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Filename : evolve.js
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import _curry2 from "./internal/_curry2.js";
/**
 * Creates a new object by recursively evolving a shallow copy of `object`,
 * according to the `transformation` functions. All non-primitive properties
 * are copied by reference.
 *
 * A `transformation` function will not be invoked if its corresponding key
 * does not exist in the evolved object.
 *
 * @func
 * @memberOf R
 * @since v0.9.0
 * @category Object
 * @sig {k: (v -> v)} -> {k: v} -> {k: v}
 * @param {Object} transformations The object specifying transformation functions to apply
 *        to the object.
 * @param {Object} object The object to be transformed.
 * @return {Object} The transformed object.
 * @example
 *
 *      const tomato = {firstName: '  Tomato ', data: {elapsed: 100, remaining: 1400}, id:123};
 *      const transformations = {
 *        firstName: R.trim,
 *        lastName: R.trim, // Will not get invoked.
 *        data: {elapsed: R.add(1), remaining: R.add(-1)}
 *      };
 *      R.evolve(transformations, tomato); //=> {firstName: 'Tomato', data: {elapsed: 101, remaining: 1399}, id:123}
 */

var evolve =
/*#__PURE__*/
_curry2(function evolve(transformations, object) {
  var result = object instanceof Array ? [] : {};
  var transformation, key, type;

  for (key in object) {
    transformation = transformations[key];
    type = typeof transformation;
    result[key] = type === 'function' ? transformation(object[key]) : transformation && type === 'object' ? evolve(transformation, object[key]) : object[key];
  }

  return result;
});

export default evolve;