blyp-express

name	blyp-express
description	Portable Blyp add-on skill for Express apps using @blyp/core/express, req.blypLog, and createExpressErrorLogger() in the correct middleware order.

Blyp Express

What this skill is for

Use this add-on when the project runs on Express and needs Blyp middleware, request logging, or HTTP error logging.

When to use it

• Adding Blyp to an Express app or router
• Reading the request logger from req.blypLog
• Enabling browser ingestion in an Express server
• Fixing middleware order so Blyp can emit http_error records

Blyp-specific rules and constraints

• Install blyp-core first.
• Import from @blyp/core/express.
• Use createLogger() as standard Express middleware.
• Use req.blypLog for request-scoped logging.
• createExpressErrorLogger() must run before the app's final error handler so Blyp can capture thrown errors on res.locals.

Required implementation steps

1. Import createLogger and createExpressErrorLogger from @blyp/core/express.
2. Mount createLogger(...) before routes that need request-scoped logging.
3. Replace ad hoc request log access with req.blypLog.
4. If browser ingestion is enabled, keep the configured path aligned with the mounted Blyp middleware behavior.
5. Mount createExpressErrorLogger() before the terminal error responder middleware.
6. Leave the application's final error serialization in place after Blyp's error logger middleware.

Verification checklist

• The server imports from @blyp/core/express
• Routes log through req.blypLog
• createLogger() runs before routes
• createExpressErrorLogger() runs before the final error handler
• Error responses still work after Blyp middleware is inserted

References

• Import path: @blyp/core/express
• Main APIs: createLogger(), createExpressErrorLogger()
• Request logger: req.blypLog