diff --git a/lib/telegraf.types.ts b/lib/telegraf.types.ts
index e2b5e52..9b50ff3 100644
--- a/lib/telegraf.types.ts
+++ b/lib/telegraf.types.ts
@@ -1,22 +1,26 @@
+import { Type } from '@nestjs/common/interfaces/type.interface';
 import { Composer, Telegraf } from 'telegraf';
 import { Context } from './interfaces';
 
-export type TelegrafActionTriggers = Parameters<Composer<Context>['action']>[0];
-export type TelegrafHearsTriggers = Parameters<Composer<Context>['hears']>[0];
-export type TelegrafInlineQueryTriggers = Parameters<
-  Composer<Context>['inlineQuery']
+type CtxComposer = Composer<Context>;
+
+type ComposerMethodFirstArg<T extends keyof CtxComposer> = Parameters<
+  CtxComposer[T]
 >[0];
-export type TelegrafEmail = Parameters<Composer<Context>['email']>[0];
-export type TelegrafUrl = Parameters<Composer<Context>['url']>[0];
-export type TelegrafTextLink = Parameters<Composer<Context>['textLink']>[0];
-export type TelegrafTextMention = Parameters<
-  Composer<Context>['textMention']
->[0];
-export type TelegrafCashtag = Parameters<Composer<Context>['cashtag']>[0];
-export type TelegrafHashtag = Parameters<Composer<Context>['hashtag']>[0];
-export type TelegrafCommand = Parameters<Composer<Context>['command']>[0];
-export type TelegrafMention = Parameters<Composer<Context>['mention']>[0];
-export type TelegrafPhone = Parameters<Composer<Context>['phone']>[0];
-export type TelegrafUpdateType = Parameters<Composer<Context>['on']>[0];
-export type TelegrafOption = ConstructorParameters<typeof Telegraf>[1];
+
+export type TelegrafActionTriggers = ComposerMethodFirstArg<'action'>;
+export type TelegrafHearsTriggers = ComposerMethodFirstArg<'hears'>;
+export type TelegrafInlineQueryTriggers = ComposerMethodFirstArg<'inlineQuery'>;
+export type TelegrafEmail = ComposerMethodFirstArg<'email'>;
+export type TelegrafUrl = ComposerMethodFirstArg<'url'>;
+export type TelegrafTextLink = ComposerMethodFirstArg<'textLink'>;
+export type TelegrafTextMention = ComposerMethodFirstArg<'textMention'>;
+export type TelegrafCashtag = ComposerMethodFirstArg<'cashtag'>;
+export type TelegrafHashtag = ComposerMethodFirstArg<'hashtag'>;
+export type TelegrafCommand = ComposerMethodFirstArg<'command'>;
+export type TelegrafMention = ComposerMethodFirstArg<'mention'>;
+export type TelegrafPhone = ComposerMethodFirstArg<'phone'>;
+export type TelegrafUpdateType = ComposerMethodFirstArg<'on'>;
+
+export type TelegrafOption = ConstructorParameters<Type<Telegraf<Context>>>[1];
 export type TelegrafLaunchOption = Parameters<Telegraf['launch']>[0];