Intro to ES2015 Modules

The video tutorial explains JavaScript modules, focusing on CommonJS and ES2015 modules. It covers how Node.js uses CommonJS by default and how Babel allows the use of ES2015 modules. The tutorial provides examples of both module types, demonstrating how to export and import modules, and discusses the benefits of using modules for application structure and compatibility.

What is the primary purpose of using modules in JavaScript?

• To increase the file size of the application

• To organize code into reusable pieces

• To avoid using Webpack

• To make JavaScript slower

Which syntax is used to export a module in CommonJS?

• require

• export default

• import

• module.exports

How do you import a CommonJS module in a JavaScript file?

• import module from 'module'

• export module from 'module'

• require('module')

• import { module } from 'module'

What keyword is used to export a variable in ES 2015 modules?

• import

• module.exports

• require

• export

In ES 2015 modules, how do you import a specific export from a module?

• module.exports = exportName

• export default exportName

• import { exportName } from 'module'

• require('module')

What does the '*' symbol represent when importing modules in ES 2015?

• Importing all exports as a single object

• Exporting a module

• Ignoring the module

• Importing a single export

What is the benefit of using a default export in ES 2015 modules?

• It requires more code

• It makes the module private

• It simplifies importing without curly braces

• It allows multiple default exports