Destructuring and Spread

Destructuring pulls fields out of objects/arrays. Spread (...) copies or merges.

• const { name } = user;
• const [first, ...rest] = list;
• const next = { ...user, role: "lead" };

const user = { name: "Ada", role: "dev" };
const { name } = user;
const copy = { ...user, role: "lead" };
console.log(name, copy.role);

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