Function last

Produces a one-value iterable, with the last emitted value.

import {pipe, last} from 'iter-ops';

const i = pipe(
    [1, 2, 3],
    last()
);

console.log(...i); //=> 3

console.log(i.first); //=> 3
Copy

When the optional predicate is provided, the last value satisfying it will be emitted.

import {pipe, last} from 'iter-ops';

const i = pipe(
    [1, 2, 3, 4, 5, 6, 7, 8, 9],
    last(a => a % 2 === 0) // last even number
);

console.log(i.first); //=> 8
Copy

Note that the predicate can only return a Promise inside an asynchronous pipeline, or else the Promise will be treated as a truthy value.

See

• takeLast
• first