Encode Bytes of Json String with omiting empty fields

main.go

//delete the key if valueOf type is empty
reader := strings.NewReader(string(message))
	// writer := os.Stdout
	dec := json.NewDecoder(reader)
	// enc := json.NewEncoder(writer)
	for {
		var m map[string]interface{}
		if err := dec.Decode(&m); err == io.EOF {
			break
		} else if err != nil {
			log.Fatal(err)
		}

		for k, i := range m {
			if reflect.ValueOf(i).IsZero() {
				delete(m, k)
			}
		}
		log.Printf("%+v", m)
		// if err := enc.Encode(&m); err != nil {
		// 	log.Println(err)
		// }
	}