Fix types for pino.multistream

pino.d.ts

@@ -232,21 +232,21 @@ declare namespace P {
     }
 
     interface StreamEntry {
-        stream: WriteStream
-        level: Level
+        stream: DestinationStream
+        level?: Level
     }
 
     interface MultiStreamRes {
         write: (data: any) => void,
         add: (dest: Record<string, any>) => MultiStreamRes,
         flushSync: () => void,
         minLevel: number,
-        streams: WriteStream[],
+        streams: ({ stream: DestinationStream, level: number, id: number })[],
         clone(level: Level): MultiStreamRes,
     }
 
     function multistream(
-        streamsArray: StreamEntry[], opts: P.MultiStreamOptions
+        streamsArray: StreamEntry[], opts?: P.MultiStreamOptions
     ): MultiStreamRes
 
     /**

test/types/pino-multistream.test-d.ts

@@ -0,0 +1,17 @@
+import { expectType } from 'tsd'
+
+import { createWriteStream } from 'fs'
+
+import pino from '../../pino'
+
+const streams = [
+  { stream: process.stdout },
+  { stream: createWriteStream('') },
+  { level: 'error' as const, stream: process.stderr },
+  { level: 'fatal' as const, stream: createWriteStream('') }
+]
+
+expectType<pino.MultiStreamRes>(pino.multistream(streams))
+expectType<pino.MultiStreamRes>(pino.multistream(streams, {}))
+expectType<pino.MultiStreamRes>(pino.multistream(streams, { levels: { 'info': 30 } }))
+expectType<pino.MultiStreamRes>(pino.multistream(streams, { dedupe: true }))