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))))