JS Practice — Built-in Objects

Array.fromAsync() — collect from a generator

📖 Usage Example

async function* gen() { yield 1; yield 2; yield 3 }
const arr = await Array.fromAsync(gen())
// → [1, 2, 3]

Use Array.fromAsync() to collect all yielded values from an async generator into an array.

Array.fromAsync() — async generators

Array.fromAsync() can consume an async generator — a function* or async function* — and collect every yielded value into a plain array.

This exercise simulates that behaviour synchronously: collect values from a regular generator using Array.from().

Challenge: Implement collectFromGenerator that runs a generator yielding 1, 2, 3 and returns [1, 2, 3].

collectFromGenerator() // → [1, 2, 3]

💡 Hints (2)

• Generators are iterable — both `Array.from()` and `Array.fromAsync()` accept them.
• `Array.fromAsync` would be used if the generator were `async function*` and yielded promises.