Abstract: An internally consistent system implementing object-oriented programming constructs in ECMAScript is described. First, a function, rather than the ECMAScript new keyword, is used to initiate new instance creation. The instance creation function is assigned to a non-Function instance rather than an instance of Function as required for use of new. Instances with attached instance creation functions serve as “type proxy” objects and replace the Function instances normally used as types. Since the type proxies and prototype chains created and maintained by the invention are instances of normal objects, rather than instances of Function as required by standard ECMAScript, this approach allows native ECMAScript lookup semantics to be leveraged while supporting inheritance of both state and behavior for instances and types to any level desired.