es-shims/array.prototype.unshift

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.

ECMAScript spec abstract operations.

ES Object-related atoms: Object, ToObject, RequireObjectCoercible

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

ES Math-related intrinsics and helpers, robustly cached.

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

Evaluates javascript code blocks from markdown files.

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.

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

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

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