Issue with nx-Monorepo when using TypeORM migrations

After numerous attempts on my own, I've come to the realization that I may need some assistance. My project is a nx-monorepo setup with an angular-frontend and nestjs backend. Recently, I integrated a Postgres-SQL database using TypeORM. The connectivity to the database, incoming API calls, and overall functionality seem to be in order.

However, I'm encountering issues when trying to generate a migration script. In an effort to resolve this, I added a run-command for my backend project:


        "generate-migration": {
          "builder": "@nrwl/workspace:run-commands",
          "outputs": [],
          "options": {
            "command": "ts-node ../../node_modules/.bin/typeorm migration:generate -n",
            "cwd": "apps/api"
          }
        }

Executing the command using "npm run api:generate-migration" results in the following error:

Error during migration generation: /apps/api/src/model/base.entity.ts:1 import { __decorate, __metadata } from "tslib"; ^^^^^^

SyntaxError: Cannot use import statement outside a module at wrapSafe (node:internal/modules/cjs/loader:1024:16) ... ERROR: Something went wrong in @nrwl/run-commands - Command failed: ts-node ../../node_modules/.bin/typeorm migration:generate -n

In my ormConfig.json file, the relevant details are as follows:


        {
          ...
          "type": "postgres",
          "migrationsTableName": "migration",  
          "migrations": ["src/migration/*.ts"],
          "cli": {
            "migrationsDir": "src/migration"
          },
          "ssl": false
        }

If anyone has insights or solutions regarding this issue, your help would be greatly appreciated! Please :)

typescriptmigrationnestjstypeormmonorepo

Answer №1

Utilizing NX@13, NestJS@8, and 

<a href="/cdn-cgi/l/email-protection" class="__cf_email__" data-cfemail="c195b8b1a48e938c81">[email protected]</a>
, I have successfully developed a backend service.

In the configuration file project.json for game-api, I've included commands like the following:

"generate-migration": {
      "builder": "@nrwl/workspace:run-commands",
      "outputs": [],
      "options": {
        "command": "ts-node --project tsconfig.app.json ../../node_modules/.bin/typeorm migration:generate --pretty -f .env.local",
        "cwd": "apps/game-api"
      }
    },

Explore the code repository here: https://github.com/coinconket/conketkemon

Answer №2

If you're seeking assistance, the following information may be valuable. For the most recent nx@^14, @nestjs/*@^9, and typeorm@~0.3:

within your project.json. Remember, 

"apps/<app-name>"
is also applicable to 
"libs/<lib-name>"

"typeorm": {
      "builder": "@nrwl/workspace:run-commands",
      "outputs": [],
      "options": {
        "command": "ts-node --project tsconfig.json <path-to-node_modules>/typeorm/cli",
        "cwd": "apps/<app-name>"
      }
    },
"mig-gen": {
      "builder": "@nrwl/workspace:run-commands",
      "outputs": [],
      "options": {
        "command": "nx run <app-name>:typeorm migration:generate <path-to-migration>/{args.name} -d <path-to-typeorm-config>/typeorm.config.ts",
        "cwd": "apps/<app-name>"
      }
    },

In your typeorm.config.ts

import { DataSource, DataSourceOptions } from 'typeorm';
import { config } from 'dotenv';
import { join } from 'path';

config({ path: '<path-to-env>/.env' });

const { DB_TYPE, DB_HOST, DB_USER, DB_PASS, DB_PORT, DB_NAME } =
  process.env;

export default new DataSource({
  type: DB_TYPE,
  host: DB_HOST,
  port: Number(DB_PORT),
  username: DB_USER,
  password: DB_PASS,
  database: DB_NAME,
  entities: [join(__dirname, '<path-to-entities>/*.entity.{ts,js}')],
  migrations: [join(__dirname, '<path-to-migration>/*{.ts,.js}')],
  synchronize: false,
} as DataSourceOptions);

ensure that in your 

<path-to-app>/tsconfig.json

you have set 

"emitDecoratorMetadata": true
under compilerOptions{...}. Other properties like module, types, and target might require configuration as well. Refer to your 
<root-workspace>/tsconfig.base.json
and documentation at https://www.typescriptlang.org/tsconfig for guidance

Lastly, execute the following command in your terminal to generate your migration file

nx run <app-name>:mig-gen --name=whatever-makes-you-happy

Answer №3

After including 

"module": "CommonJS"
within the compilerOptions section of tsconfig.app.json file in the corresponding nx application, the problem was resolved successfully.

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