Ramda to loop over array

Question

Loop may be the wrong term, but it kind of describes what I am attempting. I want to give structure to flat data, but I also need to keep track of the array it came from.

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Answer 1

Something like this?

var output = [{
  "name": "Animal",
  "typechild": [{
    "name": "Chicken",
    "level": 3
  }, {
    "name": "Dog",
    "level": 2
  }]
}, {
  "name": "Food",
  "typechild": [{
    "name": "Chicken",
    "level": 3
  }]
}, {
  "name": "No name",
  "typechild": [{
    "name": "Foo",
    "level": 2
  }, {
    "name": "Baz",
    "level": 2
  }]
}]


let out = {},
  typechild = {},
  k;

const data = [{
  "title": "Test 1",
  "type": [{
    "name": "Animal",
    "level": 1
  }, {
    "name": "Food",
    "level": 1
  }, {
    "name": "Chicken",
    "level": 3
  }]
}, {
  "title": "Test 2",
  "type": [{
    "name": "Foo",
    "level": 2
  }]
}, {
  "title": "Test 3",
  "type": [{
    "name": "Baz",
    "level": 2
  }]
}, {
  "title": "Test 4",
  "type": [{
    "name": "Animal",
    "level": 1
  }, {
    "name": "Dog",
    "level": 2
  }]
}]


data.forEach((node) => {
  k = false;
  typechild[node.title] = [];
  node.type && node.type.forEach((t, i) => {
    if (t.level == 1) {
      k = true;

      !out[t.name] ? out[t.name] = {
        name: t.name,
        typechild: typechild[node.title]
      } : out[t.name].typechild = out[t.name].typechild.concat(typechild[node.title]);
    } else {
      typechild[node.title].push(t);
    }
    if (i == node.type.length - 1 && !k && typechild[node.title].length) {
      out['No name'] = out['No name'] || {
        name: 'No name',
        typechild: []
      };

      out['No name'].typechild = out['No name'].typechild.concat(typechild[node.title]);
    }
  });
});

console.log(JSON.stringify(Object.values(out)));