# Contributors by commit history https://github.com/mdn/content/commits/main/files/en-us/web/javascript/reference/global_objects/bigint64array/index.md # Original Wiki contributors fscholz sideshow...

The find() method of TypedArray instances returns the first element in the provided typed array that satisfies the provided testing function. If no values satisfy the testing function, undefined is returned. This method has the same algorithm as Array.prototype.find().

The TypedArray.BYTES_PER_ELEMENT static data property represents the size in bytes of each element in a typed array.

The lastIndexOf() method of TypedArray instances returns the last index at which a given element can be found in the typed array, or -1 if it is not present. The typed array is searched backwards, starting at fromIndex. This method has the same algorithm as Array.prototype.lastIndexOf().

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 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 Intl.ListFormat() constructor creates Intl.ListFormat objects.

The getMonth() method of Date instances returns the month for this date according to local time, as a zero-based value (where zero indicates the first month of the year).

The getHourCycles() method of Intl.Locale instances returns a list of one or more unique hour cycle identifiers for this locale.