✨ Add composable logger core utilities

bitlogger/logger.mbt

@@ -36,6 +36,37 @@ pub fn[S] Logger::with_context_fields(self : Logger[S], fields : Array[Field]) -
   }
 }
 
+pub fn[S] Logger::with_filter(self : Logger[S], predicate : (Record) -> Bool) -> Logger[FilterSink[S]] {
+  {
+    min_level: self.min_level,
+    sink: filter_sink(self.sink, predicate),
+    target: self.target,
+    timestamp: self.timestamp,
+  }
+}
+
+pub fn[S] Logger::with_patch(self : Logger[S], patch : RecordPatch) -> Logger[PatchSink[S]] {
+  {
+    min_level: self.min_level,
+    sink: patch_sink(self.sink, patch),
+    target: self.target,
+    timestamp: self.timestamp,
+  }
+}
+
+pub fn[S] Logger::with_queue(
+  self : Logger[S],
+  max_pending~ : Int = 0,
+  overflow~ : QueueOverflowPolicy = QueueOverflowPolicy::DropNewest,
+) -> Logger[QueuedSink[S]] {
+  {
+    min_level: self.min_level,
+    sink: queued_sink(self.sink, max_pending=max_pending, overflow=overflow),
+    target: self.target,
+    timestamp: self.timestamp,
+  }
+}
+
 pub fn[S] Logger::with_min_level(self : Logger[S], min_level : Level) -> Logger[S] {
   { ..self, min_level }
 }