event-listener-with-options/js/polyfill.js

Polyfill for EventTarget options object support

"use strict";

var _supportsCaptureOption = _interopRequireDefault(require("./supportsCaptureOption"));

function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }

function _typeof(obj) { if (typeof Symbol === "function" && typeof Symbol.iterator === "symbol") { _typeof = function _typeof(obj) { return typeof obj; }; } else { _typeof = function _typeof(obj) { return obj && typeof Symbol === "function" && obj.constructor === Symbol && obj !== Symbol.prototype ? "symbol" : typeof obj; }; } return _typeof(obj); }

if (!(0, _supportsCaptureOption.default)()) {
  var ETp = window.EventTarget ? window.EventTarget.prototype : window.Node.prototype;
  var originalAddEventListener = ETp.addEventListener;
  var originalRemoveEventListener = ETp.removeEventListener;

  ETp.addEventListener = function () {
    if (arguments.length >= 3) {
      var options = arguments[2];

      if (options && _typeof(options) === 'object') {
        arguments[2] = !!options.capture;
      }
    }

    originalAddEventListener.apply(this, arguments);
  };

  ETp.addEventListener.POLYFILLED_OPTIONS_SUPPORT = true;

  ETp.removeEventListener = function () {
    if (arguments.length >= 3) {
      var options = arguments[2];

      if (options && _typeof(options) === 'object') {
        arguments[2] = !!options.capture;
      }
    }

    originalRemoveEventListener.apply(this, arguments);
  };

  ETp.removeEventListener.POLYFILLED_OPTIONS_SUPPORT = true;
}
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