"Object.assign" in add function clear the previous stack middlewares

[GeinerGV]

The function doesn't always work, because stack property is an Array

function add(method, ...handle) {
    for (let i = 0; i < handle.length; i += 1) {
      if (handle[i].stack) Object.assign(this.stack, handle[i].stack);
      else this.stack.push({ handle: handle[i], method });
    }
  }

a temporal solution: Change it with a forEach and push

function add(method, ...handle) {
    for (let i = 0; i < handle.length; i += 1) {
      if (handle[i].stack) handle[i].stack.forEach(objMiddle){this.stack.push(objMiddle);}
      else this.stack.push({ handle: handle[i], method });
    }
  }

[hoangvvo]

Ooops, that is right. I was thinking that Array was also an Object (which is true), but doing Object.assign would replace the target Array since the target and source share the same indexes (0,1,2,...).

Could you do a PR?

[hoangvvo]

@GeinerGV Are you plannig to do a PR? If not, I will open one. Thanks!