feat(log-record): add message, name, msg, args fields and getMessage

src/log-record.ts

@@ -48,13 +48,32 @@ export class LogRecord {
     public readonly levelno: LogLevel;
     public readonly levelname: string|LogLevel;
     public readonly scope: string;
+    public readonly name: string;
+    public readonly msg: string;
+    public readonly args: any[]|undefined;
+    public message: string = '';
 
     public readonly created: MillisecondsSinceUnixEpoch = Date.now();
+    public asctime: string = '';
 
     constructor(scope: string, options: LogRecordOptions) {
         this.levelno = options.level;
         this.levelname = getLevelName(options.level);
         this.scope = scope;
+        this.name = scope;
+        this.msg = options.msg;
+        this.args = options.args;
+    }
+
+    getMessage(): string {
+        let msg = String(this.msg);
+        if (this.args && this.args.length > 0) {
+            msg = this.args.reduce(
+                (s, arg) => s.replace('%s', String(arg)),
+                msg
+            );
+        }
+        return msg;
     }
 }