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v0.3.0 - Alignment with Python/Rust runtime

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@hiddenpath hiddenpath released this 21 Feb 08:20
· 31 commits to main since this release
v0.3.0
ebd1d7b

ai-lib-ts v0.3.0 Release Notes

Release Date: 2026-02-21

Summary

v0.3.0 completes the 9-iteration alignment plan with ai-lib-python and ai-lib-rust runtimes. The TypeScript runtime now provides feature parity in resilience, routing, multimodal, negotiation, extras, protocol V2, streaming cancellation, plugins, and MCP tool bridging.

New Modules

Resilience

  • RetryPolicy: Exponential backoff, jitter, protocol-driven config
  • CircuitBreaker: Fault isolation (closed → open → half-open)
  • RateLimiter: Token bucket (fromRps, fromRpm, unlimited)
  • Backpressure: Semaphore-based concurrency limiting
  • Integrated into HttpTransport via optional ResilienceConfig

Routing

  • ModelManager: Model registration, selection, capability filtering
  • CostBasedSelector, QualityBasedSelector, RoundRobinSelector
  • ModelArray: Load balancing across endpoints (health-aware)
  • modelSupports, recommendFor

Negotiation

  • FallbackChain: Sequential failover with fallbackable error detection
  • firstSuccess: Parallel execution, return first success
  • parallelAll: Aggregate all results

Multimodal

  • SttClient: Speech-to-text (OpenAI Whisper–style API)
  • TtsClient: Text-to-speech
  • RerankerClient: Document relevance scoring (Cohere-style)
  • ContentBlock: VideoBlock, OmniBlock extensions

Extras

  • EmbeddingClient: OpenAI-style embeddings API
  • MemoryCache: TTL + LRU in-memory cache
  • jsonObjectConfig, jsonSchemaConfig, toOpenAIResponseFormat
  • estimateTokens, estimateCost

Protocol V2

  • ManifestV2 types (three-ring structure)
  • parseManifestV2, loadManifestV2FromUrl, loadManifestV2FromPath

Streaming

  • CancelHandle: Abort streaming via cancel()
  • executeStreamWithCancel(): Returns { stream, cancelHandle }
  • Transport executeStream accepts optional AbortSignal

Plugins

  • PluginRegistry: Plugin lifecycle, request/response processing
  • HookManager: Event-driven hooks (pre_request, post_response, etc.)

MCP

  • McpToolBridge: Convert MCP tools ↔ AI-Protocol ToolDefinition
  • Namespace, allow/deny filters, protocol call ↔ MCP invocation mapping

Breaking Changes

None. All additions are additive.

Migration from v0.1.0

No migration required. New modules are opt-in. Existing code continues to work.

Test Coverage

  • 111 tests passing (6 integration tests skipped without MOCK_HTTP_URL)
  • New test files: resilience, routing, negotiation, multimodal, extras, streaming, plugins, protocol-v2, mcp

Dependencies

No new runtime dependencies. Uses native fetch, FormData, AbortController.

Related

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