superset/superset-frontend/cypress-base/cypress/utils/readResponseBlob.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.
 */
// This function returns a promise that resolves to the value
// of the passed response blob. It assumes the blob should be read as text,
// and that the response can be parsed as JSON. This is needed to read
// the value of any fetch-based response.
export default function readResponseBlob(blob) {
  return new Promise(resolve => {
    const reader = new FileReader();
    reader.onload = () => resolve(JSON.parse(reader.result));
    reader.readAsText(blob);
  });
}