salix/front/core/components/debug-info/index.js

import ngModule from '../../module';
import Component from '../../lib/component';
import './style.scss';

/**
 * Floating box displaying debugging information.
 * Enabled only in development environment.
 */
export default class Controller extends Component {
    constructor($element, $) {
        super($element, $);
        this.env = process.env.NODE_ENV || 'development';

        if (this.env == 'development')
            this.interval = setInterval(() => $.$digest(), 2000);
        else
            $element[0].style.display = 'none';

        $element[0].addEventListener('mouseover',
            () => this.classList.toggle('right'));
    }

    $onDestroy() {
        clearInterval(this.interval);
    }
}

ngModule.vnComponent('vnDebugInfo', {
    template: require('./index.html'),
    controller: Controller
});