Creation Data2.11.0+

moment().creationData();

After a moment object is created, all of the inputs can be accessed withcreationData() method:

moment("2013-01-02", "YYYY-MM-DD", true).creationData() === {
    input: "2013-01-02",
    format: "YYYY-MM-DD",
    locale: Locale obj,
    isUTC: false,
    strict: true
}