The export declaration is used to export values from a JavaScript module. Exported values can then be imported into other programs with the import declaration or dynamic import. The value of an imported binding is subject to change in the module that exports it — when a module updates the value of a binding that it exports, the update will be visible in its imported value.

The lighting-color attribute defines the color of the light source for lighting filter primitives.

The __lookupSetter__() method of Object instances returns the function bound as a setter to the specified property.

The JSON.stringify() static method converts a JavaScript value to a JSON string, optionally replacing values if a replacer function is specified or optionally including only the specified properties if a replacer array is specified.

The @@unscopables data property of Array.prototype is shared by all Array instances. It contains property names that were not included in the ECMAScript standard prior to the ES2015 version and that are ignored for with statement-binding purposes.

The hasOwnProperty() method of Object instances returns a boolean indicating whether this object has the specified property as its own property (as opposed to inheriting it).

The call() method of Function instances calls this function with a given this value and arguments provided individually.

The findLastIndex() method of Array instances iterates the array in reverse order and returns the index of the first element that satisfies the provided testing function. If no elements satisfy the testing function, -1 is returned.

The Math.round() static method returns the value of a number rounded to the nearest integer.

The Math.asinh() static method returns the inverse hyperbolic sine of a number. That is,