Method constructor

packages/core/src/MikroORM.ts:152–171

* Synchronous variant of the `init` method with some limitations: * - folder-based discovery not supported * - ORM extensions are not autoloaded * - when metadata cache is enabled, `FileCacheAdapter` needs to be explicitly set in the config

(options: Partial<Options<Driver, EM, Entities>>)

   * - when metadata cache is enabled, `FileCacheAdapter` needs to be explicitly set in the config
   */
  constructor(options: Partial<Options<Driver, EM, Entities>>) {
    const env = loadEnvironmentVars();
    options = options.preferEnvVars ? Utils.merge(options, env) : Utils.merge(env, options);
    this.config = new Configuration(options);
    const discovery = this.config.get('discovery');
    this.driver = this.config.getDriver();
    this.#logger = this.config.getLogger();
    this.#logger.log('info', `MikroORM version: ${colors.green(Utils.getORMVersion())}`);
    this.#discovery = new MetadataDiscovery(new MetadataStorage(), this.driver.getPlatform(), this.config);
    this.driver.getPlatform().init(this as unknown as MikroORM);

    for (const extension of this.config.get('extensions')) {
      extension.register(this as unknown as MikroORM);
    }

    if (!discovery.skipSyncDiscovery) {
      this.#metadata = this.#discovery.discoverSync();
      this.createEntityManager();
    }
  }

  /**
   * Connects to the database.