diff --git a/mod.ts b/mod.ts
index 701600c..c134ad3 100644
--- a/mod.ts
+++ b/mod.ts
@@ -224,7 +224,7 @@ class ListenersBase {
             for (const cb of typeListeners) (cb as TypeListener)(msg, msgtype, source, time);
     }
 }
-const LoggingListeners = new ListenersBase();
+const LoggingListeners: ListenersBase = new ListenersBase();
 
 enum LogTiming {
     Sync,
@@ -242,14 +242,14 @@ class LoggingConfigurationBase {
 
     #timeType: TimeFormat = TimeFormat.Utc;
 
-    get timeFormat() { return this.#timeType }
-    set timeFormat(data) { this.#timeType = data }
+    get timeFormat(): TimeFormat { return this.#timeType }
+    set timeFormat(data: TimeFormat) { this.#timeType = data }
 
-    get logTiming() { return this.#timing; }
-    set logTiming(data) { this.#timing = data }
+    get logTiming(): LogTiming { return this.#timing; }
+    set logTiming(data: LogTiming) { this.#timing = data }
 
 }
-const LoggingConfiguration = new LoggingConfigurationBase();
+const LoggingConfiguration: LoggingConfigurationBase = new LoggingConfigurationBase();
 
 export { MessageType, TimeFormat, LogTiming, MessageTypeVisibility, LoggingListeners, LoggingConfiguration };
 export default Logging;
\ No newline at end of file