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/** * The base implementation of methods like `_.findKey` and `_.findLastKey`, * without support for iteratee shorthands, which iterates over `collection` * using `eachFunc`. * * @private * @param {Array|Object} collection The collection to inspect. * @param {Function} predicate The function invoked per iteration. * @param {Function} eachFunc The function to iterate over `collection`. * @returns {*} Returns the found element or its key, else `undefined`. */function baseFindKey(collection, predicate, eachFunc) {  var result;  eachFunc(collection, function(value, key, collection) {    if (predicate(value, key, collection)) {      result = key;      return false;    }  });  return result;}
module.exports = baseFindKey;