config.js

global.config = require('../config.json');
const fs = require('fs');
const inquirer = require('inquirer');

global.configController = {
    setConfig: (key, value) => {
        global.config[key] = value;

        fs.writeFileSync("./config.json", JSON.stringify(config, null, 2));
    },
    editConfig: async (key) => {
        let answers = await inquirer.prompt({
            type: 'input',
            name: key,
            message: `Enter value for ${key}: `,
        });

        configController.setConfig(key, (answers[key] === 'true' ? true : (answers[key] === 'false' ? false : answers[key]))); 
    },
    configure: async () => {
        let answers = await inquirer.prompt([{
            type: "list",
            name: "configMenu",
            message: "Select an option you want to change",
            choices: [
                {
                    value: 'rpc',
                    name: "\tProvider RPC: " + config["rpc"],
                    short: "\n\tCurrent Provider: " + config["rpc"]
                },
                {
                    value: 'walletKey',
                    name: "\tChange Private Key",
                    short: "\n\tCurrent Wallet: " + cryptoController.sender
                },
                {
                    value: 'relayUrl',
                    name: "\tRelayer: " + config["relayUrl"],
                    short: "\n\tRelayer: " + config["relayUrl"]
                },
                {
                    value: 'r',
                    name: "\tReturn to main menu\n"
                }
            ]
        }])

        await commandController[answers.configMenu](answers.configMenu);

    }
}