Redis v4 config problem & solution (so you don't have to sweat)

[Chriskuiper1]

When installing Redis @ 1:41h and testing the auth cookie, graphql will crash. This is because the new version of Redis (v4) doesn't support the code from the tuturial. The codeblock below will fix this. You can find the full documentation here: https://www.npmjs.com/package/connect-redis

const session = require("express-session");
let RedisStore = require("connect-redis")(session);

const main = async () => {
    const orm = await MikroORM.init(microConfig);
    await orm.getMigrator().up();

    const { createClient } = require("redis");
    let redisClient = createClient({ legacyMode: true });

    redisClient.on("connect", () => console.log("Connected to Redis!"));
    redisClient.on("error", (err: Error) =>
        console.log("Redis Client Error", err)
    );
    redisClient.connect();

    const app = express();

    app.use(
        session({
            name: "qid",
            store: new RedisStore({
                client: redisClient,
                disableTouch: true,
            }),
            cookie: {
                maxAge: 1000 * 60 * 60 * 24 * 365 * 1, // 1 year
                httpOnly: true,
                sameSite: "lax",
                secure: __prod__, // cookie only works in https
            },
            saveUninitialized: false,
            secret: "bruhhhh",
            resave: false,
        })
    );

[tonype]

Thank you! I found the determining thing for me that got it to work was passing in legacyMode: true into createClient.

[AbhinavHaridas]

Thanks! I went through stack overflow and asked a lot of questions to chat gpt. But this is the only one that worked. :)

[mhd-hi]

I still get this error:

let RedisStore = require("connect-redis")(session);
                                         ^

TypeError: require(...) is not a function
    at Object.<anonymous> (C:\Users\moham\Documents\Projects\lilReddit\dist\index.js:26:42)
    at Module._compile (node:internal/modules/cjs/loader:1155:14)
    at Object.Module._extensions..js (node:internal/modules/cjs/loader:1209:10)
    at Module.load (node:internal/modules/cjs/loader:1033:32)
    at Function.Module._load (node:internal/modules/cjs/loader:868:12)
    at Function.executeUserEntryPoint [as runMain] (node:internal/modules/run_main:81:12)
    at node:internal/main/run_main_module:22:47
[nodemon] app crashed - waiting for file changes before starting...

in yarn dev console.

Here's my code:

import "dotenv/config";
import { MikroORM } from "@mikro-orm/core";
import { __prod__ } from "./constants";
import microConfig from "./mikro-orm.config";
import express from "express";
import { ApolloServer } from "apollo-server-express";
import { buildSchema } from "type-graphql";
import "reflect-metadata";
import { UserResolver } from "./resolvers/user";
import { PostResolver } from "./resolvers/post";
import { MyContext } from "types";

const session = require("express-session");
let RedisStore = require("connect-redis")(session);

const main = async () => {
  const orm = await MikroORM.init(microConfig);
  await orm.getMigrator().up();

  const { createClient } = require("redis");
  let redisClient = createClient({ legacyMode: true });

  redisClient.on("connect", () => console.log("Connected to Redis!"));
  redisClient.on("error", (err: Error) =>
    console.log("Redis Client Error", err)
  );
  redisClient.connect();

  const app = express();
  app.use(
    session({
      name: "qid",
      store: new RedisStore({
        client: redisClient,
        disableTouch: true,
      }),
      cookie: {
        maxAge: 1000 * 60 * 60 * 24 * 365 * 1, // 1 year
        httpOnly: true,
        sameSite: "lax",
        secure: __prod__, // cookie only works in https
      },
      saveUninitialized: false,
      secret: "bruhhhh",
      resave: false,
    })
  );

My tsconfig:

{
  "compilerOptions": {
    "target": "es6",
    "module": "commonjs",
    "lib": ["dom", "es6", "es2017", "esnext.asynciterable"],
    "sourceMap": true,
    "outDir": "./dist",
    "moduleResolution": "node",
    "removeComments": true,
    "noImplicitAny": true,
    "strictNullChecks": true,
    "strictFunctionTypes": true,
    "noImplicitThis": true,
    "noUnusedLocals": true,
    "noUnusedParameters": true,
    "noImplicitReturns": true,
    "noFallthroughCasesInSwitch": true,
    "allowSyntheticDefaultImports": true,
    "esModuleInterop": true,
    "skipLibCheck": true,
    "emitDecoratorMetadata": true,
    "experimentalDecorators": true,
    "resolveJsonModule": true,
    "baseUrl": "./src",
    "paths": {
      "*": ["*", "src/*"]
    },
    "types": ["node", "express", "express-session"]
  },
  "exclude": ["node_modules"],
  "include": ["./src/**/*.tsx", "./src/**/*.ts"]
}

I appreciate any help

[mhd-hi]

Found the fix : https://www.npmjs.com/package/connect-redis

[princewillopah]

@mhd-hi, how did the link help? what did you do differently. i have similar issue. Thanks