.env.dev

TYPEORM_MIGRATION = ./src/database/migrations/*.ts
TYPEORM_ENTITIES = ./src/models/*.ts
TYPEORM_MIGRATION_DIR = ./src/database/migrations

.env.production

TYPEORM_MIGRATION = ./dist/database/migrations/*.js
TYPEORM_ENTITIES = ./dist/models/*.js
TYPEORM_MIGRATION_DIR = ./dist/database/migrations

ormconfig.js

const dotevnt = require("dotenv");

dotevnt.config({
  path: process.env.NODE_ENV === "dev" ? ".env.dev" : ".env.production",
});

module.exports = {
  type: "postgres",
  host: "localhost",
  port: 5432,
  username: "",
  password: "",
  database: "",
  migrations: [process.env.TYPEORM_MIGRATION],
  entities: [process.env.TYPEORM_ENTITIES],
  cli: {
    migrationsDir: process.env.TYPEORM_MIGRATION_DIR,
  },
};

package.json

 "scripts": {
    "build": "NODE_ENV=production tsc --target ES5 --experimentalDecorators --emitDecoratorMetadata",
    "dev:server": "NODE_ENV=dev ts-node-dev --transpileOnly --ignore-watch node_modules src/server.ts"
  },