Immutable object key renaming using Lodash

renameKeyName.js

export function renameKeyName(obj, oldName, newName) {
  const clone = cloneDeep(obj);
  const keyVal = clone[oldName];

  delete clone[oldName];
  clone[newName] = keyVal;

  return clone;
}

A shallow clone is sufficient for renaming of keys at top level. That can be achieved with Spread operator, if available:

export function renameKeyName(obj, oldName, newName) {
  const { [newName]: value, ...remainingObj } = obj;
  return {
    ...remainingObj,
    [newName]: value,
  };
};

export function renameKeyName(obj, oldName, newName) {
  const { [newName]: value, ...remainingObj } = obj;
  return {
    ...remainingObj,
    [newName]: value,
  };
};

Thanks for sharing but found there is a mistake where newName should be oldName instead.

export function renameKeyName(obj, oldName, newName) {
  const { [oldName]: value, ...remainingObj } = obj;
  return {
    ...remainingObj,
    [newName]: value,
  };
};