Method has

ui/src/protocol/registry.ts:133–135

* 检查组件是否已注册 * * @param typeName - 组件类型名称 * @returns 是否已注册

(typeName: string)

   * @returns 是否已注册
   */
  has(typeName: string): boolean {
    return this.components.has(typeName);
  }

  /**
   * 冻结注册表