js redux compose

js

const f1 = () => console.log('f', 1)
const f2 = () => console.log('f', 2)
const f3 = () => console.log('f', 3)
const f4 = () => console.log('f', 4)
const f5 = () => console.log('f', 5)

/**
 * 合并单参数方法
 */
function compose(...funcs) {
  if (funcs.length === 0) {
    return arg => arg
  }

  if (funcs.length === 1) {
    return funcs[0]
  }

  return funcs.reduce((a, b) => (...args) => a(b(...args)))
}

let c = compose(f1, f2, f3, f4, f5)
c()