fix(logger): log level as number enum

Author: mumenthalers

src/logger/log-level.type.ts

@@ -4,4 +4,9 @@
 /**
  * LogLevel
  */
-export type LogLevel = 'warning' | 'info' | 'debug'
+export enum LogLevel {
+  // ERROR = 1, // currently not used, since errors are thrown
+  WARNING = 2,
+  INFO = 3,
+  DEBUG = 4
+}

src/logger/logger.ts

@@ -43,8 +43,8 @@ function getLogFn(className: string, modelConstructor: string, level: LogLevel):
  */
 export function createLogger(className: string, modelConstructor: ModelConstructor<any>): Logger {
   return {
-    warn: getLogFn(className, modelConstructor.name, 'warning'),
-    info: getLogFn(className, modelConstructor.name, 'info'),
-    debug: getLogFn(className, modelConstructor.name, 'debug'),
+    warn: getLogFn(className, modelConstructor.name, LogLevel.WARNING),
+    info: getLogFn(className, modelConstructor.name, LogLevel.INFO),
+    debug: getLogFn(className, modelConstructor.name, LogLevel.DEBUG),
   }
 }