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

Determine if an object is a Buffer

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

ECMAScript spec abstract operations.

Object.prototype.hasOwnProperty.call shortcut

Implementation of Function.prototype.bind

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

Robustly `.call.bind()` a function

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

A library for deep (recursive) merging of Javascript objects

Is this an arguments object? It's a harder question than you think.

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

ECMAScript extensions and shims

js function for hashing messages with MD5

utilities for encryption and hashing

character encoding utilities

Throttle and debounce functions.

ES Proposal spec-compliant shim for Promise.prototype.finally

The progressive JavaScript framework for building modern web UI.

deep copy data

Polyfill for ES6 Promise

A library to edit lottie-web animations dynamically