@google-cloud/bigquery/build/src/logger.d.ts

Google BigQuery Client Library for Node.js

/**
 * Sets or disables the log function for all active BigQuery instances.
 *
 * @param logger A log function that takes a message (such as `console.log`) or
 * `null` to turn off logging.
 */
export declare function setLogFunction(logger: ((msg: string) => void) | null): void;