fun

fun() is an equivalent of gen(). It wraps a list of functions organized as a sequential pipeline.

fun(...fns)

The differences with gen() are:

• It returns an asynchronous function instead of an asynchronous generator function.
• Values produced by generator functions are collected in arrays and passed with many() of defs. See many values.

It exists mostly for backwards compatibility with older versions of stream-chain and for possible performance reasons.

Examples

import fun from 'stream-chain/fun.js';
import {getManyValues} from 'stream-chain/defs.js';

const chain = fun(
  function* (n) { for (let i = 0; i < n; ++i) yield i; },
  x => x * x
);
for (const i of getManyValues(await chain(3))) {
  console.log(i); // 0, 1, 4
}