_createAggregator.js•789 B
var arrayAggregator = require('./_arrayAggregator'),
baseAggregator = require('./_baseAggregator'),
baseIteratee = require('./_baseIteratee'),
isArray = require('./isArray');
/**
* Creates a function like `_.groupBy`.
*
* @private
* @param {Function} setter The function to set accumulator values.
* @param {Function} [initializer] The accumulator object initializer.
* @returns {Function} Returns the new aggregator function.
*/
function createAggregator(setter, initializer) {
return function(collection, iteratee) {
var func = isArray(collection) ? arrayAggregator : baseAggregator,
accumulator = initializer ? initializer() : {};
return func(collection, setter, baseIteratee(iteratee, 2), accumulator);
};
}
module.exports = createAggregator;