ljharb/util.promisify

Robustly `.call.bind()` a function

Robust call-bound JavaScript intrinsics, using `call-bind` and `get-intrinsic`.

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

A simple cache for a few of the JS Error constructors.

ES Object-related atoms: Object, ToObject, RequireObjectCoercible

A better forEach

Get and robustly cache all JS language-level intrinsics at first require time

Does this environment have the ability to get the [[Prototype]] of an object on creation with `__proto__`?

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

ES2017 spec-compliant shim for `Object.getOwnPropertyDescriptors` that works in ES5.

`Array.prototype.concat`, but made safe by ignoring Symbol.isConcatSpreadable

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

My shareable eslint config

Command line tool for generating a changelog from git tags and commit history

Convert encodings, uses iconv-lite

Detect if we were run as a result of `npm publish`

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

Define a data property on an object. Will fall back to assignment in an engine without descriptors.