Make a callback- or promise-based function support both promises and callbacks.

Get the arguments of a function, arrow function, generator function, async function

Retries a function that returns a promise, leveraging the power of the retry module.

An extension lib for jest

Is this value a JS Date object? This module works cross-realm/iframe, and despite ES6 @@toStringTag.

Manage state with style in every framework

Check if a value is a function

Returns a promise from a node-style callback function.

Debounce promise-returning & async functions

Modern JavaScript date utility library

Memoize promise-returning & async functions

is that thing a function? Use this module to find out

Type checking for JavaScript functions

Postgres date column parser

Set a function's length property

Express style path to RegExp utility

Set a function's name property

Remote procedure calls built on top of axon.

A function that returns the normally hidden `AsyncFunction` constructor

Capture and retrieve the last time a function was run