var baseEach = require('./_baseEach');
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/**
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* Aggregates elements of `collection` on `accumulator` with keys transformed
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* by `iteratee` and values set by `setter`.
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*
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* @private
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* @param {Array|Object} collection The collection to iterate over.
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* @param {Function} setter The function to set `accumulator` values.
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* @param {Function} iteratee The iteratee to transform keys.
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* @param {Object} accumulator The initial aggregated object.
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* @returns {Function} Returns `accumulator`.
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*/
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function baseAggregator(collection, setter, iteratee, accumulator) {
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baseEach(collection, function(value, key, collection) {
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setter(accumulator, value, iteratee(value), collection);
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});
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return accumulator;
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}
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module.exports = baseAggregator;
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