[JS] Genkit requires `skipLibCheck` to work

[inlined]

Describe the bug
Consumers of Genkit must use skipLibCheck to use Genkit. This also affects authors of Genkit as turning on skipLibCheck has hidden compiler errors between packages in this workspace

To Reproduce
Use Genkit in an application that does not have skipLibCheck: true

Expected behavior
Ideally, skipLibCheck is not forced onto our customers

Runtime (please complete the following information):

• OS: MacOS
• Version 14.7.2

Node version

• 22

Additional context
Currently compiled with skipLibCheck off (will be updated as fixes are committed):

• genkit
• @genkit-ai/ai
• @genkit-ai/core
• @genkit-ai/checks
• @genkit-ai/chroma
• @genkit-ai/dev-local-vectorstore
• @genkit-ai/dotprompt
• @genkit-ai/evaluators
• @genkit-ai/express
• @genkit-ai/firebase
• @genkit-ai/google-cloud
• @genkit-ai/googleai
• @genkit-ai/langchain
• @genkit-ai/mcp
• @genkit-ai/ollama
• @genkit-ai/pinecone
• @genkit-ai/vertexai

[chrisraygill]

@inlined what's the latest status here? Anything to do ahead of 1.0?

[inlined]

Just committed a change and updated the checklist. firebase and google-cloud should work now that the long maintainers committed a fix, but it broke in CI/CD and I reverted. We can follow up with fixes for those. As a chore, we can also file bugs or suggest fixes to the other SDKs. Our tsconfig lists the errors we're running into in each library.