react-event-injector/dist/es5/flags.js

React way to addEventListener

"use strict";
Object.defineProperty(exports, "__esModule", { value: true });
var passiveSupported = false;
if (typeof window !== 'undefined') {
    try {
        var options = {
            get passive() {
                passiveSupported = true;
                return true;
            }
        };
        window.addEventListener("test", options, options);
        window.removeEventListener("test", options, options);
    }
    catch (err) {
        passiveSupported = false;
    }
}
exports.isPassiveSupported = passiveSupported;