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                                                                                                                                                                                     ÿØÿà JFIF 

  
 
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                                                                                                                                                                                     'use strict';

var slice = Array.prototype.slice;
var isArgs = require('./isArguments');

var origKeys = Object.keys;
var keysShim = origKeys ? function keys(o) { return origKeys(o); } : require('./implementation');

var originalKeys = Object.keys;

keysShim.shim = function shimObjectKeys() {
	if (Object.keys) {
		var keysWorksWithArguments = (function () {
			// Safari 5.0 bug
			var args = Object.keys(arguments);
			return args && args.length === arguments.length;
		}(1, 2));
		if (!keysWorksWithArguments) {
			Object.keys = function keys(object) { // eslint-disable-line func-name-matching
				if (isArgs(object)) {
					return originalKeys(slice.call(object));
				}
				return originalKeys(object);
			};
		}
	} else {
		Object.keys = keysShim;
	}
	return Object.keys || keysShim;
};

module.exports = keysShim;