Step 1: Basic container with manual registration

DependencyInjection/src/Step1/Logger.ts

@@ -0,0 +1,23 @@
+export class Logger {
+  private _category: string;
+
+  constructor(category: string) {
+    this._category = category;
+  }
+
+  public info(message: string, ...optionalArgs: unknown[]): void {
+    const formattedMessage = this.formatMessage('INFO', message);
+
+    console.log(formattedMessage, ...optionalArgs);
+  }
+
+  public error(message: string, ...optionalArgs: unknown[]): void {
+    const formattedMessage = this.formatMessage('ERROR', message);
+
+    console.error(formattedMessage, ...optionalArgs);
+  }
+
+  private formatMessage(level: string, message: string): string {
+    return `${new Date().toISOString()} [${this._category}] [${level}] ${message}`;
+  }
+}