manifest.json

{
  "name": "dev.Console",
  "version": "1.1.0",
  "description": "Adds a JavaScript console to Melvor Idle, similar to that available in major browser's developer tools. Open the console by pressing ~",
  "content_scripts": [
    {
      "js": ["console.js"],
      "css": ["style.css"]
    }
  ]
}