Type for standard gtag.js event names.
logEvent also accepts any
custom string and interprets it as a custom event name.
Configures Firebase Analytics to use custom
dataLayernames. Intended to be used if
gtag.jsscript has been installed on this page independently of Firebase Analytics, and is using non-default names for either the
gtagfunction or for
dataLayer. Must be called before calling
firebase.analytics()or it won't have any effect.