redirect_gcs_requests.js

const Storage = require('@google-cloud/storage')

const storage = new Storage({ 
  projectId: 'myproject',
  customEndpoint: true 
})

const googleStorageUrl = 'https://www.googleapis.com/storage/v1'

storage.interceptors.push({
  request: reqOpts => {
    console.log(" * Original request: ", reqOpts)
    if (reqOpts.uri.includes(googleStorageUrl)) {
      reqOpts.uri = reqOpts.uri.replace(googleStorageUrl, 'http://localhost:9828')
      console.log(" * Rewritten url: ", reqOpts)
    }
    return reqOpts
  }
})

const bucketName = 'mytestbucket'

// Creates the new bucket
storage
  .createBucket(bucketName)
  .then(() => {
    console.log(`Bucket ${bucketName} created.`);
  })
  .catch(err => {
    console.error('ERROR:', err);
  });