Support Anthropic Models

[nickchecan]

This pull request adds full support for Anthropic's Claude models by implementing an AnthropicAdapter, updating the adapter factory, and introducing comprehensive tests. It also adds the Anthropic SDK as a dependency and ensures the new functionality is covered by both unit and integration tests.

Anthropic Adapter Implementation and Integration:

• Implemented the AnthropicAdapter in src/anthropic/anthropic-adapter.ts to support both streaming and one-shot generation using the Anthropic SDK, handling error cases and response formatting.
• Updated the AdapterFactory (src/adapter-factory.ts) to instantiate AnthropicAdapter for models starting with claude-, enabling seamless model selection between OpenAI and Anthropic providers. [1] [2]

Dependency and Configuration Updates:

• Added @anthropic-ai/sdk as a dependency in package.json.
• Updated ESLint configuration to ignore the dist/ directory.

Testing Enhancements:

Unit Tests:

• Added and extended unit tests for the AnthropicAdapter to verify correct API calls, error handling, and response formatting (test/unit/anthropic/anthropic-adapter.spec.ts).
• Updated adapter-factory.spec.ts to include tests for Anthropic model detection and instantiation, ensuring the factory creates the correct adapter and passes parameters properly. [1] [2] [3] [4] [5] [6]

Integration Tests:

• Introduced integration tests for Anthropic models (test/integration/anthropic/anthropic.it.spec.ts), validating both one-shot and streaming interactions with multiple Claude models.

[github-actions]

🎉 This PR is included in version 1.0.3 🎉

The release is available on:

• npm package (@latest dist-tag)
• GitHub release

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