feat: implement forFeature method

.gitignore

@@ -4,3 +4,4 @@ node_modules
 lib
 coverage
 dist
+docs

src/main.spec.ts

@@ -1,4 +1,4 @@
-import { RedisModule, REDIS_CLIENT, RedisClientType } from "./main";
+import { RedisModule, REDIS_CLIENT } from "./main";
 
 describe("main exports", () => {
   it("is defined", () => {

src/redis/redis.client.ts

@@ -1,4 +1,4 @@
 import { createClient } from "redis";
 
 export const REDIS_CLIENT = "RedisClient";
-export type RedisClientType = ReturnType<typeof createClient>;
+export type RedisClient = ReturnType<typeof createClient>;

src/redis/redis.module.ts

@@ -46,6 +46,22 @@ export class RedisModule {
     };
   }
 
+  public static forFeature(): DynamicModule {
+    return {
+      module: RedisModule,
+      providers: [
+        RedisProvider,
+        {
+          provide: REDIS_CLIENT,
+          useFactory: async (redisProvider: RedisProvider) =>
+            await redisProvider.getClient(),
+          inject: [RedisProvider],
+        },
+      ],
+      exports: [REDIS_CLIENT],
+    };
+  }
+
   private static createConfigProviders(
     options: RedisModuleAsyncOptions
   ): Provider {

src/redis/redis.provider.ts

@@ -1,17 +1,17 @@
 import { Inject, Injectable, Logger } from "@nestjs/common";
 import { REDIS_OPTIONS, RedisConnectionOptions } from "./redis.config";
 import { createClient } from "redis";
-import { REDIS_CLIENT, RedisClientType } from "./redis.client";
+import { REDIS_CLIENT, RedisClient } from "./redis.client";
 
 @Injectable()
 export class RedisProvider {
-  client: RedisClientType;
+  client: RedisClient;
 
   constructor(
     @Inject(REDIS_OPTIONS) private readonly options: RedisConnectionOptions
   ) {}
 
-  async getClient(): Promise<RedisClientType> {
+  async getClient(): Promise<RedisClient> {
     if (this.client) return this.client;
     this.client = createClient(this.options);