react-lazily-render-scroll-parent/dist/es5/utils/eventListenerOptions.js

Lazily render react components

'use strict';

Object.defineProperty(exports, "__esModule", {
  value: true
});
var isPassiveListenerSupported = function isPassiveListenerSupported() {
  var supported = false;

  try {
    var opts = Object.defineProperty({}, 'passive', {
      get: function get() {
        supported = true;
      }
    });

    window.addEventListener('test', null, opts);
    window.removeEventListener('test', null, opts);
  } catch (e) {}

  return supported;
};

exports.default = isPassiveListenerSupported() ? {
  passive: true
} : undefined;