better types

src/mod.ts

@@ -12,11 +12,11 @@ class Logging {
     /**
      * Gets the line ending for this platform.
      */
-    static getNewline() {
-        return Deno.build.os === 'windows' ? '\r\n' : '\n'
+    static getNewline(): '\r\n' | '\n' {
+        return Deno.build.os === 'windows' ? '\r\n' : '\n';
     }
 
-    static timeStr(format: TimeFormat, time: Date) {
+    static timeStr(format: TimeFormat, time: Date): string {
         switch (format) {
             case TimeFormat.None:
                 return '';
@@ -30,7 +30,7 @@ class Logging {
                 return `${time.toISOString()} `;
         }
     }
-    static typeStr(type: MessageType) {
+    static typeStr(type: MessageType): string {
         switch (type) {
             case MessageType.Info:
                 return '[INFO]';
@@ -236,9 +236,13 @@ type TypeListener = (msg: string, type: MessageType, source: string, time: Date)
 type Listener = BasicListener | TypeListener;
 type ListenerType = 'basic' | 'type';
 
+interface InternalListener {
+    cb: Listener,
+    type: ListenerType
+}
 export class ListenersBase {
 
-    listeners = new Set<{ cb: Listener, type: ListenerType }>();
+    listeners: Set<InternalListener> = new Set<InternalListener>();
 
     /** Register listener callback */
     onmsg(type: 'basic', cb: BasicListener): void
@@ -339,7 +343,7 @@ class LoggingConfigurationBase {
     addConversion<T>(con: Conversion<T>) {
         this.#conversions.add(con);
     }
-    getConversions() {
+    getConversions(): Set<Conversion> {
         return this.#conversions;
     }