Determine if the JS environment has BigInt support.

Unbox a boxed JS primitive value.

ECMAScript “ToPrimitive” algorithm. Provides ES5 and ES2015 versions.

Is this value negative zero? === will lie to you

This library provides the functionality of PBKDF2 with the ability to use any supported hashing algorithm returned from crypto.getHashes()

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

ES2017 spec-compliant Object.values shim.

ES6 spec-compliant Object.assign shim. From https://github.com/es-shims/es6-shim

Is this value an ES BigInt?

Which kind of boxed JS primitive is this?

An ES2015 spec-compliant `Function.prototype.name` shim

An ES7/ES2016 spec-compliant `Array.prototype.includes` shim/polyfill/replacement that works as far down as ES3.

ES2017 spec-compliant Object.entries shim.

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

Gets the description of a Symbol. Handles `Symbol()` vs `Symbol('')` properly when possible.

Is this specifier a node.js core module?

Determine if a value is an ES6 Symbol or not.

An ES2015 mostly-spec-compliant `Reflect.getPrototypeOf` sham/polyfill/replacement that works in as many engines as possible

ES proposal-spec-compliant Object.fromEntries shim.

An ESnext spec-compliant `Array.prototype.toSorted` shim/polyfill/replacement that works as far down as ES3.