ember-native-dom-helpers/addon-test-support/-private/get-element.js

Test helpers for your integration tests that fire native events

import settings from '../settings';

/*
  @method getElement
  @param {String|HTMLElement} selectorOrElement
  @param {HTMLElement} contextEl to query within, query from its contained DOM
  @return HTMLElement
  @private
*/
export default function getElement(selectorOrElement = '', contextEl) {
  if (selectorOrElement instanceof Window || 
      selectorOrElement instanceof Document || 
      selectorOrElement instanceof HTMLElement || 
      selectorOrElement instanceof SVGElement) {
    return selectorOrElement;
  }
  let result;
  if (contextEl instanceof HTMLElement) {
    result = contextEl.querySelector(selectorOrElement);
  } else {
    result = document.querySelector(`${settings.rootElement} ${selectorOrElement}`);
  }
  return result;
}