Description & motivation

Errors derived from vError can attach properties to info parameter of the options object when constructed.

These info properties can now be used to populate a string template in the error's message. The message template follows pino pretty format.

This reduces the cardinality of errors, enabling similar errors to be simply searchable using the template string.

The code is modified from pino-pretty repository, licensed under an MIT license.

Changes:

• The server's default error handler will populate the error message template before returning the error to the client.
• Tests are included for the message templating.

Additional minor changes:

• The status code is included in the response log message template by the pino http logger.

To-do before merge:

Validation of changes:

The server logs the template and properties separately:

The client sees the formatted message, with the template populated with the data:

Checklist:

• My pull request follows the guidelines in the Contributing guide?
• My pull request does not duplicate any other open Pull Requests for the same update/change?
• My commits are related to the pull request and do not amend unrelated code or documentation.
• My code follows a similar style to existing code.
• I have added appropriate tests.
• I have updated or added relevant documentation.

References