FAQ: Learn Node.js - Writable Streams

This community-built FAQ covers the “Writable Streams” exercise from the lesson “Learn Node.js”.

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This exercise can be found in the following Codecademy content:

Learn Node.js

FAQs on the exercise Writable Streams

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I tried doing something like this:

const readline = require(‘readline’);
const fs = require(‘fs’);

const myInterface = readline.createInterface({
input: fs.createReadStream(‘shoppingList.txt’)

const fileStream = fs.createWriteStream(“shoppingResults.txt”);

var transformData = function(data){
fileStream.write(They were out of: ${data}\n);

myInterface.on(“line”, transformData);

But fileStream.end() threw an error. Why is fileStream.end() not necessary for this exercise?