如何使用Typeorm创建到Postgres的连接

{
  "type": "postgres",
  "host": "localhost",
  "port": 5432,
  "username": "your_username",
  "password": "your_password",
  "database": "your_database_name",
  "synchronize": true,
  "logging": true,
  "entities": [
    "src/entities/**/*.ts"
  ],
  "migrations": [
    "src/migrations/**/*.ts"
  ],
  "subscribers": [
    "src/subscribers/**/*.ts"
  ],
  "cli": {
    "entitiesDir": "src/entities",
    "migrationsDir": "src/migrations",
    "subscribersDir": "src/subscribers"
  }
}

import { Entity, PrimaryGeneratedColumn, Column } from "typeorm";

@Entity()
export class User {
  @PrimaryGeneratedColumn()
  id: number;

  @Column()
  name: string;

  @Column()
  age: number;
}

import { createConnection } from "typeorm";
import { User } from "./entities/User";

async function main() {
  const connection = await createConnection();
  const userRepository = connection.getRepository(User);

  // 在这里可以执行各种数据库操作，例如插入、查询、更新、删除等

  await connection.close();
}

main().catch((error) => console.error(error));