text: // Copyright 2019 Google LLC
  //
  // 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.
  
  'use strict';
  
  function main(
    datasetId = 'my_dataset',
    tableId = 'my_table',
    bucketName = 'my-bucket',
    filename = 'file.csv'
  ) {
    // [START bigquery_extract_table]
    // Import the Google Cloud client libraries
    const {BigQuery} = require('@google-cloud/bigquery');
    const {Storage} = require('@google-cloud/storage');
  
    const bigquery = new BigQuery();
    const storage = new Storage();
  
    async function extractTableToGCS() {
      // Exports my_dataset:my_table to gcs://my-bucket/my-file as raw CSV.
  
      /**
       * TODO(developer): Uncomment the following lines before running the sample.
       */
      // const datasetId = "my_dataset";
      // const tableId = "my_table";
      // const bucketName = "my-bucket";
      // const filename = "file.csv";
  
      // Location must match that of the source table.
      const options = {
        location: 'US',
      };
  
      // Export data from the table into a Google Cloud Storage file
      const [job] = await bigquery
        .dataset(datasetId)
        .table(tableId)
        .extract(storage.bucket(bucketName).file(filename), options);
      // load() waits for the job to finish
      console.log(`Job ${job.id} completed.`);
  
      // Check the job's status for errors
      const errors = job.status.errors;
      if (errors && errors.length > 0) {
        throw errors;
      }
    }
    // [END bigquery_extract_table]
    extractTableToGCS();
  }
  main(...process.argv.slice(2));
  