function baseFindIndex(array, predicate, fromRight) {
	  var length = array.length,
	      index = fromRight ? length : -1;

	  while ((fromRight ? index-- : ++index < length)) {
	    if (predicate(array[index], index, array)) {
	      return index;
	    }
	  }
	  return -1;
	}
The base implementation of `_.findIndex` and `_.findLastIndex` without
support for iteratee shorthands.

@private
@param {Array} array The array to search.
@param {Function} predicate The function invoked per iteration.
@param {boolean} [fromRight] Specify iterating from right to left.
@returns {number} Returns the index of the matched value, else `-1`.