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41 lines
1.3 KiB
41 lines
1.3 KiB
var checkGlobal = require('./_checkGlobal');
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/** Used to determine if values are of the language type `Object`. */
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var objectTypes = {
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'function': true,
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'object': true
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};
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/** Detect free variable `exports`. */
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var freeExports = (objectTypes[typeof exports] && exports && !exports.nodeType)
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? exports
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: undefined;
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/** Detect free variable `module`. */
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var freeModule = (objectTypes[typeof module] && module && !module.nodeType)
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? module
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: undefined;
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/** Detect free variable `global` from Node.js. */
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var freeGlobal = checkGlobal(freeExports && freeModule && typeof global == 'object' && global);
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/** Detect free variable `self`. */
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var freeSelf = checkGlobal(objectTypes[typeof self] && self);
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/** Detect free variable `window`. */
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var freeWindow = checkGlobal(objectTypes[typeof window] && window);
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/** Detect `this` as the global object. */
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var thisGlobal = checkGlobal(objectTypes[typeof this] && this);
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/**
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* Used as a reference to the global object.
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*
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* The `this` value is used if it's the global object to avoid Greasemonkey's
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* restricted `window` object, otherwise the `window` object is used.
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*/
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var root = freeGlobal ||
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((freeWindow !== (thisGlobal && thisGlobal.window)) && freeWindow) ||
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freeSelf || thisGlobal || Function('return this')();
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module.exports = root;
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