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+107
-161
+3
-83
src/components/header.tsx
+3
-83
src/components/header.tsx
···
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import { Link, useRouterState } from "@tanstack/react-router";
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import { useQueryClient } from "@tanstack/react-query";
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import { useEffect, useState } from "react";
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import { StatusDot } from "~/components/console/status-dot";
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interface NavItemProps {
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to: string;
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label: string;
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preload?: "intent" | false;
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search?: Record<string, unknown>;
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}
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function NavItem({ to, label, preload, search }: NavItemProps) {
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const state = useRouterState();
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const queryClient = useQueryClient();
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const currentPath = state.location.pathname;
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const isActive = currentPath === to;
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const hasCachedData = queryClient.getQueryCache().getAll().length > 0;
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const isFetching = state.isLoading;
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const showStatus = to !== "/";
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let status: "cached" | "fetching" | "idle" = "idle";
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if (isFetching) {
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status = "fetching";
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} else if (hasCachedData && isActive) {
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status = "cached";
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}
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return (
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<Link
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to={to}
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search={search}
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preload={preload}
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className={`nav-link ${isActive ? "nav-link-active" : ""}`}
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>
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{showStatus && <StatusDot status={status} />}
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<span>{label}</span>
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</Link>
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);
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}
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function ThemeToggle() {
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const [theme, setTheme] = useState<"system" | "light" | "dark">("system");
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const [isClicked, setIsClicked] = useState(false);
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useEffect(() => {
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const saved = localStorage.getItem("theme") as "system" | "light" | "dark" | null;
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if (saved) setTheme(saved);
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}, []);
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useEffect(() => {
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const root = document.documentElement;
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if (theme === "system") {
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root.removeAttribute("data-theme");
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localStorage.removeItem("theme");
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} else {
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root.setAttribute("data-theme", theme);
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localStorage.setItem("theme", theme);
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}
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}, [theme]);
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import { NavItem } from "./nav-item";
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import { ThemeToggle } from "./theme-toggle";
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const cycleTheme = () => {
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setIsClicked(true);
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setTimeout(() => setIsClicked(false), 150);
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setTheme((prev) => (prev === "system" ? "light" : prev === "light" ? "dark" : "system"));
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};
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const icon = theme === "system" ? "◐" : theme === "light" ? "○" : "●";
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return (
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<button
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onClick={cycleTheme}
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className={`nav-link ml-auto ${isClicked ? "theme-toggle-clicked" : ""}`}
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title={`Theme: ${theme} (click to cycle)`}
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aria-label={`Current theme: ${theme}. Click to cycle.`}
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>
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<span className="text-(--accent-default) theme-toggle-icon">{icon}</span>
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<span className="hidden sm:inline">{theme}</span>
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</button>
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);
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}
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export default function Header() {
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export function Header() {
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return (
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<header className="bg-(--bg-secondary) border-b border-(--border-default)">
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<nav className="flex flex-row items-center">
+44
src/components/theme-toggle.tsx
+44
src/components/theme-toggle.tsx
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"use client";
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import { useEffect, useState } from "react";
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export function ThemeToggle() {
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const [theme, setTheme] = useState<"system" | "light" | "dark">("system");
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const [isClicked, setIsClicked] = useState(false);
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useEffect(() => {
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const saved = localStorage.getItem("theme") as "system" | "light" | "dark" | null;
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if (saved) setTheme(saved);
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}, []);
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useEffect(() => {
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const root = document.documentElement;
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if (theme === "system") {
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root.removeAttribute("data-theme");
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localStorage.removeItem("theme");
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} else {
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root.setAttribute("data-theme", theme);
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localStorage.setItem("theme", theme);
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}
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}, [theme]);
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const cycleTheme = () => {
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setIsClicked(true);
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setTimeout(() => setIsClicked(false), 150);
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setTheme((prev) => (prev === "system" ? "light" : prev === "light" ? "dark" : "system"));
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};
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const icon = theme === "system" ? "◐" : theme === "light" ? "○" : "●";
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return (
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<button
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onClick={cycleTheme}
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className={`nav-link ml-auto ${isClicked ? "theme-toggle-clicked" : ""}`}
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title={`Theme: ${theme} (click to cycle)`}
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aria-label={`Current theme: ${theme}. Click to cycle.`}
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>
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<span className="text-(--accent-default) theme-toggle-icon">{icon}</span>
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<span className="hidden sm:inline">{theme}</span>
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</button>
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);
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}
