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var arrayMap = require('./_arrayMap'),
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    baseIteratee = require('./_baseIteratee'),
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    baseMap = require('./_baseMap'),
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    baseSortBy = require('./_baseSortBy'),
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    baseUnary = require('./_baseUnary'),
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    compareMultiple = require('./_compareMultiple'),
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    identity = require('./identity');
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/**
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 * The base implementation of `_.orderBy` without param guards.
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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[]|Object[]|string[]} iteratees The iteratees to sort by.
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 * @param {string[]} orders The sort orders of `iteratees`.
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 * @returns {Array} Returns the new sorted array.
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 */
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function baseOrderBy(collection, iteratees, orders) {
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  var index = -1;
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  iteratees = arrayMap(iteratees.length ? iteratees : [identity], baseUnary(baseIteratee));
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  var result = baseMap(collection, function(value, key, collection) {
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    var criteria = arrayMap(iteratees, function(iteratee) {
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      return iteratee(value);
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    });
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    return { 'criteria': criteria, 'index': ++index, 'value': value };
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  });
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  return baseSortBy(result, function(object, other) {
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    return compareMultiple(object, other, orders);
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  });
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}
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module.exports = baseOrderBy;