# Contributors by commit history https://github.com/mdn/content/commits/main/files/en-us/web/javascript/reference/operators/index.md # Original Wiki contributors Aljullu chharvey Avivhdr fscholz wb...

The Object.preventExtensions() static method prevents new properties from ever being added to an object (i.e., prevents future extensions to the object). It also prevents the object's prototype from being re-assigned.

The Reflect.getPrototypeOf() static method is like Object.getPrototypeOf(). It returns the prototype of the specified object.

The handler.setPrototypeOf() method is a trap for the [[SetPrototypeOf]] object internal method, which is used by operations such as Object.setPrototypeOf().

The resizable accessor property of ArrayBuffer instances returns whether this array buffer can be resized or not.

The use() method of AsyncDisposableStack instances registers a value that implements the async disposable protocol to the stack.

# Contributors by commit history https://github.com/mdn/content/commits/main/files/en-us/web/javascript/guide/meta_programming/index.md # Original Wiki contributors Zearin_Galaurum olexp chrisdavid...

The toArray() method of Iterator instances creates a new Array instance populated with the elements yielded from the iterator.

The filter() method of Iterator instances returns a new iterator helper object that yields only those elements of the iterator for which the provided callback function returns true.

The reduce() method of Iterator instances is similar to Array.prototype.reduce: it executes a user-supplied "reducer" callback function on each element produced by the iterator, passing in the return value from the calculation on the preceding element. The final result of running the reducer across all elements is a single value.