| /** |
| * 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 const readFile = (event: any) => { |
| return new Promise((resolve) => { |
| const { files } = event.target; |
| if (files.length < 1) { |
| return; |
| } |
| const file = files[0]; |
| const reader: FileReader = new FileReader(); |
| reader.readAsText(file); |
| reader.onload = function() { |
| if (typeof this.result === 'string') { |
| resolve(JSON.parse(this.result)); |
| } |
| }; |
| }); |
| }; |