function onRetroactiveReadyStateChangeimport { onRetroactiveReadyStateChange } from "https://deno.land/x/frugal@0.9.1/src/runtime/svelte/hydrate/mod.ts"; onRetroactiveReadyStateChange(readyState: DocumentReadyState, callback: () => void)ParametersreadyState: DocumentReadyStatecallback: () => void