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.

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

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

A better forEach

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

ECMAScript spec-compliant polyfill/shim for `globalThis`

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.

ES spec-like internal slots

`Iterator.prototype`, or a shared object to use.

ES2017 spec-compliant Object.entries shim.

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

My shareable eslint config

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

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

Convert encodings, uses iconv-lite

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.

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