package pkging import ( "encoding/json" "time" ) const timeFmt = time.RFC3339Nano type ModTime time.Time func (m ModTime) MarshalJSON() ([]byte, error) { t := time.Time(m) return json.Marshal(t.Format(timeFmt)) } func (m *ModTime) UnmarshalJSON(b []byte) error { t := time.Time{} if err := json.Unmarshal(b, &t); err != nil { return err } (*m) = ModTime(t) return nil }