Definitelytyped: @types/sequelize is out of date

[TidyIQ]

If you know how to fix the issue, make a pull request instead.

• [x] I tried using the @types/sequelize package and had problems.
• [x] I tried using the latest stable version of tsc. https://www.npmjs.com/package/typescript
• [x] I have a question that is inappropriate for StackOverflow. (Please ask any appropriate questions there).
• [x] [Mention](https://github.com/blog/821-mention-somebody-they-re-notified) the authors (see Definitions by: in index.d.ts) so they can respond.
  
  
  
  • Authors: @.... @samuelneff @codeanimal @drinchev @drinchev @kukoo1 @oktapodia @morpheusxaut @TitaneBoy @zjy01 @nidzov @Raigen @todd @nrschultz @thomas-b @Antoine38660 @smff @truongkhanhduy95
  
  

If you do not mention the authors the issue will be ignored.

Issue:

It appears this is out of date. For example, the following code:

import * as Sequelize from "sequelize";

export interface IF_UserAttributes {
  name: string;
}
export interface IF_UserInstance extends Sequelize.Instance<IF_UserAttributes>, IF_UserAttributes {
}

produces the following error:

error TS2694: Namespace '".../node_modules/sequelize/types/index"' has no exported member
'Instance'

The same issue occurs if I try to use Sequelize.Models and Sequelize.DataTypes as well. Sequelize.Sequelize is the only one that works for me out of all the ones I've tried.

Here's my dependencies:

"devDependencies": {
    "@babel/core": "^7.4.3",
    "@babel/node": "^7.2.2",
    "@babel/preset-env": "^7.4.3",
    "@babel/register": "^7.4.0",
    "@types/bcrypt": "^3.0.0",
    "@types/bluebird": "^3.5.26",
    "@types/cors": "^2.8.5",
    "@types/dotenv": "^6.1.1",
    "@types/express": "^4.16.1",
    "@types/graphql": "^14.2.0",
    "@types/graphql-resolvers": "^0.2.0",
    "@types/ioredis": "^4.0.10",
    "@types/jsonwebtoken": "^8.3.2",
    "@types/node": "^11.13.7",
    "@types/nodemailer": "^4.6.7",
    "@types/pg": "^7.4.14",
    "@types/sequelize": "^4.27.48",
    "@types/validator": "^10.11.0",
    "nodemon": "^1.18.11",
    "typescript": "^3.4.5"
  },
  "dependencies": {
    "apollo-server": "^2.4.8",
    "apollo-server-express": "^2.4.8",
    "bcrypt": "^3.0.6",
    "cors": "^2.8.5",
    "dotenv": "^7.0.0",
    "express": "^4.16.4",
    "graphql": "^14.2.1",
    "graphql-redis-subscriptions": "^2.1.0",
    "graphql-resolvers": "^0.3.2",
    "ioredis": "^4.9.0",
    "jsonwebtoken": "^8.5.1",
    "nodemailer": "^6.1.0",
    "pg": "^7.9.0",
    "sequelize": "^5.5.0"
  }

[todd]

@TidyIQ It appears you're using the 5.x branch of Sequelize, which bundles its own types. The types installed via @types/sequelize are for 4.x. Indeed, it appears the error you listed above references the actual Sequelize package, not your explicitly installed types from this repository.

I would try removing @types/sequelize from your dependencies to see if that solves your issue. If not, I would open an issue with Sequelize directly.

[TidyIQ]

Yep, you're right. I should have checked the version number in the @types/sequelize description. Thanks, problem solved.

[amhed]

I just:

• Removed @types/sequelize
• Deleted the node_modules folder
• yarn install from scratch

I keep getting the error on the type:

[amhed]

Currently using v5.7.6

[TidyIQ]

Sequelize.Instance no longer exists in v5

I've been trying to get Sequelize to work with Typescript by following their guides for the last 20 or so hours. I'm giving up. I just installed the sequelize-typescript npm package and will try to get it to work that way instead.

[jgreen01su]

@TidyIQ Did sequelize-typescript work for you? I'm running into this same problem.

[TidyIQ]

Yeah it's working perfectly. It's so much simpler to use and easier to understand when you review your code.

[jgreen01su]

Great! I'll use that!

[HammzaHM]

The simplest thing you could do is to remove sequelize v5 and run yarn add sequelize@4 && yarn add @types/sequelize@4.
The issue has been resolved for me with this solution.

[bessam-haj-salem]

Todd you are a genious you saved my life