webtyp.com/msgtype

msgtype

Message classification (info, error, success, warning...) for logs and UI. This package is specifically for classifying messages and forms its own module separate from formatting.

Why

fmt.MessageType was split into its own module webtyp.com/msgtype because classifying log/UI messages is a separate responsibility from formatting, and it often needs extending (e.g., SSE network errors, Pub/Sub events) without forcing a new release of webtyp.com/fmt for the whole ecosystem.

Wire compatibility

The numeric values of the constants (Normal = 0 … Response = 13) travel over SSE and are stored by consumers. Never reorder or renumber them. A new type is appended at the end.

Migration Guide

Old (webtyp.com/fmt)	New (webtyp.com/msgtype)
fmt.MessageType	msgtype.Type
fmt.Msg.Info (etc.)	msgtype.Info (etc.)
s, t := fmt.Convert(x).StringType()	s, t := x, msgtype.Detect(x)
t.IsError() (etc.)	t == msgtype.Error
t.IsNetworkError()	deleted

Usage Example

package main

import (
    "log"
    "webtyp.com/msgtype"
)

func handleError(message string) {
    log.Println("Handling error:", message)
}

func logMessage(message string, msgType msgtype.Type) {
    log.Printf("[%s] %s\n", msgType.String(), message)
}

func progressCallback(message string) {
    msgType := msgtype.Detect(message)
    if msgType == msgtype.Error {
        handleError(message)
    } else {
        logMessage(message, msgType)
    }
}