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Remove UMD an make exenv a pure CommonJS module. #9

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Remove UMD an make exenv a pure CommonJS module. #9

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40 changes: 14 additions & 26 deletions index.js
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Original file line number Diff line number Diff line change
Expand Up @@ -3,38 +3,26 @@
Based on code that is Copyright 2013-2015, Facebook, Inc.
All rights reserved.
*/
/* global define */

(function () {
'use strict';
'use strict';

var canUseDOM = !!(
typeof window !== 'undefined' &&
window.document &&
window.document.createElement
);
var canUseDOM = !!(
typeof window !== 'undefined' &&
window.document &&
window.document.createElement
);

var ExecutionEnvironment = {
var ExecutionEnvironment = {

canUseDOM: canUseDOM,
canUseDOM: canUseDOM,

canUseWorkers: typeof Worker !== 'undefined',
canUseWorkers: typeof Worker !== 'undefined',

canUseEventListeners:
canUseDOM && !!(window.addEventListener || window.attachEvent),
canUseEventListeners:
canUseDOM && !!(window.addEventListener || window.attachEvent),

canUseViewport: canUseDOM && !!window.screen
canUseViewport: canUseDOM && !!window.screen

};
};

if (typeof define === 'function' && typeof define.amd === 'object' && define.amd) {
define(function () {
return ExecutionEnvironment;
});
} else if (typeof module !== 'undefined' && module.exports) {
module.exports = ExecutionEnvironment;
} else {
window.ExecutionEnvironment = ExecutionEnvironment;
}

}());
module.exports = ExecutionEnvironment;