generate full combination of an array in js generator

full-combination.js

(()=>{
    function *fullCombination(array) {
        function *gen(array, prefix) {
            if (array.length === 0) {
                yield prefix;
            } else {
                    yield*gen(array.slice(1), [...prefix, array[0]]);
                    yield*gen(array.slice(1), [...prefix]);
            }
        }

        yield*gen(array, []);
    }

    for(var item of fullCombination([1,2,3,4,5])){
        console.log(item);
    }
}
)();