Data modification, set nested object to one level up and remove key [closed]

Question

Need to flat or remove platform key from nested object like this, platform key will be same for every object

climb up nested object properties to one level up and remove key value(platform) to make data consistent, as platform key is different for nested objects

{
  option1: {
    platform : {
      key1:value1,
      key2:value2,
      key3:value3
    }
  },
  option2: {
    platform : {
      key1:value1,
      key2:value2,
      key3:value3
    }
  },
  option3: {
    platform : {
      key1:value1,
      key2:value2,
      key3:value3
    }
  }
}

Expected output is like

{
  option1: {
      key1:value1,
      key2:value2,
      key3:value3
  },
  option2: {
      key1:value1,
      key2:value2,
      key3:value3
  },
  option3: {
      key1:value1,
      key2:value2,
      key3:value3
  }
}

I tried approach using for loop and if condition, but that seems expensive operations. I need a more simpler way to do that.

Answer 1

const obj = {"option1":{"platform":{"key1":"value1","key2":"value2","key3":"value3"}},"option2":{"platform":{"key1":"value1","key2":"value2","key3":"value3"}},"option3":{"platform":{"key1":"value1","key2":"value2","key3":"value3"}}};
Object.keys(obj).forEach(k=>obj[k]=obj[k].platform);
console.log(obj);