Error mapping

httpx.ErrorMapper links application errors to HTTP status codes. If a handler returns an error present in the map, the corresponding status and JSON payload are sent.

httpx.ErrorMapper[types.ErrNoteNotFound] = httpx.Error{
    Message:    "note not found",
    Code:       "NOTE_NOT_FOUND",
    StatusCode: http.StatusNotFound,
}

For any other error, httpx.DefaultHTTPError produces a 500 Internal Server Error or a validation response when coretypes.ValidationError is returned.