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.

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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 Object.defineProperty() static method defines a new property directly on an object, or modifies an existing property on an object, and returns the object.

The Object.entries() static method returns an array of a given object's own enumerable string-keyed property key-value pairs.

The Object.values() static method returns an array of a given object's own enumerable string-keyed property values.

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

The delete() method of Map instances removes the specified element from this map by key.

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

The cx attribute defines the x-axis coordinate of a center point.