Function instantiate 

pub fn instantiate(
    data: Rc<ModuleData>,
    frame: &[Value],
    ctx: &Ctx,
) -> Result<Value, Raised>

Instantiates a compiled module, creating its Module terminal and returning it as a Value::Module.

This assigns the module an identity (fresh Rc) and reserves its ID block so items can be stamped with stable IDs (see materialize_body).

frame provides outer values against ModuleData::frame_names. A length mismatch raises .module_arity. The frame is stored as a flat Frame, though recur may build the terminal directly.