typeorm: TypeORM does not work with Typscript and NestJS

TypeORM definitely works with Typescript and NestJs, I am currently using it for my project and have used it with previous projects.

You haven’t provided your typeorm datasource so it’s hard to even begin helping you debug your DataSourceOptions.

Here is an example of my data-source.ts file in db/

import { DataSource, DataSourceOptions } from 'typeorm';

export const dataSourceOptions: DataSourceOptions = {
  type: 'postgres',
  host: process.env.POSTGRES_HOST || 'localhost',
  port: Number(process.env.POSTGRES_PORT) || 5432,
  username: process.env.POSTGRES_USER
  password: process.env.POSTGRES_PASSWORD
  database: process.env.POSTGRES_DB
  entities: ['dist/libs/common/src/entities/*.entity{.ts,.js}'],
  migrations: ['dist/db/migrations/*{.ts,.js}'],
  migrationsTableName: 'migrations',
  // logging: true, // Enable if require to see DB queries/logs
};

// Used by TypeORM CLI for migrations
const dataSource = new DataSource(dataSourceOptions);

export default dataSource;

Here is an example of my migration scripts in package.json

  "build:migrations": "npx tsc -p db/tsconfig.app.json",
  "typeorm": "npx typeorm-ts-node-commonjs -d dist/db/data-source.js",
  "migration:generate": "npm run typeorm migration:generate",
  "migration:create": "npm run typeorm -- migration:create",
  "migration:run": "npm run typeorm -- migration:run",

Here is an example of how I use them:

1. Build the migration dependencies: npm run build:migrations
2. Generating migrations based on a schema: npm run migration:generate -- db/migrations/<name of migration>