could javascript backend make use of new javascript ES6 module support?

[xigoi]

You can make an ES6 module in Nim easily.
    
    
    proc sayHello() {.exportc.} = echo "hello"
    proc sayGoodbye() {.exportc.} = echo "goodbye"
    
    {.emit: "export { sayHello, sayGoodbye }".}
    
    
    Run