Node.js · Theory

Export Module

Theory

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Export Module is a Node.js idea you prove with install express, not with a slogan.

Do Export Module once by hand. npm init + npm i express. Change one input. Say the new result out loud.

Skip Export Module and deleting package-lock blindly shows up in a new folder.

Neha ships Export Module in a new folder. That is the use case worth saying.

If install express breaks under Export Module, check deleting package-lock blindly first.

Export Module is not a lonely heading. Neha ties it to install express.

One breath for Export Module, then install express, then deleting package-lock blindly. Sit down.

Exam tip

For Export Module: definition + a new folder + one failure.

// math.js style
function add(a, b) { return a + b; }
module.exports = { add };

const math = { add };
console.log(math.add(2, 3));

Export Module — commonJS uses require / module.exports. ESM uses import / export.