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var baseCallback = require('./baseCallback'),
baseReduce = require('./baseReduce'),
isArray = require('../lang/isArray');
/**
* Creates a function for `_.reduce` or `_.reduceRight`.
*
* @private
* @param {Function} arrayFunc The function to iterate over an array.
* @param {Function} eachFunc The function to iterate over a collection.
* @returns {Function} Returns the new each function.
*/
function createReduce(arrayFunc, eachFunc) {
return function(collection, iteratee, accumulator, thisArg) {
var initFromArray = arguments.length < 3;
return (typeof iteratee == 'function' && thisArg === undefined && isArray(collection))
? arrayFunc(collection, iteratee, accumulator, initFromArray)
: baseReduce(collection, baseCallback(iteratee, thisArg, 4), accumulator, initFromArray, eachFunc);
};
}
module.exports = createReduce;
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