``Error Message: TypeORM - could not establish database connection

I encountered an issue while running my project built with Typescript, Typeorm, and Express. The error message received when running the dev script was: 

connectionNotFoundError: Connection "default" was not found

The content of my ormconfig.json file is as follows:

{
  "name": "default",
  "type": "postgres",
  "host": "localhost",
  "port": 5432,
  "username": "postgres",
  "password": "docker",
  "database": "clean-node-api",
  "synchronize": true,
  "logging": true,
  "entities": [
    "./src/infra/typeorm/entities/*.ts"
  ],
  "cli": {
    "migrationsDir": "./src/infra/typeorm/migrations"
  }
}

You can find the source code in this repository: https://github.com/thuram/typescript-api-with-tdd

typescriptexpresstypeorm

Answer №1

After cloning your repository and running the code, I encountered a backtrace:

ConnectionNotFoundError: Connection "default" was not found.
    at new ConnectionNotFoundError (/Users/lithium/develop/typescript-api-with-tdd/src/error/ConnectionNotFoundError.ts:8:9)
    at ConnectionManager.get (/Users/lithium/develop/typescript-api-with-tdd/src/connection/ConnectionManager.ts:40:19)
    at Object.getRepository (/Users/lithium/develop/typescript-api-with-tdd/src/index.ts:287:35)
    at new UserRepository (/Users/lithium/develop/typescript-api-with-tdd/src/infra/typeorm/repositories/UserRepository.ts:14:26)
    at Object.exports.makeCreateUser (/Users/lithium/develop/typescript-api-with-tdd/src/main/factories/useCases/user/CreateUserFactory.ts:5:26)
    at Object.exports.makeSignUpController (/Users/lithium/develop/typescript-api-with-tdd/src/main/factories/controllers/user/SignUpControllerFactory.ts:6:31)
    at Object.<anonymous> (/Users/lithium/develop/typescript-api-with-tdd/src/main/routes/SignUp.ts:5:26)
    at Module._compile (internal/modules/cjs/loader.js:1201:30)
    at Module._compile (/Users/lithium/develop/typescript-api-with-tdd/node_modules/source-map-support/source-map-support.js:547:25)
    at Module.m._compile (/private/var/folders/fx/7f3mc02s4lxbzjmzvw4cmknh0000gn/T/ts-node-dev-hook-1775948954112352.js:57:33)
[ERROR] 10:41:29 ConnectionNotFoundError: Connection "default" was not found.

The error originated from UserRepository.ts:14:26),

  constructor() {
    this.ormRepository = getRepository(User);
  }

It seems that you are attempting to create a repository or manager without establishing the connection. Placing the statement 

const repo = await getRepository(User);
within a function should resolve this issue!

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