JS Built-ins
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Promiseracebeginner

Promise.race([]) — typeof

📖 Usage Example
const slow = new Promise(res => setTimeout(() => res('slow'), 200))
const fast = new Promise(res => setTimeout(() => res('fast'), 50))
Promise.race([slow, fast]).then(v => {
  console.log(v) // → 'fast'
})

Promise.race() returns a promise that settles as soon as the first promise in the iterable settles.

typeof Promise.race()

typeof Promise.race([]) is 'object'.

Challenge: Verify the return type.

💡 Hints (1)
  • • Promise.race() returns a Promise object.