I am getting an error when I try to load my wasm and js

[Shawn Riordan]

1. I get this error when trying to load the module:
2. 
   
3. BindingError {name: "BindingError", message: "No dynCall invoker for signature: ii", stack: "BindingError: No dynCall invoker for signature: ii…meCallbacks (http://localhost:8000/foo.js:1:7729)"}
4. name: "BindingError"
5. message: "No dynCall invoker for signature: ii"
6. stack: "BindingError: No dynCall invoker for signature: ii↵ at BindingError.<anonymous> (http://localhost:8000/foo.js:1:12836)↵ at new BindingError (eval at createNamedFunction (http://localhost:8000/foo.js:1:12545), <anonymous>:4:34)↵ at throwBindingError (http://localhost:8000/foo.js:1:13277)↵ at embind__requireFunction (http://localhost:8000/foo.js:1:29330)↵ at __embind_register_class (http://localhost:8000/foo.js:1:30314)↵ at wasm-function[45]:0x2715↵ at wasm-function[88]:0x36a8↵ at Module.___wasm_call_ctors (http://localhost:8000/foo.js:1:46999)↵ at func (http://localhost:8000/foo.js:1:11692)↵ at callRuntimeCallbacks (http://localhost:8000/foo.js:1:7729)"
7. 
   
8. my code is:
9. 
   
10. #include <math.h>
    #include <emscripten.h>
    #include <emscripten/bind.h>
    #include <emscripten/html5.h>
    
    using namespace emscripten;
    
    class FOOWASMInterface
    {
    public:
       FOOWASMInterface() { }
    
       float bar(float value, bool up)
       {
          if(up)
             return ceil(value);
          else
             return floor(value);
       }
    };
    
    EMSCRIPTEN_BINDINGS(FOOModule) {
       class_<FOOWASMInterface>("FOOWASMInterface")
          .constructor<>()
          .function("bar", &FOOWASMInterface::bar)
          ;
    }
    
    
    
    
11. and my compile instruction is:
12. 
    
13. em++ -O3 -std=c++14 -s ERROR_ON_UNDEFINED_SYMBOLS=0 foo_bindings.cpp --bind -s WASM=1 -o foo.js
    
14. 
    
15. and my javascript is:
16. 
    
17. Module = {
       onRuntimeInitialized: function () {
          var FOOLib = new Module.FOOWASMInterface();
    
          var value = FOOLib.bar(5.4, true);
          console.log('5.4 ceil' + value);
          value = FOOLib.bar(5.4, false);
          console.log('5.4 floor' + value);
       }
    };
    
    
    What mistake am I making?