object-destruct.js

function withoutDestruct(config) {
    var opt1 = config.opt1 !== undefined ? config.opt1 : "foo";
    var opt2 = config.opt2 !== undefined ? config.opt2 : "foobar";
    var opt4 = config.opt3 !== undefined ? config.opt3 : "baz";

    console.log(opt1, opt2, opt3);
}

withoutDestruct({opt1: "hello ", opt2: "world", opt3: "!"}); // > "hello world!"

function withDestruct({ opt1 = "foo", opt2 = "foobar", opt3 = "baz"}) {
    console.log(opt1, opt2, opt3)
}

withDestruct({ opt1: "hello ", opt2: "world", opt3: "!" }); // > "hello world!"