Implementation of Function.prototype.bind

Robustly `.call.bind()` a function

string representations of objects in node and the browser

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

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

ECMAScript spec abstract operations.

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

Is this JS value callable? Works with Functions and GeneratorFunctions, despite ES6 @@toStringTag.

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

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

Is this value a JS regex? Works cross-realm/iframe, and despite ES6 @@toStringTag

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

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

A better forEach

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

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

Object.prototype.hasOwnProperty.call shortcut

ES5 spec-compliant shim for String.prototype.trim

ES2017 spec-compliant Object.entries shim.

Utility package to determine if an `Array.prototype` method properly boxes the callback's receiver and third argument.

ECMAScript extensions and shims

Configuration and scripts for Create React App.

Give your JavaScript the ability to speak many languages.

Analytics utility functions used by 'analytics' module