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Page tracking in Sapper
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// stores/location.ts | |
import { writable, derived } from "svelte/store"; | |
import { beforeUpdate } from "svelte"; | |
export interface LocationStore { | |
current: Location | undefined; | |
previous: Location | undefined; | |
} | |
export const location = writable<LocationStore>({ | |
current: undefined, | |
previous: undefined, | |
}); | |
export const routeHasChanged = derived(location, ($l) => { | |
if (!$l.previous || !$l.current) return true; | |
if ($l.previous.pathname !== $l.current.pathname) return true; | |
return false; | |
}); | |
export function trackLocation(): void { | |
beforeUpdate(() => { | |
if (typeof window !== "undefined") { | |
location.update((l) => { | |
return { | |
previous: l.current, | |
current: { ...window.location }, | |
}; | |
}); | |
} | |
}); | |
} | |
// in _layout.svelte | |
import { trackLocation } from "../stores/location"; | |
trackLocation(); | |
// wherever I wanna do something on route change (in my case, sending tracking events to an analytics endpoint | |
afterUpdate(() => { | |
if ($routeHasChanged) { | |
console.log("route changed, do the thing"); | |
} else { | |
console.log("route did not in fact change (or maybe only the search or hash changed)"); | |
} | |
}); |
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how is work on svelte kit ?