From ddeb25b68d618d09294d9db267610dbbd11a4a93 Mon Sep 17 00:00:00 2001
From: mike12345567 <me@michaeldrury.co.uk>
Date: Fri, 2 Jun 2023 11:52:50 +0100
Subject: [PATCH] Updating mock redis to only import if it is needed.

---
 packages/backend-core/src/redis/redis.ts | 10 +++++++---
 1 file changed, 7 insertions(+), 3 deletions(-)

diff --git a/packages/backend-core/src/redis/redis.ts b/packages/backend-core/src/redis/redis.ts
index 636544897d..25a9314c6d 100644
--- a/packages/backend-core/src/redis/redis.ts
+++ b/packages/backend-core/src/redis/redis.ts
@@ -1,7 +1,11 @@
 import env from "../environment"
 import Redis from "ioredis"
-// ioredis mock is all in memory
-const MockRedis = require("ioredis-mock")
+// mock-redis doesn't have any typing
+let MockRedis: any | undefined
+if (env.MOCK_REDIS) {
+  // ioredis mock is all in memory
+  MockRedis = require("ioredis-mock")
+}
 import {
   addDbPrefix,
   removeDbPrefix,
@@ -56,7 +60,7 @@ function connectionError(
  * will return the ioredis client which will be ready to use.
  */
 function init(selectDb = DEFAULT_SELECT_DB) {
-  const RedisCore = env.MOCK_REDIS ? MockRedis : Redis
+  const RedisCore = env.MOCK_REDIS && MockRedis ? MockRedis : Redis
   let timeout: NodeJS.Timeout
   CLOSED = false
   let client = pickClient(selectDb)