Useful JavaScript base classes for efficient and quick solutions to common problems.

Return an array of an object's inherited enumerable property names.

Test if an object's own or inherited property has a data descriptor.

Test if an object's own or inherited property is non-configurable.

Return an array of an object's own and inherited non-enumerable property names.

Return an array of an object's own and inherited writable property names.

Test if an object has a specified method name, either own or inherited.

Return an array of an object's inherited non-enumerable symbol properties.

Return an array of an object's own and inherited writable symbol properties.

Test if an object's own or inherited property is write-only.

Test if an object's own or inherited property is non-enumerable.

Test if an object's own or inherited property has an accessor descriptor.

Test if an object's own or inherited property is enumerable.

Invoke a function for each own and inherited enumerable property of an object.

Return an array of an object's own and inherited enumerable property key-value pairs.

Return an object's inherited property descriptors.

Test if an object's own and inherited property is readable and writable.

Return the common own and inherited property names of two or more objects.

Return an array of an object's own and inherited enumerable property names.

Return an array of an object's inherited writable property names.