Read values from console input in Node

readable.js

const readline = require("readline");
const { Readable } = require("stream");

const readableStream = new Readable();
readableStream.push("3 abb aab ababa");
readableStream.push(null);

const input = readline.createInterface({
  input: readableStream,
  output: process.stdout,
  terminal: false,
});

let inputList = [];

input.on("line", (value) => {
  console.log("Input: ", value);
  inputList = value.split(" ");
});

input.on("close", () => {
  const values = getValues(inputList);
  const goodValues = transformValues(values);
  console.log("Output: ", goodValues);
});

function getValues(inputList) {
  const values = [];
  inputList.forEach((value, index) => {
    if (index != 0) {
      values.push(value);
    }
  });
  return values;
}

function transformValues(values) {
  const goodValues = [];
  values.forEach((value) => {
    let characters = value.split("");
    let newCharacters = [];
    characters.forEach((letter, index) => {
      if (index == 0) {
        newCharacters.push(letter);
      }
      if (letter != characters[index - 1] && index != 0) {
        newCharacters.push(letter);
      }
    });
    goodValues.push(newCharacters.join(""));
  });
  return goodValues.join(" ");
}