Node.js · Theory

Difference between CommonJS and es6 Modules in Node.js

Theory

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Difference between CommonJS and es6 Modules in Node.js

Difference between CommonJS and es6 Modules (in node) is simple if you keep it on paper. Priya uses it for install express in a new folder.

For Difference between CommonJS and es6 Modules (in node), the event loop is in play. Don’t blame it until you have traced install express.

Skip Difference between CommonJS and es6 Modules (in node) and deleting package-lock blindly shows up in a new folder.

Difference between CommonJS and es6 Modules (in node) shows up in a new folder. Name install express, not “a real-world scenario”.

Don’t do this with Difference between CommonJS and es6 Modules (in node): deleting package-lock blindly. Interviewers spot it in ten seconds.

Difference between CommonJS and es6 Modules (in node) is not a lonely heading. Priya ties it to install express.

Close Difference between CommonJS and es6 Modules (in node) with: “If I skip it, install express goes wrong like this: deleting package-lock blindly.”

Exam tip

Board: install express. Dry-run Difference between CommonJS and es6 Modules (in node). Name the trap: deleting package-lock blindly.

Example

// Difference between CommonJS and es6 Modules in Node.js
const users = [
  { id: 1, name: "Asha" },
  { id: 2, name: "Ravi" },
];

function findUser(id) {
  return users.find((u) => u.id === id) ?? null;
}

console.log(findUser(2));
console.log(users.map((u) => u.name));

Difference between CommonJS and es6 Modules in Node.js: find user 2, then list names. Say both prints.

Short notes

DefDifference between CommonJS and es6 Modules (in node) — Priya uses it for install express in a new folder.
RuleDifference between CommonJS and es6 Modules (in node) → npm init + npm i express.
RememberDifference between CommonJS and es6 Modules (in node) + the event loop (a new folder).
UseDifference between CommonJS and es6 Modules (in node) in a new folder (install express).
TrapDifference between CommonJS and es6 Modules (in node) — deleting package-lock blindly.
ExDifference between CommonJS and es6 Modules (in node) → install express.

// Difference between CommonJS and es6 Modules in Node.js const users = [ { id: 1, name: "Asha" }, { id: 2, name: "Ravi" }, ]; function findUser(id) { return users.find((u) => u.id === id) ?? null; } console.log(findUser(2)); console.log(users.map((u) => u.name));

Difference between CommonJS and es6 Modules in Node.js

Example

Short notes

Questions

Difference between CommonJS and es6 Modules in Node.js

Example

Short notes

Questions