JavaScript analog of EachSlice from Ruby

Array.eachSlice

Array.prototype.eachSlice = function(size=1) {
    return Array(Math.ceil(this.length / size))
		.fill()
       		.map(( _, idx) => {
            return this.slice(idx * size, (1 + idx) * size)
        })
}

arr = [1,2,3,4,5,6,7,8,9,10,11,12,13]
arr.eachSlice(3); // => [ [ 1, 2, 3 ], [ 4, 5, 6 ], [ 7, 8, 9 ], [ 10, 11, 12 ], [ 13 ] ]