The Atomics.exchange() static method exchanges a given value at a given position in the array and returns the old value at that position. This atomic operation guarantees that no other write happens between the read of the old value and the write of the new value.

The Reflect.get() static method is like the property accessor syntax, but as a function.

The Reflect.getOwnPropertyDescriptor() static method is like Object.getOwnPropertyDescriptor(). It returns a property descriptor of the given property if it exists on the object, undefined otherwise.

The Map[Symbol.species] static accessor property is an unused accessor property specifying how to copy Map objects.

The [Symbol.iterator]() method of Map instances implements the iterable protocol and allows Map objects to be consumed by most syntaxes expecting iterables, such as the spread syntax and for...of loops. It returns a map iterator object that yields the key-value pairs of the map in insertion order.

The forEach() method of Map instances executes a provided function once per each key/value pair in this map, in insertion order.

The has() method of Map instances returns a boolean indicating whether an element with the specified key exists in this map or not.

The Math.clz32() static method returns the number of leading zero bits in the 32-bit binary representation of a number.

The Promise.all() static method takes an iterable of promises as input and returns a single Promise. This returned promise fulfills when all of the input's promises fulfill (including when an empty iterable is passed), with an array of the fulfillment values. It rejects when any of the input's promises rejects, with this first rejection reason.

The Math.LN10 static data property represents the natural logarithm of 10, approximately 2.302.