Trigger javascript on clicking any page link, but before the page content loads?

[merefield (Robert)]

@Johani

// this fires right before the transition
api.modifyClass("route:application", {
  pluginId: "some-name",
  actions: {
    willTransition() {

This doesn’t seem to fire on entering a Topic from a Topic List?

I’ve also tried adding one:

      api.modifyClass("route:topic", {
        pluginId: PLUGIN_ID,
        actions: {
          willTransition() {

but that doesn’t fire either.