Currently, ReactEventListener is a DOM-specific module but it has a generic sounding name that is confusing to contributors (i.e., confusing to me).

Let's rename it to ReactDOMEventListener. This should be pretty easy – just rename the file and update (and re-sort) the imports.

# @philipp-spiess is working on this task.
var all = ReactTestUtils.scryRenderedDOMComponentsWithClass(
      root,
      className,
    );
    if (all.length !== 1) {
      throw new Error(
        'Did not find exactly one match (found: ' +
          all.length +
          ') ' +
          'for class:' +
          className,
      );
    }
    return all[0];
  },
  /**
   * Finds all instance of components in the rendered tree that are DOM
   * components with the tag name matching `tagName`.
   * @return {array} an array of all the matches.
   */
  scryRenderedDOMComponentsWithTag: function(root, tagName) {
    return ReactTestUtils.findAllInRenderedTree(root, function(inst) {
      return (
        ReactTestUtils.isDOMComponent(inst) &&
        inst.tagName.toUpperCase() === tagName.toUpperCase()
      );
    });
  },
  /**
   * Like scryRenderedDOMComponentsWithTag but expects there to be one result,