galactic-bot/structure/client/components/commands/developer/Evaluate.js

const { inspect } = require('util');
const { username } = require('os').userInfo();

let _storage = null; //eslint-disable-line

const { Command } = require('../../../../interfaces/');

class Evaluate extends Command {

    constructor(client) {

        super(client, {
            name: 'evaluate',
            module: 'developer',
            aliases: [
                'eval', 
                'e'
            ],
            usage: '<code>',
            restricted: true,
            arguments: [
                {
                    name: 'log',
                    type: 'BOOLEAN',
                    types: ['FLAG'],
                    description: "Logs the output in the console."
                },
                {
                    name: 'hide',
                    type: 'BOOLEAN',
                    types: ['FLAG'],
                    description: "Hides the output from the channel."
                }
            ],
            showUsage: true
        });

    }
    
    async execute(message, { params, args }) {

        params = params.join(' ');

        try {
            let evaled = eval(params); //eslint-disable-line no-eval
            if(evaled instanceof Promise) await evaled;
            if(typeof evaled !== 'string') evaled = inspect(evaled);

            evaled = evaled
                .replace(new RegExp(this.client.token, 'gu'), '<redacted>')
                .replace(new RegExp(username, 'gu'), '<redacted>');

            if(args.log) this.client.logger.debug(`[${message.author.tag}] Evaluation Result: ${evaled}`);

            if (evaled.length > 1850) {
                evaled = `${evaled.substring(0, 1850)}...`;
            }
            await message.respond(
                `Evaluation was successful.\`\`\`js\n${evaled}\`\`\``, 
                { emoji: 'success' }
            );


        } catch(error) {

            let msg = `${error}${error.stack ? `\n${error.stack}` : ''}`;

            if(args.log) this.client.logger.debug(`[${message.author.tag}] Evaluation Failed: ${msg}`);

            if(msg.length > 2000) msg = `${msg.substring(0, 1900)}...`;
            await message.respond(
                `Evaluation failed.\`\`\`js\n${msg}\`\`\``, 
                { emoji: 'failure' }
            );

        }
            
    }

}

module.exports = Evaluate;