old_contents: import { curry, toPairs, pipe, map, adjust, fromPairs } from 'ramda';
  
  /**
   * Creates a new object with the own properties of the provided object, but the
   * keys renamed according to logic of renaming function.
   *
   * Keep in mind that in the case of keys conflict is behaviour undefined and
   * the result may vary between various JS engines!
   *
   * @func renameKeysWith
   * @memberOf RA
   * @since {@link https://char0n.github.io/ramda-adjunct/1.5.0|v1.5.0}
   * @category Object
   * @sig (a -> b) -> {a: *} -> {b: *}
   * @param {Function} fn Function that renames the keys
   * @param {!Object} obj Provided object
   * @return {!Object} New object with renamed keys
   * @see {@link https://github.com/ramda/ramda/wiki/Cookbook#rename-keys-of-an-object-by-a-function|Ramda Cookbook}, {@link RA.renameKeys|renameKeys}
   * @example
   *
   * RA.renameKeysWith(R.concat('a'), { A: 1, B: 2, C: 3 }) //=> { aA: 1, aB: 2, aC: 3 }
   */
  const renameKeysWith = curry((fn, obj) =>
    pipe(
      toPairs,
      map(adjust(fn, 0)),
      fromPairs
    )(obj)
  );
  
  export default renameKeysWith;
  
new_contents: import { curry, toPairs, pipe, map, over, lensIndex, fromPairs } from 'ramda';
  
  /**
   * Creates a new object with the own properties of the provided object, but the
   * keys renamed according to logic of renaming function.
   *
   * Keep in mind that in the case of keys conflict is behaviour undefined and
   * the result may vary between various JS engines!
   *
   * @func renameKeysWith
   * @memberOf RA
   * @since {@link https://char0n.github.io/ramda-adjunct/1.5.0|v1.5.0}
   * @category Object
   * @sig (a -> b) -> {a: *} -> {b: *}
   * @param {Function} fn Function that renames the keys
   * @param {!Object} obj Provided object
   * @return {!Object} New object with renamed keys
   * @see {@link https://github.com/ramda/ramda/wiki/Cookbook#rename-keys-of-an-object-by-a-function|Ramda Cookbook}, {@link RA.renameKeys|renameKeys}
   * @example
   *
   * RA.renameKeysWith(R.concat('a'), { A: 1, B: 2, C: 3 }) //=> { aA: 1, aB: 2, aC: 3 }
   */
  const renameKeysWith = curry((fn, obj) =>
    pipe(
      toPairs,
      map(over(lensIndex(0), fn)),
      fromPairs
    )(obj)
  );
  
  export default renameKeysWith;
  
subject: use lenses instead of adjust