html5/render/vue/components/warning.js

/*
 * Licensed to the Apache Software Foundation (ASF) under one
 * or more contributor license agreements.  See the NOTICE file
 * distributed with this work for additional information
 * regarding copyright ownership.  The ASF licenses this file
 * to you 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.
 */
export default {
  render () {
    // TODO: add tag nesting validation
    if (process.env.NODE_ENV === 'development') {
      const tag = this.$options._componentTag
      const parentTag = this.$parent.$options._componentTag
      console.warn(`[Vue Render] The <${tag}> can't be the child of <${parentTag}>.`)
    }
    return null
  }
}