module Error: sig .. end
Javascript errors.
type t = {
   | 
message : string; | 
   | 
filename : string option; | 
   | 
line : string option; | 
   | 
lineno : int; | 
   | 
colno : int; | 
}
exception Message of t
exception RuntimeDestroyed
Raised after a call to destroy_runtime when 
	a new closure is created (lambda method) or when
	a JS script call a closure.
exception InvalidRuntime
Raised when values from different runtimes are mixed together.
exception InvalidType
Raised when a value of some JS type is used as a value
	of another type.