JS Built-ins
Promiseresolvebeginner

Promise.resolve(undefined) β€” instanceof

πŸ“– Usage Example
const p = Promise.resolve(42)
p.then(v => console.log(v)) // β†’ 42

Promise.resolve() creates an already-resolved promise with the given value.

Promise.resolve(undefined)

Promise.resolve(undefined) instanceof Promise is true.

Challenge: Verify resolving undefined returns a Promise.

πŸ’‘ Hints (1)
  • β€’ Promise.resolve() with no argument works too.