The Infinity global property is a numeric value representing infinity.

The Map object holds key-value pairs and remembers the original insertion order of the keys. Any value (both objects and primitive values) may be used as either a key or a value.

The parseFloat() function parses a string argument and returns a floating point number.

The ReferenceError object represents an error when a variable that doesn't exist (or hasn't yet been initialized) in the current scope is referenced.

The <feBlend> SVG filter primitive composes two objects together ruled by a certain blending mode. This is similar to what is known from image editing software when blending two layers. The mode is defined by the mode attribute.

The next() method of Generator instances returns an object with two properties done and value. You can also provide a parameter to the next method to send a value to the generator.

The Symbol.iterator static data property represents the well-known symbol @@iterator. The iterable protocol looks up this symbol for the method that returns the iterator for an object. In order for an object to be iterable, it must have an @@iterator key.

The Object.setPrototypeOf() static method sets the prototype (i.e., the internal [[Prototype]] property) of a specified object to another object or null.

The exec() method of RegExp instances executes a search with this regular expression for a match in a specified string and returns a result array, or null.

Assertions include boundaries, which indicate the beginnings and endings of lines and words, and other patterns indicating in some way that a match is possible (including look-ahead, look-behind, and conditional expressions).