refactor(): complex refactoring

lib/decorators/telegram-catch.decorator.ts

@@ -0,0 +1,18 @@
+import { Type } from '@nestjs/common'
+import { TelegramErrorHandler } from '../interfaces'
+
+type Decorator = (error: any) => ClassDecorator
+
+type HandlerDecorator = Decorator & {
+  handlers?: Map<Error, Type<TelegramErrorHandler>>
+}
+
+export const TelegramCatch: HandlerDecorator = error => target => {
+  if (!TelegramCatch.handlers) {
+    TelegramCatch.handlers = new Map()
+  }
+
+  TelegramCatch.handlers.set(error, target as any)
+
+  return target
+}