feat!(): add custom execution context

lib/helpers/create-scene-listener-decorator.helper.ts

@@ -1,18 +0,0 @@
-import { SetMetadata } from '@nestjs/common';
-import { BaseScene as Scene } from 'telegraf';
-import { ComposerMethodArgs, SceneMethods } from '../telegraf.types';
-import { UPDATE_LISTENER_METADATA } from '../telegraf.constants';
-import { ListenerMetadata } from '../interfaces';
-
-export function createSceneListenerDecorator<Method extends SceneMethods>(
-  method: Method,
-) {
-  return (
-    ...args: ComposerMethodArgs<Scene<never>, Method>
-  ): MethodDecorator => {
-    return SetMetadata(UPDATE_LISTENER_METADATA, {
-      method,
-      args,
-    } as ListenerMetadata);
-  };
-}

lib/helpers/create-update-listener-decorator.helper.ts

@@ -1,18 +0,0 @@
-import { SetMetadata } from '@nestjs/common';
-import { Composer } from 'telegraf';
-import { ComposerMethodArgs, UpdateMethods } from '../telegraf.types';
-import { UPDATE_LISTENER_METADATA } from '../telegraf.constants';
-import { ListenerMetadata } from '../interfaces';
-
-export function createUpdateListenerDecorator<Method extends UpdateMethods>(
-  method: Method,
-) {
-  return (
-    ...args: ComposerMethodArgs<Composer<never>, Method>
-  ): MethodDecorator => {
-    return SetMetadata(UPDATE_LISTENER_METADATA, {
-      method,
-      args,
-    } as ListenerMetadata);
-  };
-}

lib/helpers/index.ts

@@ -1,2 +0,0 @@
-export * from './create-update-listener-decorator.helper';
-export * from './create-scene-listener-decorator.helper';

lib/helpers/is-error-object.helper.ts

@@ -0,0 +1,5 @@
+import { isObject } from '@nestjs/common/utils/shared.utils';
+
+export function isErrorObject(err: any): err is Error {
+  return isObject(err) && !!(err as Error).message;
+}

lib/helpers/is-observable.helper.ts

@@ -0,0 +1,5 @@
+import { isFunction } from '@nestjs/common/utils/shared.utils';
+
+export function isObservable(result: any): boolean {
+  return result && isFunction(result.subscribe);
+}