Node.js · Theory

Conditional Exports

Theory

499/723

Conditional Exports

Conditional Exports is a Node.js topic. In plain words you use it for a short Conditional Exports example in a script or API on localhost. Don’t start with a slogan — start with that picture.

Smallest example: the smallest Conditional Exports example you can type. Type it, run it, and say what you see. If you can do that from memory, you know Conditional Exports.

From the example next to this theory — Conditional Exports: find user 2, then list names.

Trap — only saying “Conditional Exports” with no example. Fix that before you talk about advanced Node.js.

Viva — what is Conditional Exports? Then show the smallest Conditional Exports example you can type. Then name the trap.

Exam tip

What is Conditional Exports? Show this: the smallest Conditional Exports example you can type. Trap: only saying “Conditional Exports” with no example.

Example

// Conditional Exports
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));

Conditional Exports: find user 2, then list names. Say both prints.

Short notes

DefConditional Exports — a short Conditional Exports example in a script or API on localhost.
Rulethe smallest Conditional Exports example you can type
Traponly saying “Conditional Exports” with no example
Usea script or API on localhost

Node.js · Theory

Conditional Exports

← All stacks

Theory

499/723

Conditional Exports

Conditional Exports is a Node.js topic. In plain words you use it for a short Conditional Exports example in a script or API on localhost. Don’t start with a slogan — start with that picture.

Smallest example: the smallest Conditional Exports example you can type. Type it, run it, and say what you see. If you can do that from memory, you know Conditional Exports.

From the example next to this theory — Conditional Exports: find user 2, then list names.

Trap — only saying “Conditional Exports” with no example. Fix that before you talk about advanced Node.js.

Viva — what is Conditional Exports? Then show the smallest Conditional Exports example you can type. Then name the trap.

Exam tip

What is Conditional Exports? Show this: the smallest Conditional Exports example you can type. Trap: only saying “Conditional Exports” with no example.

Example

// Conditional Exports
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));

Conditional Exports: find user 2, then list names. Say both prints.

Short notes

DefConditional Exports — a short Conditional Exports example in a script or API on localhost.
Rulethe smallest Conditional Exports example you can type
Traponly saying “Conditional Exports” with no example
Usea script or API on localhost

Conditional Exports

Example

Short notes

Questions

Conditional Exports

Example

Short notes

Questions