Function js::jsapi::NewPromiseObject

pub unsafe extern "C" fn NewPromiseObject(
    cx: *mut JSContext, 
    executor: HandleObject, 
    proto: HandleObject
) -> *mut JSObject

Returns a new instance of the Promise builtin class in the current compartment, with the right slot layout. If a proto is passed, that gets set as the instance's [[Prototype]] instead of the original value of Promise.prototype.