basant307/AI_Governance_Project

1var arrayEach = require('./_arrayEach'),2    baseCreate = require('./_baseCreate'),3    baseForOwn = require('./_baseForOwn'),4    baseIteratee = require('./_baseIteratee'),5    getPrototype = require('./_getPrototype'),6    isArray = require('./isArray'),7    isBuffer = require('./isBuffer'),8    isFunction = require('./isFunction'),9    isObject = require('./isObject'),10    isTypedArray = require('./isTypedArray');11 12/**13 * An alternative to `_.reduce`; this method transforms `object` to a new14 * `accumulator` object which is the result of running each of its own15 * enumerable string keyed properties thru `iteratee`, with each invocation16 * potentially mutating the `accumulator` object. If `accumulator` is not17 * provided, a new object with the same `[[Prototype]]` will be used. The18 * iteratee is invoked with four arguments: (accumulator, value, key, object).19 * Iteratee functions may exit iteration early by explicitly returning `false`.20 *21 * @static22 * @memberOf _23 * @since 1.3.024 * @category Object25 * @param {Object} object The object to iterate over.26 * @param {Function} [iteratee=_.identity] The function invoked per iteration.27 * @param {*} [accumulator] The custom accumulator value.28 * @returns {*} Returns the accumulated value.29 * @example30 *31 * _.transform([2, 3, 4], function(result, n) {32 *   result.push(n *= n);33 *   return n % 2 == 0;34 * }, []);35 * // => [4, 9]36 *37 * _.transform({ 'a': 1, 'b': 2, 'c': 1 }, function(result, value, key) {38 *   (result[value] || (result[value] = [])).push(key);39 * }, {});40 * // => { '1': ['a', 'c'], '2': ['b'] }41 */42function transform(object, iteratee, accumulator) {43  var isArr = isArray(object),44      isArrLike = isArr || isBuffer(object) || isTypedArray(object);45 46  iteratee = baseIteratee(iteratee, 4);47  if (accumulator == null) {48    var Ctor = object && object.constructor;49    if (isArrLike) {50      accumulator = isArr ? new Ctor : [];51    }52    else if (isObject(object)) {53      accumulator = isFunction(Ctor) ? baseCreate(getPrototype(object)) : {};54    }55    else {56      accumulator = {};57    }58  }59  (isArrLike ? arrayEach : baseForOwn)(object, function(value, index, object) {60    return iteratee(accumulator, value, index, object);61  });62  return accumulator;63}64 65module.exports = transform;66