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parameterMystery6

Language/Type: JavaScript parameter mystery reference semantics
Author: Melissa Hovik (on 2016/09/25)

Assume the following functions are defined: 

function main() {
    let zero = "three";
    let one = "two"
    let two = zero;
    let three = two;
    
    mystery(zero, one, "0");
    mystery(zero, zero, "seven");
    mystery(one, two, three);
    mystery(one, zero, "some" + one);
}

function mystery(nil, none, zilch) {
    let zero = nil;
    console.log(nil + " + " + none + " = " + zero + " + " + zilch + ".");
}
What console output would result from calling main?
mystery(zero, one, "0");
mystery(zero, zero, "seven");
mystery(one, two, three);
mystery(one, zero, "some" + one);

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