Node.js · Theory

Assertion

Theory

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Assertion

If you can teach Assertion using Assertion on Isha's board, you know it. If you only know the heading, you don’t.

Assertion order: meaning → one Assertion step Isha can write from memory → one limit. Dumping ten features helps nobody.

Assertion exists so Isha can keep Assertion on Isha's board correct in a campus project.

Isha ships Assertion in a campus project. That is the use case worth saying.

If Assertion on Isha's board breaks under Assertion, check skipping the failure case for Assertion first.

Assertion is not a lonely heading. Isha ties it to Assertion on Isha's board.

Viva for Assertion: what it is → one Assertion step Isha can write from memory → the mistake (skipping the failure case for Assertion).

Exam tip

Board: Assertion on Isha's board. Dry-run Assertion. Name the trap: skipping the failure case for Assertion.

Example

// Assertion
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));

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

Short notes

DefAssertion — Isha uses it for Assertion on Isha's board in a campus project.
RuleAssertion → one Assertion step Isha can write from memory.
RememberAssertion + npm (a campus project).
UseAssertion in a campus project (Assertion on Isha's board).
TrapAssertion — skipping the failure case for Assertion.
ExAssertion → Assertion on Isha's board.

// Assertion 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));

Assertion

Example

Short notes

Questions

Assertion

Example

Short notes

Questions