Feature List

Supported Features

• Define an interface (a function with prototype, used as a class)
  • Define property (IDL term: attribute)
    • Define readonly property on object (prototype)
    • Read/write property on object (prototype)
    • Define static property (class property)
  • Define method (IDL term: operation)
    • Method on object (prototype method)
    • Define static method
    • Method overload
    • Define optional parameter in a method
  • Define Constructor(s)
• IDL Callback
  • Declare a callback
  • Use callback inside a method of an interface
• Reference an interface in another interface
  • Reference in same IDL file
  • Reference in another IDL file
  • Order of absence doesn't matter
• ArrayBuffer for big binary data
• Const/C++ enum
  • Declare const values in an interface
  • Extract enum values from a C++ header file, and then expose them in JavaScript automatically
• Dictionary
  • Use as property
  • Use as method parameter
  • Use as method return value
• JavaScript Array
  • Use as property
  • Use as method parameter
  • Use as method return value
• Enum (IDL enum)
  • Enum type converted to std::string in C++
  • Validation of string values in C++
    • Throw TypeError when illegal enum values found as a method argument.
    • No effect on property when assigning to an illegal enum value
• Promise as method return value
• Worker Thread + EventEmitter (+ Promise) model
• All IDL primitive types (incl. DOMString)

Features Already in Our Radar

• Views of ArrayBuffer, used as 1st-class citizen type
• stringifier keyword
• JavaScript exception handling inside C++

Features We Won't Do

• Partial interface/dictionary/etc.