Full path of a json object

Question

I\'m trying to flatten an object where the keys will be the full path to the leaf node. I can recursively identify which are the leaf nodes but stuck trying to construct the

Answer 1

You can achieve it by using this function:

const obj = {
  one: 1,
  two: {
    three: 3
  },
  four: {
    five: 5,
    six: {
      seven: 7
    },
    eight: 8
  },
  nine: 9
}


const flatObject = (obj, keyPrefix = null) =>
  Object.entries(obj).reduce((acc, [key, val]) => {
    const nextKey = keyPrefix ? `${keyPrefix}.${key}` : key

    if (typeof val !== "object") {
      return {
        ...acc,
        [nextKey]: val
      };
    } else {
      return {
        ...acc,
        ...flatObject(val, nextKey)
      };
    }

  }, {});
  
  console.log(flatObject(obj))