Have simple function which returns an error:

ERROR: date.toLocaleDateString is not a function

TypeError: date.toLocaleDateString is not a function

    at FormatTime (../Src/rootdialog.js:87:58)

Function definition:

function FormatTime(time, prefix = ) {

    var date = Date.parse(time);

    return ((typeof time != undefined) ? prefix + date.toLocaleDateString()  : );

}

Function receives Date object as input however even explicit conversion to Date with Date.parse() does not help. Using Node.js 8.x. Any solution?

P.S. Issue was caused by BotBuilder architecture.