text: // Copyright 2021 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.
  
  /**
   * This application demonstrates how to perform basic operations on buckets with
   * the Google Cloud Storage API.
   *
   * For more information, see the README.md under /storage and the documentation
   * at https://cloud.google.com/storage/docs.
   */
  
  function main(bucketName = 'my-bucket') {
    // [START storage_set_public_access_prevention_enforced]
    /**
     * TODO(developer): Uncomment the following lines before running the sample.
     */
    // The name of your GCS bucket
    // const bucketName = 'Name of a bucket, e.g. my-bucket';
  
    // Imports the Google Cloud client library
    const {Storage} = require('@google-cloud/storage');
  
    // Creates a client
    const storage = new Storage();
  
    // Enforces public access prevention for the bucket
    async function setPublicAccessPreventionEnforced() {
      await storage.bucket(bucketName).setMetadata({
        iamConfiguration: {
          publicAccessPrevention: 'enforced',
        },
      });
  
      console.log(
        `Public access prevention is set to enforced for ${bucketName}.`
      );
    }
  
    setPublicAccessPreventionEnforced();
    // [END storage_set_public_access_prevention_enforced]
  }
  
  main(...process.argv.slice(2));
  