojis partout, avec un simple raccourcis clavier, ou avec une boîte de dialogue, ne perdez plus de temps !",
  "version": "1.0",
  "manifest_version": 3,
  "browser_specific_settings": {
    "gecko": {
      "id": "emoji@lesvlogsdundev.com",
      "strict_min_version": "42.0"
    }
  },
  "action": {
    "default_popup": "popup.html",
    "default_icon": {
      "16": "/images/logo-16.png",
      "32": "/images/logo-32.png",
      "48": "/images/logo-48.png",
      "128": "/images/logo-128.png"
    }
  },
  "background": {
    "scripts": [
      "service.js"
    ]
  },
  "web_accessible_resources": [
    {
      "resources": [
        "emoji.json"
      ],
      "matches": [
        "http://*/*",
        "https://*/*"
      ]
    }
  ],
  "content_scripts": [
    {
      "matches": [
        "http://*/*",
        "https://*/*"
      ],
      "js": [
        "emoji-discord.js"
      ]
    }
  ],
  "icons": {
    "16": "/images/logo-16.png",
    "32": "/images/logo-32.png",
    "48": "/images/logo-48.png",
    "128": "/images/logo-128.png"
  }
}