Add TypeScript types for config

**Problem**
When working with components, the error messages could be more descriptive.

**Suggestion**
Improve error handling and add detailed error messages.

**Context**
This would help with debugging and maintenance.

The issue names TypeScript configuration types and more descriptive component error messages, but it does not identify files, tests, or an entry point. Start by locating the configuration type definitions and component error-handling code; done should mean the configuration is typed and errors provide the requested debugging detail.

Written by the indexing model from the issue text.