/**

* Copyright 2012-2016, Plotly, Inc.

* All rights reserved.

*

* This source code is licensed under the MIT license found in the

* LICENSE file in the root directory of this source tree.

*/

'use strict';

// more info: http://stackoverflow.com/questions/18531624/isplainobject-thing

module.exports = function isPlainObject(obj) {

// We need to be a little less strict in the `imagetest` container because

// of how async image requests are handled.

//

// N.B. isPlainObject(new Constructor()) will return true in `imagetest`

if(window && window.process && window.process.versions) {

return Object.prototype.toString.call(obj) === '[object Object]';

}

return (

Object.prototype.toString.call(obj) === '[object Object]' &&

Object.getPrototypeOf(obj) === Object.prototype

);

};