Generated patch incorrect for Array replacement

[tamalsaha]

Thanks for this handy library. I am trying to generate JSON patch . Here is a case that produces buggy patch:

src = {
  "spec": {
    "loadBalancerSourceRanges": [
      "192.101.0.0/16",
      "192.0.0.0/24"
    ]
  }
}

dst = {
  "spec": {
    "loadBalancerSourceRanges": [
      "192.101.0.0/24"
    ]
  }
}

The generated patch is:

[
  {
    "op": "remove",
    "path": "/spec/loadBalancerSourceRanges/0"
  },  
  {
    "op": "remove",
    "path": "/spec/loadBalancerSourceRanges/1"
  },
  {
    "op": "add",
    "path": "/spec/loadBalancerSourceRanges/0",
    "value": "192.101.0.0/24"
  }
]

This results in an error. The problem seems to be that index 1 should be removed before index 0. If I reverse the order the generated patch works.

I tested patch generation using https://github.com/stefankoegl/python-json-patch library . This produces a valid patch:

[{"path": "/spec/loadBalancerSourceRanges/1", "op": "remove"}, {"path": "/spec/loadBalancerSourceRanges/0", "value": "192.101.0.0/24", "op": "replace"}]

https://gist.github.com/tamalsaha/e8b313aec8f8d8191bc01ba504247e30

I also tested against a node.js library here: https://json8.github.io/patch/demos/apply/ . I get the same issue.

I wonder if you can fix this or give us pointers on how to fix this.