fix: type safety, broken build:prod, stale deps, OpenRouter provider

[ruvnet]

Summary

Addresses the P0/P1 items from the post-2.1.2 roadmap (issue #7): fixes broken tooling, updates stale deps with security patches, upgrades the deprecated Anthropic model, adds the requested OpenRouter provider (issue #1), and cleans up TypeScript configuration.

Dependency updates

Package	Old	New	Reason
agentdb	^1.3.9	^1.6.1	Latest stable (was 3 minor versions behind)
onnxruntime-web	^1.20.1	^1.26.0	Latest stable; 1.20 had WASM backend bugs
pino	^8.19.0	^9.14.0	pino@9 is LTS; ships its own .d.ts
pino-pretty	^11.0.0	^13.1.3	Required for pino@9 compatibility
reflect-metadata	^0.2.1	^0.2.2	Latest patch
zod	^3.22.4	^3.25.76	Latest 3.x stable (avoids v4 breaking API changes)
eslint (dev)	^8.24.1	^8.57.1	Latest 8.x with all fixes

Removed @types/pino from devDependencies — pino@9 ships its own bundled types; @types/pino@7 conflicts.

Bug fixes

build:prod was broken — the build:prod script referenced a non-existent tsconfig.prod.json. Added tsconfig.prod.json extending the base config with production-appropriate settings (no sourcemaps, comments stripped, tests excluded).

lint script glob not quoted — eslint src/**/*.ts is not expanded by npm's shell on many platforms. Changed to eslint 'src/**/*.ts' (single-quoted) so the glob is passed to ESLint rather than expanded by sh.

tsconfig.json deprecated moduleResolution — "node" (alias node10) is deprecated in TypeScript and will error in TS 6. Migrated to "node16" and bumped target from es2017 to es2020.

Deprecated Anthropic model — AnthropicLM defaulted to claude-3-sonnet-20240229 which Anthropic deprecated in 2025. Updated default to claude-3-5-sonnet-20241022.

New feature: OpenRouterLM provider (fixes #1)

Added src/lm/providers/openrouter.ts — an OpenAI-compatible driver that routes to 200+ models through OpenRouter. Exported from the dspy.ts barrel.

import { OpenRouterLM, configureLM } from 'dspy.ts';

configureLM(new OpenRouterLM({
  apiKey: process.env.OPENROUTER_API_KEY!,
  model: 'anthropic/claude-3-5-sonnet',   // or any of 200+ models
  siteUrl: 'https://my-app.com',           // optional, for attribution
}));

Supports model, temperature, maxTokens, topP, stopSequences — the full GenerationOptions surface.

Version

Bumped to 2.2.1 (currently published at 2.2.0).

Test plan

• npm run build — compiles without errors
• npm run build:prod — uses new tsconfig.prod.json, succeeds
• npm run lint — ESLint processes files with quoted glob
• npm run typecheck — no type errors with node16 moduleResolution
• npm test — all existing tests pass
• OpenRouterLM can be instantiated and exported from 'dspy.ts'
• AnthropicLM defaults to claude-3-5-sonnet-20241022

🤖 Generated with claude-flow