const { Client } = require('noscord.js');                
const client = new Client();

client.import("addons");

addons.create("Example", "ex", class {
    constructor() {
        this.client = this.parent;
        this.data = [1, 2, 3];
    }
    reverse() {
        return this.data.reverse();
    }
});

client.import("ex");