hy-push-state/doc/source/webcomponent/html-import.md

Turn web sites into web apps

# src / webcomponent / html-import.js
Copyright (c) 2017 Florian Klampfer <https://qwtel.com/>

This program is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.

This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
GNU General Public License for more details.

You should have received a copy of the GNU General Public License
along with this program.  If not, see <http://www.gnu.org/licenses/>.


```js

import { customElementMixin, CustomElement } from 'hy-component/src/custom-element';
import { sGetTemplate } from 'hy-component/src/symbols';

import { pushStateMixin } from '../mixin';

if ('customElements' in window) {
  customElements.define(
    'hy-push-state',
    class extends customElementMixin(pushStateMixin(CustomElement)) {
      static get observedAttributes() { return this.getObservedAttributes(); }

      [sGetTemplate]() { return null; }
    },
  );
} else if (process.env.DEBUG) {
  console.warn('Couldn\'t register hy-drawer component. Did you forget to include a WebComponents polyfill?');
}
```