Function filter

Filters elements in an input iterable based on a given async predicate function. Returns a new asynchronous iterable with elements that satisfy the predicate.

Returns

A function that accepts an input iterable and returns a new asynchronous iterable with the filtered elements.

Example

const input = [1, 2, 3, 4];
const isEven = async (x: number) => x % 2 === 0;
const filteredIterable = filter<number>(isEven)(input);

(async () => {
  for await (const x of filteredIterable) {
    console.log(x); // Logs 2, 4
  }
})();