The ArrayBuffer.isView() static method determines whether the passed value is one of the ArrayBuffer views, such as typed array objects or a DataView.

The String.fromCharCode() static method returns a string created from the specified sequence of UTF-16 code units.

The Array.isArray() static method determines whether the passed value is an Array.

The at() method of TypedArray instances takes an integer value and returns the item at that index, allowing for positive and negative integers. Negative integers count back from the last item in the typed array. This method has the same algorithm as Array.prototype.at().

The isWellFormed() method of String values returns a boolean indicating whether this string contains any lone surrogates.

The toWellFormed() method of String values returns a string where all lone surrogates of this string are replaced with the Unicode replacement character U+FFFD.

The toSorted() method of TypedArray instances is the copying version of the sort() method. It returns a new typed array with the elements sorted in ascending order. This method has the same algorithm as Array.prototype.toSorted(), except that it sorts the values numerically instead of as strings by default.

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

The Set() constructor creates Set objects.

The has() method of Set instances returns a boolean indicating whether an element with the specified value exists in this set or not.