读的比拟好的一篇文章:

https://www.jianshu.com/p/c9d...

export default 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)))}

compose(f1, f2, f3, f4)(args)

执行程序是 : f1(f2(f3(f4(args))))