+3
-3
src/routes/__root.tsx
+3
-3
src/routes/__root.tsx
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import { ReactQueryDevtools } from "@tanstack/react-query-devtools";
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import { HeadContent, Outlet, Scripts, createRootRouteWithContext } from "@tanstack/react-router";
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import { TanStackRouterDevtools } from "@tanstack/react-router-devtools";
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import type { QueryClient } from "@tanstack/react-query";
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import { createServerFn } from "@tanstack/react-start";
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import { renderServerComponent } from "@tanstack/react-start/rsc";
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import Header from "~/components/header";
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import { Header } from "~/components/header";
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import type { QueryClient } from "@tanstack/react-query";
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import appCss from "~/styles/global.css?url";
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import { createServerFn } from "@tanstack/react-start";
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interface MyRouterContext {
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queryClient: QueryClient;
+15
-75
src/routes/index.tsx
+15
-75
src/routes/index.tsx
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import { createFileRoute, Link } from "@tanstack/react-router";
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import { createFileRoute } from "@tanstack/react-router";
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import { createServerFn } from "@tanstack/react-start";
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import { renderServerComponent } from "@tanstack/react-start/rsc";
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import { StatusDot } from "~/components/console/status-dot";
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import { ConsoleCard } from "~/components/console/console-card";
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export const Route = createFileRoute("/")({
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component: LandingPage,
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loader: async () => {
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const landingPage = await getLandingPage();
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return { landingPage };
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},
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component: LandingPageComponent,
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});
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interface ExampleItemProps {
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number: string;
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title: string;
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path: string;
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description: string;
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codeSnippet: string;
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}
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const getLandingPage = createServerFn({ method: "GET" }).handler(async () => {
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return renderServerComponent(<LandingPageDocument />);
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});
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function ExampleItem({ number, title, path, description, codeSnippet }: ExampleItemProps) {
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return (
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<Link to={path} className="block no-underline">
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<div className="example-card">
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<div className="example-card__number">Example {number}</div>
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<h3 className="example-card__title">{title}</h3>
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<p className="example-card__description">{description}</p>
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<div className="mt-4 p-3 bg-(--bg-secondary) border border-(--border-default) font-mono text-xs text-(--text-muted) overflow-x-auto">
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<code>{codeSnippet}</code>
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</div>
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</div>
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</Link>
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);
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function LandingPageComponent() {
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const { landingPage } = Route.useLoaderData();
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return <>{landingPage}</>;
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}
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function LandingPage() {
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const examples: ExampleItemProps[] = [
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{
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number: "01",
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title: "Basic",
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path: "/basic",
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description:
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"Baseline implementation with no prefetching. Data loads only when the route renders, demonstrating the default behavior without optimizations.",
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codeSnippet: "useSuspenseQuery({ queryKey, queryFn })",
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},
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{
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number: "02",
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title: "Preloading",
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path: "/preloading",
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description:
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"Route-level prefetch using loader and queryOptions. Data begins loading as soon as navigation starts, reducing perceived latency.",
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codeSnippet: "loader: ({ context }) => {\n void context.queryClient.prefetchQuery(...)\n}",
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},
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{
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number: "03",
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title: "Intent Preloading",
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path: "/intent-preloading",
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description:
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"Hover-based prefetch using preload='intent' on Links. Data starts loading when the user hovers over a link, anticipating their next action.",
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codeSnippet: "<Link preload='intent' to='/route'>...</Link>",
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},
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{
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number: "04",
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title: "Pagination",
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path: "/pagination",
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description:
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"Preloading next and previous pages in paginated lists. Adjacent pages are prefetched so navigation feels instant.",
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codeSnippet: "preload={props.prefetch}\nto={props.to}\nsearch={{ offset: props.nextOffset }}",
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},
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{
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number: "05",
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title: "Filters",
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path: "/filters",
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description:
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"Search with URL-driven state and prefetching. Filter changes update the URL and trigger data refetching with intelligent caching.",
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codeSnippet: "validateSearch: searchParamsSchema",
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},
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{
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number: "06",
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title: "Debounced Preload Filters",
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path: "/debounced-preload-filters",
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description:
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"Advanced filter prefetch with debouncing. Prevents excessive prefetch requests while typing by waiting for a pause in input.",
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codeSnippet: "useDebounce(value, delay)\n// Preload only after pause",
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},
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];
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function LandingPageDocument() {
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return (
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<main className="min-h-screen bg-(--bg-primary)">
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{/* Hero Section */}