docs: function setup(testPostgresHost) {
    const postgresHost = testPostgresHost || POSTGRES_HOST;
  
    if (!postgresHost) {
      return Promise.reject(new Error('No postgres host set'));
    }
  
    return client.connect()
      .then(() => client.createSchema('components'))
      .then(() => client.createSchema('layouts'))
      .then(createTables)
      .then(() => ({ server: `${postgresHost}:${POSTGRES_PORT}` }));
  }