package mux import ( "context" "encoding/json" "net/http" ) var DefaultErrorHandler func(err error) Renderer = func(err error) Renderer { return RendererFunc(func(ctx context.Context, w http.ResponseWriter) error { return json.NewEncoder(w).Encode(errorStruct{ Message: err.Error(), }) }) } type errorStruct struct { Message string `json:"message"` }