ljharb/object.assign

Robustly `.call.bind()` a function

Define multiple non-enumerable properties at once. Uses `Object.defineProperty` when available; falls back to standard assignment in older engines.

Determine if the JS environment has Symbol support. Supports spec, or shams.

An Object.keys replacement, in case Object.keys is not available. From https://github.com/es-shims/es5-shim

Loosely test a package's compliance with the es-shim API

My shareable eslint config

Use `npx aud` instead of `npm audit`, whether you have a lockfile or not!

browser-side require() the node way

A better forEach

Does this JS environment support the `name` property on functions?

Does the current JS environment have strict mode? ES5+ should; but let's not assume.

Given an object and a property, replaces a property descriptor (or deletes it), and returns a thunk to restore it.

Command line tool for creating or updating a .npmignore file based on .gitignore.

the Istanbul command line interface

Ensure that when you `npm publish`, the "latest" tag is only set for the truly latest version.

tap-producing test harness for node and browsers

A robust, ES3 compatible, "has own property" predicate.

the definitive JavaScript type testing library

Hardened JavaScript for Fearless Cooperation