Fix type

Author: hsubox76

packages/logger/src/logger.ts

@@ -141,15 +141,21 @@ export class Logger {
    * The log level of the given Logger instance.
    */
   private _logLevel = defaultLogLevel;
-  get logLevel(): LogLevel | LogLevelString {
+
+  get logLevel(): LogLevel {
     return this._logLevel;
   }
-  set logLevel(val: LogLevel | LogLevelString) {
-    const newLevel = typeof val === 'string' ? levelStringToEnum[val] : val;
-    if (!(newLevel in LogLevel)) {
+
+  set logLevel(val: LogLevel) {
+    if (!(val in LogLevel)) {
       throw new TypeError(`Invalid value "${val}" assigned to \`logLevel\``);
     }
-    this._logLevel = newLevel;
+    this._logLevel = val;
+  }
+
+  // Workaround for setter/getter having to be the same type.
+  setLogLevel(val: LogLevel | LogLevelString): void {
+    this._logLevel = typeof val === 'string' ? levelStringToEnum[val] : val;
   }
 
   /**
@@ -207,7 +213,7 @@ export class Logger {
 
 export function setLogLevel(level: LogLevelString | LogLevel): void {
   instances.forEach(inst => {
-    inst.logLevel = level;
+    inst.setLogLevel(level);
   });
 }