es-shims/set

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.

ECMAScript spec abstract operations.

An ES-spec-compliant Map shim/polyfill/replacement that works as far down as ES3

A helper to optimistically set Symbol.toStringTag, when possible.

A better forEach

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

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

ECMAScript spec-compliant polyfill/shim for `globalThis`

`Object.getOwnPropertyDescriptor`, but accounts for IE's broken implementation.

Does the environment have full property descriptor support? Handles IE 8's broken defineProperty/gOPD.

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

ES spec-like internal slots

ES2017 spec-compliant Object.entries shim.

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

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

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

string representations of objects in node and the browser

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

Iterate any iterable JS value. Works robustly in all environments, all versions.

Firefox 17-26 iterators throw a StopIteration object to indicate "done". This normalizes it.

A robust & optimized `Array.from` polyfill, based on the ECMAScript 6 specification.

Get an iterator for any JS language value. Works robustly across all environments, all versions.

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