/**
 * Copyright 2018 The Incremental DOM Authors. All Rights Reserved.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS-IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

/**
 * The name of the HTML attribute that holds the element key
 * (e.g. `<div key="foo">`). The attribute value, if it exists, is then used
 * as the default key when importing an element.
 * If null, no attribute value is used as the default key.
 */
let keyAttributeName: string | null = "key";

function getKeyAttributeName() {
  return keyAttributeName;
}

function setKeyAttributeName(name: string | null) {
  keyAttributeName = name;
}

export { DEBUG } from "./debug";
export { getKeyAttributeName, setKeyAttributeName };