Function flatMap

Remaps and then flattens an iterable, similar to Array.flatMap, except it flattens all iterable values, including strings.

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

const i = pipe(
    ['hello', 'world!'],
    flatMap(a => a.length)
);

console.log(...i); //=> 5 6
Copy

Note that when handling a synchronous iterable, this operator can remap+flatten only synchronous sub-iterables. But when handling an asynchronous iterable, it can remap+flatten mixed sub-iterables, i.e. any combination of synchronous and asynchronous sub-iterables.

See

• flat
• map