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Node.js · Theory

Versions

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Theory

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Versions

If you can teach Versions using Sara walking through Versions, you know it. If you only know the heading, you don’t.

For Versions, npm is in play. Don’t blame it until you have traced Sara walking through Versions.

Without Versions, a first job task gets messy and Sara walking through Versions is hard to trust.

Versions shows up in a first job task. Name Sara walking through Versions, not “a real-world scenario”.

Versions miss — skipping the failure case for Versions. Fix it before you talk about advanced Node.js.

After Versions, Sara should still remember skipping the failure case for Versions.

Close Versions with: “If I skip it, Sara walking through Versions goes wrong like this: skipping the failure case for Versions.”

Exam tip

Say Versions in one breath, then one Versions step Sara can write from memory, then skipping the failure case for Versions.

Example

// Versions
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));

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

Short notes

  • DefVersions — Sara uses it for Sara walking through Versions in a first job task.
  • RuleVersions → one Versions step Sara can write from memory.
  • RememberVersions + npm (a first job task).
  • UseVersions in a first job task (Sara walking through Versions).
  • TrapVersions — skipping the failure case for Versions.
  • ExVersions → Sara walking through Versions.

Questions

1

What is Versions? Teach it with Sara walking through Versions.

2

Where does Versions show up in a first job task?

3

How do you catch skipping the failure case for Versions?

4

Show Versions in npm terms — three lines max.

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