It's being used by GPIIStore here,
https://github.com/chrispetsos/prefsEditors/blob/GPII-667/src/shared/common/GpiiStore.js#L199
Apart from this, i thought it would be good to have this globally available as a Singleton since many components might be interested in the information it provides. It could also be used in the future for asserting whether changes have been made by the user when trying to leave the page with unsaved changes. Also, currently it needs to be plugged to a prefsEditor in order to be functional so it is not intended to be merged by several grades in order to be used.
How do these sound?