lodash/internal/createFindIndex.js

import baseCallback from './baseCallback';
import baseFindIndex from './baseFindIndex';

/**
 * Creates a `_.findIndex` or `_.findLastIndex` function.
 *
 * @private
 * @param {boolean} [fromRight] Specify iterating from right to left.
 * @returns {Function} Returns the new find function.
 */
function createFindIndex(fromRight) {
  return function(array, predicate, thisArg) {
    if (!(array && array.length)) {
      return -1;
    }
    predicate = baseCallback(predicate, thisArg, 3);
    return baseFindIndex(array, predicate, fromRight);
  };
}

export default createFindIndex;