Bidirectional LLM API adapter with IR pattern. Seamlessly convert between OpenAI, Anthropic, DeepSeek, and more. TypeScript, zero deps | 基于 IR 模式的双向 LLM API 适配器,无缝转换 OpenAI、Anthropic、DeepSeek 等多个提供商。TypeScript类型支持、零依赖。