javascript partition similar to clojure partition

partition.js

function partition(input, step,pad){
    const output = [];

    for (let i = 0; i < input.length; i += pad){
        const part = input.slice(i, i + step)
        if(part.length >=step )
            output[output.length] = part
    }

    return output;
}

//> partition([2,3,4,5,6],2,1)
//[ [ 2, 3 ], [ 3, 4 ], [ 4, 5 ], [ 5, 6 ] ]