var toObject = require('./toObject');

/**
 * Creates a base function for `_.forIn` or `_.forInRight`.
 *
 * @private
 * @param {boolean} [fromRight] Specify iterating from right to left.
 * @returns {Function} Returns the new base function.
 */
function createBaseFor(fromRight) {
  return function(object, iteratee, keysFunc) {
    var iterable = toObject(object),
        props = keysFunc(object),
        length = props.length,
        index = fromRight ? length : -1;

    while ((fromRight ? index-- : ++index < length)) {
      var key = props[index];
      if (iteratee(iterable[key], key, iterable) === false) {
        break;
      }
    }
    return object;
  };
}

module.exports = createBaseFor;