The forEach() method of Set instances executes a provided function once for each value in this set, in insertion order.

The register() method of FinalizationRegistry instances registers an value with this FinalizationRegistry so that if the value is garbage-collected, the registry's callback may get called.

The intersection() method of Set instances takes a set and returns a new set containing elements in both this set and the given set.

The keys() method of Map instances returns a new map iterator object that contains the keys for each element in this map in insertion order.

The unregister() method of FinalizationRegistry instances unregisters a target value from this FinalizationRegistry.

The Math.SQRT2 static data property represents the square root of 2, approximately 1.414.

The BigInt64Array typed array represents an array of 64-bit signed integers in the platform byte order. If control over byte order is needed, use DataView instead. The contents are initialized to 0n. Once established, you can reference elements in the array using the object's methods, or using standard array index syntax (that is, using bracket notation).

The Function object provides methods for functions. In JavaScript, every function is actually a Function object.

The Uint8ClampedArray typed array represents an array of 8-bit unsigned integers clamped to 0–255. The contents are initialized to 0. Once established, you can reference elements in the array using the object's methods, or using standard array index syntax (that is, using bracket notation).

The AggregateError() constructor creates AggregateError objects.