Error type (#4)

* Error type checker * Update README.md
golang-cz · Aug 23, 2023 · eb6157d · eb6157d
1 parent a002ce2
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diff --git a/README.md b/README.md
@@ -6,7 +6,7 @@
 `devslog` is zero dependency custom logging handler for Go's standard [`log/slog`](https://pkg.go.dev/log/slog) package that provides structured logging with colorful and indented structure for developing.
 
 ### Develop with this output
-![image](https://github.com/golang-cz/devslog/assets/17728576/be0eca2c-192b-442f-b3c0-eecef107871a)
+![image](https://github.com/golang-cz/devslog/assets/17728576/0bae7ec7-0513-41a4-9682-0e0fc74747e7)
 
 ### Instead of these outputs
 `TextHandler`

diff --git a/devslog.go b/devslog.go
@@ -233,6 +233,13 @@ func (h *developHandler) colorize(buf []byte, as attributes, level int, groups [
 			val = cs(val, fgCyan)
 		case slog.KindAny:
 			a := a.Value.Any()
+			err, isError := a.(error)
+			if isError {
+				mark = cs("E", fgRed)
+				val = csb(fmt.Sprintf(" %v ", err), fgBlack, bgRed)
+				break
+			}
+
 			jsonBytes, err := json.Marshal(a)
 			if err != nil {
 				break