为巨大的深度嵌套对象中的每个对象添加新的键/值

Question

I have a huge object, with almost 50k lines. I need to add in each object new key with the current path of the node

Example:

let obj = {
  "title": "RESSONÂNCIA MAGNÉTICA DA COLUNA LOMBAR",
  "data": [{
    "title": "Método:",
    "data": [{
        "title": "Procedimento 1",
        "data": [{
            "title": "CONTRASTE"
          },
          {
            "title": "CONTRASTE 2"
          }
        ]
      },
      {
        "title": "Procedimento 2",
        "data": [{
            "title": "CONTRASTE 3"
          },
          {
            "title": "CONTRASTE 4"
          }
        ]
      }
    ]
  }]
}

And I need to change my object to return this:

obj = {
  "path": "$",
  "title": "RESSONÂNCIA MAGNÉTICA DA COLUNA LOMBAR",
  "data": [{
    "path": "$.data.0",
    "title": "Método:",
    "data": [{
        "path": "$.data.0.data.0",
        "title": "Procedimento 1",
        "data": [{
            "path": "$.data.0.data.0.data.0",
            "title": "CONTRASTE"
          },
          {
            "path": "$.data.0.data.0.data.1",
            "title": "CONTRASTE 2"
          }
        ]
      },
      {
        "path": "$.data.0.data.1",
        "title": "Procedimento 2",
        "data": [{
            "path": "$.data.0.data.1.data.0",
            "title": "CONTRASTE 3"
          },
          {
            "path": "$.data.0.data.1.data.1",
            "title": "CONTRASTE 4"
          }
        ]
      }
    ]
  }]
}

If you notice, i added the key path inside each object for key data , with the current path of the node. This is what I need.

All my object are much bigger then this example, with much more nested objects

Answer 1

 const data = { title: "RESSONÂNCIA MAGNÉTICA DA COLUNA LOMBAR", type: "template", data: [ { title: "Método:", type: "top-level-component", data: [ { title: "Procedimento", type: "navigation", normal: "CONTRASTE", checked: true, data: [ { type: "single-selection", title: "CONTRASTE", }, { type: "single-selection", title: "CONTRASTE 2", }, ], }, { title: "Procedimento 2", type: "navigation", normal: "CONTRASTE", checked: false, data: [ { type: "single-selection", title: "CONTRASTE 3", }, { type: "single-selection", title: "CONTRASTE 4", }, ], }, ], }, ], }; function addPathToObj(obj, path) { obj.path = path; for (const [key, value] of Object.entries(obj)) { if (Array.isArray(value)) { value.forEach((item, index) => { addPathToObj(item, `${path}.data.${index}`); }); } } } addPathToObj(data, "$"); console.log(data);

Answer 2

Performant version in case you have to deal with large files

 const data = { "title": "RESSONÂNCIA MAGNÉTICA DA COLUNA LOMBAR", "data": [{ "title": "Método:", "data": [{ "title": "Procedimento 1", "data": [{ "title": "CONTRASTE" }, { "title": "CONTRASTE 2" } ] }, { "title": "Procedimento 2", "data": [{ "title": "CONTRASTE 3" }, { "title": "CONTRASTE 4" } ] } ] }] } function PathUpdate(data, path) { data.path = path; const nd = data.data; if (nd == null) return; for (let i = 0; i < nd.length; i++) { PathUpdate(nd[i], `${path}.data.${i}`); } } console.log("before", { data }); PathUpdate(data, "$"); console.log("after", { data });