[express-pino-logger]: add destination argument type (#38153)

types/express-pino-logger/express-pino-logger-tests.ts

@@ -4,18 +4,31 @@ import expressPinoLogger = require('express-pino-logger');
 
 const server = express();
 
-// no options
+// no arguments
 
 let middleware = expressPinoLogger();
 server.use(middleware);
 
-// pino own options
+// pino options only
 
 const pinoOptions: pino.LoggerOptions = {};
 middleware = expressPinoLogger(pinoOptions);
 server.use(middleware);
 
-// options with existing logger
+// pino destination only
+
+const pinoDestination: pino.DestinationStream = pino.destination('/log/path');
+middleware = expressPinoLogger(pinoDestination);
+server.use(middleware);
+
+// pino options and destination
+
+const pinoOpts: pino.LoggerOptions = {};
+const pinoDest: pino.DestinationStream = pino.destination('/log/path');
+middleware = expressPinoLogger(pinoOpts, pinoDest);
+server.use(middleware);
+
+// existing logger
 
 const logger = pino();
 const optionsWithLogger = { logger };

types/express-pino-logger/index.d.ts

@@ -5,9 +5,11 @@
 // TypeScript Version: 2.7
 
 import { Handler } from 'express';
-import { LoggerOptions, Logger } from 'pino';
+import { DestinationStream, LoggerOptions, Logger } from 'pino';
 
-declare function expressPinoLogger(options?: LoggerOptions | { logger?: Logger }): Handler;
+declare function expressPinoLogger(optionsOrStream?: LoggerOptions | DestinationStream | { logger: Logger }): Handler;
+
+declare function expressPinoLogger(options: LoggerOptions, stream: DestinationStream): Handler;
 
 export = expressPinoLogger;