index.js

const { exec } = require("child_process");
const fs = require("fs");
const readline = require("readline");

const rl = readline.createInterface({
  input: process.stdin,
  output: process.stdout
});

rl.question("Do you want to rhyme somehting?\n\n", value => {
  const re = new RegExp(/y|ok|sure|fine/gi);
  if (re.test(value)) {
    rl.question(
      "\n\x1b[34mGreat! What word would you like to rhyme?\x1b[0m \n \n",
      value => {
        exec(
          `curl https://api.datamuse.com/words\?rel_rhy\=${value}`,
          (error, stdout, stderr) => {
            if (error) throw error;
            const date = new Date();
            const bestof = JSON.parse(stdout);

            fs.writeFile(
              `./results/${value}-rhyme-from-${date}.json`,
              stdout,
              err => err ? (() => {throw new err})() : [] 
            );
            console.log(
              `\x1b[36m \nYour rhymes are saved and rated in file:\x1b[0m ${value}-rhyme-from-${date}.json!`
            );
            console.log(
              `\nThe best result was\x1b[35m ${bestof[0].word}. \x1b[0m`
            );
            rl.close();
          }
        );
      }
    );
  } else {
    console.log("Too bad...");
    rl.close();
  }
});