kibana-123/src/ui/public/utils/supports.js

Kibana is an open source (Apache Licensed), browser based analytics and search dashboard for Elasticsearch. Kibana is a snap to setup and start using. Kibana strives to be easy to get started with, while also being flexible and powerful, just like Elastic

import _ from 'lodash';

/**
 * just a place to put feature detection checks
 */
export default {
  cssFilters: (function () {
    let e = document.createElement('img');
    let rules = ['webkitFilter', 'mozFilter', 'msFilter', 'filter'];
    let test = 'grayscale(1)';
    rules.forEach(function (rule) { e.style[rule] = test; });

    document.body.appendChild(e);
    let styles = window.getComputedStyle(e);
    let can = _(styles).pick(rules).includes(test);
    document.body.removeChild(e);

    return can;
  }())
};