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/**

* Copyright 2015 The AMP HTML Authors. All Rights Reserved.

*

* Licensed under the Apache License, Version 2.0 (the "License");

* you may not use this file except in compliance with the License.

* You may obtain a copy of the License at

*

* http://www.apache.org/licenses/LICENSE-2.0

*

* Unless required by applicable law or agreed to in writing, software

* distributed under the License is distributed on an "AS-IS" BASIS,

* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.

* See the License for the specific language governing permissions and

* limitations under the License.

*/

import {getMode} from './mode';

/**

* Triggers validation for the current document if there is a script in the

* page that has a "development" attribute.

*

* @param {!Window} win Destination window for the new element.

*/

export function maybeValidate(win) {

if (!getMode().development) {

return;

}

const filename = win.location.href;

if (filename.indexOf('about:') == 0) { // Should only happen in tests.

return;

}

const s = win.document.createElement('script');

// TODO(@cramforce): Introduce a switch to locally built version for local

// development.

s.src = 'https://cdn.ampproject.org/v0/validator.js';

s.onload = () => {

win.document.head.removeChild(s);

amp.validator.validateUrlAndLog(filename, win.document);

};

win.document.head.appendChild(s);

}