Filters an array with an async function
function filterAsync<T>(arr: T[], fn: AsyncFunc<T, any>)
// Example:
await filterAsync([1, 2, 3], asyncIsEven) //=> [2]
Filters an array with an async function
function filterAsync<T>(arr: T[], fn: AsyncFunc<T, any>)
// Example:
await filterAsync([1, 2, 3], asyncIsEven) //=> [2]