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							- 'use strict';
 
- require('../../modules/es.map');
 
- require('../../modules/esnext.map.group-by');
 
- var call = require('../../internals/function-call');
 
- var isCallable = require('../../internals/is-callable');
 
- var path = require('../../internals/path');
 
- var Map = path.Map;
 
- var mapGroupBy = Map.groupBy;
 
- module.exports = function groupBy(source, iterable, keyDerivative) {
 
-   return call(mapGroupBy, isCallable(this) ? this : Map, source, iterable, keyDerivative);
 
- };
 
 
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