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What is NODE_ENV in Node.js

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What is NODE_ENV in Node.js

NODE_ENV (what is in js) is a Node.js topic. In plain words you use it for a hello server in localhost:3000. Don’t start with a slogan — start with that picture.

Smallest example: node hello.js. Type it, run it, and say what you see. If you can do that from memory, you know NODE_ENV (what is in js).

From the example next to this theory — What is NODE_ENV in Node.

Trap — calling Node ‘a language’. Fix that before you talk about advanced Node.js.

Viva — what is NODE_ENV (what is in js)? Then show node hello.js. Then name the trap.

Exam tip

What is NODE_ENV (what is in js)? Show this: node hello.js. Trap: calling Node ‘a language’.

Example

// What is NODE_ENV 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));

What is NODE_ENV in Node.js: find user 2, then list names. Say both prints.

Short notes

DefNODE_ENV (what is in js) — a hello server in localhost:3000.
Rulenode hello.js
Trapcalling Node ‘a language’
Uselocalhost:3000

// What is NODE_ENV 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));

What is NODE_ENV in Node.js

Example

Short notes

Questions

What is NODE_ENV in Node.js

Example

Short notes

Questions