CommonJS require and module.exports in Node.js - Interactive Code Practice

Practice - 5 Tasks

1fill in blank

easy

Complete the code to import the 'fs' module using CommonJS require.

Node.js

const fs = [1]('fs');

Drag options to blanks, or click blank then click option'

Arequire

Bimport

Cinclude

Dload

Attempts:

3 left

💡 Hint

Common Mistakes

Using 'import' instead of 'require'

Using 'include' or 'load' which are not valid in CommonJS

In CommonJS, require is used to import modules.

2fill in blank

medium

Complete the code to export a function named 'greet' using module.exports.

Node.js

module.exports = [1];

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Agreet()

Bgreet

C{ greet }

Dfunction greet()

Attempts:

3 left

💡 Hint

Common Mistakes

Using greet() which calls the function instead of exporting it

Using braces which exports an object, not the function itself

You assign the function name directly to module.exports to export it.

3fill in blank

hard

Fix the error in importing the default export from 'math.js' using require.

Node.js

const add = [1]('./math.js');

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Afetch

Bimport

Crequire

Dinclude

Attempts:

3 left

💡 Hint

Common Mistakes

Using 'import' which is ES Modules syntax

Using 'fetch' or 'include' which are invalid here

Use require to import modules in CommonJS, not import.

4fill in blank

hard

Fill both blanks to export an object with two functions, 'start' and 'stop'.

Node.js

module.exports = { [1], [2] };

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Astart

Bstop

Cbegin

Dend

Attempts:

3 left

💡 Hint

Common Mistakes

Using wrong function names that do not exist

Forgetting to export both functions

Export an object with keys matching the function names you want to export.

5fill in blank

hard

Fill all three blanks to import 'readFile', export a function 'writeFile', and assign it to module.exports.

Node.js

const { [1] } = require('fs');

function [2](path, data) {
  // write data to file
}

module.exports = [3];

Drag options to blanks, or click blank then click option'

AreadFile

BwriteFile

DreadFileSync

Attempts:

3 left

💡 Hint

Common Mistakes

Mixing up imported and exported function names

Not exporting the function correctly

You import readFile from 'fs', define writeFile function, and export it.