Robustly `.call.bind()` a function

ECMAScript spec abstract operations.

Is this value a JS Typed Array? This module works cross-realm/iframe, does not depend on `instanceof` or mutable properties, and despite ES6 Symbol.toStringTag.

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

Which kind of Typed Array is this JavaScript value? Works cross-realm, without `instanceof`, and despite Symbol.toStringTag.

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

Give a regex, get a robust predicate function that tests it against a string.

Is this value a JS ArrayBuffer?

Store information about any JS value in a side channel. Uses WeakMap if available.

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

deterministic JSON.stringify() with custom sorting to get deterministic hashes from stringified results