kotlin-fork/js/js.translator/testData/js-optimizer/redundant-statement-elimination/comma.original.js

var global = "";

function log(x) {
    global += x + ";"
}

function box() {
    var $x = log(1);
    var result = (log(2), $x, log(3));
    if (global != "1;2;3;") return "fail: " + global;
    return "OK";
}