const pipe = (fn,...fns) => (...args) => fns.reduce( (acc, f) => f(acc), fn(...args)); const compose = (...fns) => pipe(...fns.reverse()); const map = f => h => (acc, a) => h(acc, f(a)) const filter = f => h => (acc, a) => f(a) ? h(acc, a) : acc console.log( [1,2,3,4,5,6,7,8,9,10] .reduce( compose( map(x => x + 1) , filter(x => x % 2 == 1) )((a, b) => a.concat(b)) , []) );