exampleJSExport.cpp

class [[cheerp::jsexport]] CppClass
{
public:
    CppClass(int n, bool flag)
        { /*initialization*/ }
    void processNum(int k)
        {/* ... */}
    bool isValid()
        {/* ... */ return true;}
    static void staticMethod()
        {client::console.log("it works!");}
private:
    void somePrivateMethod()
        {/* ... */}
    //some fields
};

usageJSExport.js

var instance = new CppClass(42);

instance.processNum(100);
if (instance.isValid())
    instance.processNum(1000);

CppClass.staticMethod();
//it works!