Node.js · Theory

Error.captureStackTrace((argetObject[, constructorOpt]) function in Node.js

Theory

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Error.captureStackTrace((argetObject[, constructorOpt]) function in Node.js

Don’t start Error.captureStackTrace((argetObject[, constructorOpt]) function with jargon. Start with Kabir walking through Error.captureStackTraceargetObject[, constructorOpt] function. That is the whole point.

Keep Error.captureStackTrace((argetObject[, constructorOpt]) function small. Kabir should finish Kabir walking through Error.captureStackTraceargetObject[, constructorOpt] function in a few lines, not a 40-line dump.

Error.captureStackTrace((argetObject[, constructorOpt]) function exists so Kabir can keep Kabir walking through Error.captureStackTraceargetObject[, constructorOpt] function correct in lab hour.

Kabir ships Error.captureStackTrace((argetObject[, constructorOpt]) function in lab hour. That is the use case worth saying.

If Kabir walking through Error.captureStackTraceargetObject[, constructorOpt] function breaks under Error.captureStackTrace((argetObject[, constructorOpt]) function, check skipping the failure case for Error.captureStackTraceargetObject[, constructorOpt] function first.

Place Error.captureStackTrace((argetObject[, constructorOpt]) function next to nearby Node.js work — one Error.captureStackTraceargetObject[, constructorOpt] function step Kabir can write from memory is the link.

Viva for Error.captureStackTrace((argetObject[, constructorOpt]) function: what it is → one Error.captureStackTraceargetObject[, constructorOpt] function step Kabir can write from memory → the mistake (skipping the failure case for Error.captureStackTraceargetObject[, constructorOpt] function).

Exam tip

Board: Kabir walking through Error.captureStackTraceargetObject[, constructorOpt] function. Dry-run Error.captureStackTrace((argetObject[, constructorOpt]) function. Name the trap: skipping the failure case for Error.captureStackTraceargetObject[, constructorOpt] function.

Example

// Error.captureStackTrace((argetObject[, constructorOpt]) function 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));

Error.captureStackTrace((argetObject[, constructorOpt]) function in Node.js: find user 2, then list names. Say both prints.

Short notes

DefError.captureStackTrace((argetObject[, constructorOpt]) function — Kabir uses it for Kabir walking through Error.captureStackTraceargetObject[, constructorOpt] function in lab hour.
RuleError.captureStackTrace((argetObject[, constructorOpt]) function → one Error.captureStackTraceargetObject[, constructorOpt] function step Kabir can write from memory.
RememberError.captureStackTrace((argetObject[, constructorOpt]) function + the event loop (lab hour).
UseError.captureStackTrace((argetObject[, constructorOpt]) function in lab hour (Kabir walking through Error.captureStackTraceargetObject[, constructorOpt] function).
TrapError.captureStackTrace((argetObject[, constructorOpt]) function — skipping the failure case for Error.captureStackTraceargetObject[, constructorOpt] function.
ExError.captureStackTrace((argetObject[, constructorOpt]) function → Kabir walking through Error.captureStackTraceargetObject[, constructorOpt] function.

Error.captureStackTrace((argetObject[, constructorOpt]) function in Node.js

Error.captureStackTrace((argetObject[, constructorOpt]) function exists so Kabir can keep Kabir walking through Error.captureStackTraceargetObject[, constructorOpt] function correct in lab hour.

Kabir ships Error.captureStackTrace((argetObject[, constructorOpt]) function in lab hour. That is the use case worth saying.

Exam tip

// Error.captureStackTrace((argetObject[, constructorOpt]) function 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));

Error.captureStackTrace((argetObject[, constructorOpt]) function in Node.js

Example

Short notes

Questions

Error.captureStackTrace((argetObject[, constructorOpt]) function in Node.js

Example

Short notes

Questions