feat: types adjustments (#3)

Author: onhate

package.json

@@ -1,6 +1,6 @@
 {
   "name": "nest-events",
-  "version": "2.0.3",
+  "version": "2.0.5",
   "private": false,
   "license": "MIT",
   "repository": {
@@ -22,7 +22,7 @@
   "scripts": {
     "build": "tsc --project tsconfig-build.json",
     "prebuild": "npx rimraf dist",
-    "prepublish": "npm run build",
+    "prepublishOnly": "npm run build",
     "lint": "eslint \"{src}/**/*.ts\" --fix",
     "test": "jest",
     "test:watch": "jest --watch",

src/definitions.ts

@@ -2,10 +2,11 @@ import { Inject, Optional } from '@nestjs/common';
 import { ConstructorOptions, EventEmitter2 } from 'eventemitter2';
 
 export type IEventEmitter = Pick<EventEmitter2, 'emitAsync' | 'on' | 'off'>;
+export const Options = Symbol('EventBusModuleOptions');
 
 
 export class DefaultEventEmitter extends EventEmitter2 implements IEventEmitter {
-  constructor(@Optional() @Inject('Options') options?: ConstructorOptions) {
+  constructor(@Optional() @Inject(Options) options?: ConstructorOptions) {
     super(options);
   }
 }

src/eventbus.ts

@@ -10,7 +10,7 @@ export class EventBus {
     return await this.emitter().emitAsync(event, ...args);
   }
 
-  public emitter(emitter: string = 'default'): IEventEmitter | undefined {
+  public emitter(emitter: string = 'default'): IEventEmitter {
     if (this.module.getEmitters().has(emitter)) {
       return this.module.getEmitters().get(emitter);
     }

src/module.ts

@@ -1,7 +1,7 @@
 import { DynamicModule, Module } from '@nestjs/common';
 import { DiscoveryModule } from '@nestjs/core';
 import { ConstructorOptions } from 'eventemitter2';
-import { DefaultEventEmitter } from './definitions';
+import { DefaultEventEmitter, Options } from './definitions';
 import { EventBus } from './eventbus';
 import { EventBusInitializer } from './initializer';
 
@@ -23,7 +23,7 @@ export class EventBusModule {
       module: EventBusModule,
       imports: [DiscoveryModule],
       providers: [
-        { provide: 'Options', useValue: options },
+        { provide: Options, useValue: options },
         EventBusInitializer,
         EventBus,
         DefaultEventEmitter