fix: 🐛 allow Redis.Cluster signature for client (#163)

🏁 Closes: #162

Author: jimmy-guzman

types/index.d.ts

@@ -1,5 +1,5 @@
 import { FastifyPluginCallback } from 'fastify';
-import { Redis, RedisOptions } from 'ioredis';
+import { Cluster, Redis, RedisOptions } from 'ioredis';
 
 export interface FastifyRedisNamespacedInstance {
   [namespace: string]: Redis;
@@ -18,7 +18,7 @@ export type FastifyRedisPluginOptions = (RedisOptions &
   url?: string;
   namespace?: string;
 }) | {
-  client: Redis;
+  client: Redis | Cluster;
   namespace?: string;
   closeClient?: boolean;
 }

types/index.test-d.ts

@@ -1,10 +1,11 @@
 import Fastify, { FastifyInstance } from 'fastify'
 import IORedis, { Redis } from 'ioredis'
 import { expectAssignable, expectError, expectType } from 'tsd'
-import fastifyRedis, { FastifyRedis, FastifyRedisNamespacedInstance } from '..'
+import fastifyRedis, { FastifyRedis, FastifyRedisNamespacedInstance, FastifyRedisPluginOptions } from '..'
 
 const app: FastifyInstance = Fastify()
 const redis: Redis = new IORedis({ host: 'localhost', port: 6379 })
+const redisCluster= new IORedis.Cluster([{ host: 'localhost', port: 6379 }])
 
 app.register(fastifyRedis, { host: '127.0.0.1' })
 
@@ -19,6 +20,10 @@ app.register(fastifyRedis, {
   url: 'redis://127.0.0.1:6379'
 })
 
+expectAssignable<FastifyRedisPluginOptions>({
+  client: redisCluster
+})
+
 expectError(app.register(fastifyRedis, {
   namespace: 'three',
   unknownOption: 'this should trigger a typescript error'