fix: streams can be named

as documented in <https://github.com/trentm/node-bunyan#levels>

types/bunyan/bunyan-tests.ts

@@ -29,7 +29,8 @@ let options: Logger.LoggerOptions = {
     streams: [{
         type: 'stream',
         stream: process.stdout,
-        level: Logger.TRACE
+        level: Logger.TRACE,
+        name: 'foo'
     }, {
         type: 'file',
         path: '/tmp/test.log',
@@ -69,6 +70,14 @@ log.addSerializers(
     }
 );
 
+let levels: number[] = log.levels();
+level = log.levels(0);
+log.levels('foo');
+
+log.levels(0, Logger.INFO);
+log.levels(0, 'info');
+log.levels('foo', Logger.WARN);
+
 let child = log.child({ name: 'child' });
 child.reopenFileStreams();
 log.addStream({ path: '/dev/null' });

types/bunyan/index.d.ts

@@ -228,6 +228,7 @@ declare namespace Logger {
         closeOnExit?: boolean;
         period?: string;
         count?: number;
+        name?: string;
     }
 
     interface LoggerOptions {