Javascript: function.toString() not working

Using Javascript in an QML application and retrieving the function code as string stopped working:

function test(parameter) {
    console.log("Something to do!");
}
...
function otherFunction(otherParam) {
    console.log("Output: "+test.toString());
}

All this does is to print the following:

"Output: function() { [code] }"

instead of the desired string:

"Output: function() { console.log("Something to do!"); }"

According to 5th edition of ECMA-262 , section 15.3.4.2, Function.prototype.toString() should return an implementation-defined rendition having a syntax of FunctionDeclaration. So perhaps Qt's JS engine here exhibits nonstandard behavior (c.f. Stack Overflow answer ).