Shared data in functional programming

I have been working on a project in JavaScript which requires a data structure (read only), to be shared between two functions.

var mySharedData = ['hours', 'minutes', 'seconds'];

Now I have two functions that need access to this (static) read only data structure.

var sampleFunction1 = function(userSuppliedData) {
    //map over user data applying mySharedData to it
};

var sampleFunction2 = function(userSuppliedData) {
    //reduce user data also accessing mySharedData
};

Since this is JavaScript and both functions are in the same scope I could just "cheat" and leverage the bad scoping of var and access the shared data in both functions but I don't feel like this is the proper way of doing it.

I also considered currying both functions and just passing the shared data as the first argument like so:

var mySharedData = ['hours', 'minutes', 'seconds'];

var sampleFunction1 = _.curry(function(sharedData, userSuppliedData) {
    //map over user data applying sharedData to it
})(mySharedData);

var sampleFunction2 = _.curry(function(sharedData, userSuppliedData) {
    //reduce user data also accessing sharedData
})(mySharedData);

What is the recommended way of sharing data between functions? Should this even be done in functional programming or am I making my functions impure with shared data structures?