Delay a promise a specified amount of time

Promisify an event by waiting for it to be emitted

fs-extra contains methods that aren't included in the vanilla Node.js fs package. Such as recursive mkdir, copy, and remove.

Retry a promise-returning or async function

setTimeout as a native Promise

[](https://coveralls.io/github/rijs/fn?branch=master) [](https://travis-ci.org/rijs/fn)

a user-land copy of the node:stream/consumers library from Node.js

Simple integration of jsdom into mocha tests

Add sleep() and usleep() to nodejs