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import type { ProfilerOnRenderCallback } from "react";
import {
DATASET_SIZE,
calculateSummary,
createGalleryImages,
filterAndSortRows,
generatePortfolioRows
} from "../../benchmark/src/data";
import type {
AccountTier,
FilterState,
Region,
SortDirection,
SortKey
} from "../../benchmark/src/data";
import type {
BenchmarkScenarioId,
InteractionMeasure,
ProfilerSample
} from "../../benchmark/src/profiling";
import { measureInteraction, toProfilerSample } from "../../benchmark/src/profiling";
import { useDebouncedValue } from "../../benchmark/src/useDebouncedValue";
import { usePersistentTheme } from "../../benchmark/src/usePersistentTheme";
import { BenchmarkPanel } from "./components/BenchmarkPanel";
import { ControlPanel } from "./components/ControlPanel";
import { ImageGallery } from "./components/ImageGallery";
import { KpiStrip } from "./components/KpiStrip";
import { VirtualizedDataTable } from "./components/VirtualizedDataTable";
const HeavyRevenueChart = lazy(() => import("./components/HeavyRevenueChart"));
const TEST_ROW_COUNT = 160;
function resolveRowCount() {
Eif (import.meta.env.MODE === "test") {
return TEST_ROW_COUNT;
}
const requestedRows = Number(new URLSearchParams(window.location.search).get("rows"));
if (Number.isInteger(requestedRows) && requestedRows >= 100 && requestedRows <= DATASET_SIZE) {
return requestedRows;
}
return DATASET_SIZE;
}
const ROW_COUNT = resolveRowCount();
function scrollBenchmarkTable(selector: string) {
const table = document.querySelector<HTMLElement>(selector);
table?.scrollTo?.({ top: table.scrollTop > 0 ? 0 : 9_000, behavior: "auto" });
}
export default function App() {
const [rows, setRows] = useState(() => generatePortfolioRows(ROW_COUNT));
const [queryInput, setQueryInput] = useState("");
const [region, setRegion] = useState<Region | "all">("all");
const [tier, setTier] = useState<AccountTier | "all">("all");
const [sortKey, setSortKey] = useState<SortKey>("riskScore");
const [sortDirection, setSortDirection] = useState<SortDirection>("desc");
const [showChart, setShowChart] = useState(false);
const [showGallery, setShowGallery] = useState(true);
const [visibleRowCount, setVisibleRowCount] = useState(0);
const [samples, setSamples] = useState<ProfilerSample[]>([]);
const [interactions, setInteractions] = useState<InteractionMeasure[]>([]);
const samplesRef = useRef<ProfilerSample[]>([]);
const lastPublishRef = useRef(0);
const suppressNextPublishRef = useRef(false);
const { theme, toggleTheme } = usePersistentTheme();
const debouncedQuery = useDebouncedValue(queryInput, 160);
const appliedFilters = useMemo<FilterState>(
() => ({
query: debouncedQuery,
region,
tier,
sortKey,
sortDirection
}),
[debouncedQuery, region, sortDirection, sortKey, tier]
);
const controlFilters = useMemo<FilterState>(
() => ({
...appliedFilters,
query: queryInput
}),
[appliedFilters, queryInput]
);
const filteredRows = useMemo(() => filterAndSortRows(rows, appliedFilters), [appliedFilters, rows]);
const summary = useMemo(() => calculateSummary(filteredRows), [filteredRows]);
const galleryImages = useMemo(() => createGalleryImages(12), []);
const publishProfilerSample = useCallback((sample: ProfilerSample) => {
samplesRef.current = [...samplesRef.current.slice(-79), sample];
const now = performance.now();
if (suppressNextPublishRef.current) {
suppressNextPublishRef.current = false;
return;
}
if (samplesRef.current.length === 1 || now - lastPublishRef.current > 500) {
lastPublishRef.current = now;
suppressNextPublishRef.current = true;
setSamples(samplesRef.current);
}
}, []);
const onProfilerRender = useCallback<ProfilerOnRenderCallback>(
(id, phase, actualDuration, baseDuration, startTime, commitTime) => {
publishProfilerSample(toProfilerSample(id, phase, actualDuration, baseDuration, startTime, commitTime));
},
[publishProfilerSample]
);
const recordInteraction = useCallback((scenario: BenchmarkScenarioId, label: string, action: () => void) => {
const { measure } = measureInteraction(scenario, label, action);
setInteractions((current) => [...current.slice(-7), measure]);
}, []);
const runScenario = useCallback(
(scenario: BenchmarkScenarioId) => {
if (scenario === "initial-render") {
recordInteraction(scenario, "Optimized initial render reset", () => setRows(generatePortfolioRows(ROW_COUNT)));
return;
}
if (scenario === "search-filter") {
recordInteraction(scenario, "Optimized enterprise search", () =>
setQueryInput((current) => (current === "enterprise" ? "Enterprise" : "enterprise"))
);
return;
}
Iif (scenario === "table-scroll") {
recordInteraction(scenario, "Optimized virtual table scroll", () =>
scrollBenchmarkTable('[data-table-scroll="optimized"]')
);
return;
}
if (scenario === "chart-toggle") {
recordInteraction(scenario, "Optimized lazy chart toggle", () => setShowChart((current) => !current));
return;
}
recordInteraction(scenario, "Optimized gallery toggle", () => setShowGallery((current) => !current));
},
[recordInteraction]
);
const resetMetrics = useCallback(() => {
samplesRef.current = [];
lastPublishRef.current = 0;
suppressNextPublishRef.current = false;
setSamples([]);
setInteractions([]);
performance.clearMarks();
performance.clearMeasures();
}, []);
const handleQueryChange = useCallback(
(value: string) => recordInteraction("search-filter", "Optimized search input", () => setQueryInput(value)),
[recordInteraction]
);
const handleRegionChange = useCallback(
(value: Region | "all") => recordInteraction("search-filter", "Optimized region filter", () => setRegion(value)),
[recordInteraction]
);
const handleTierChange = useCallback(
(value: AccountTier | "all") => recordInteraction("search-filter", "Optimized tier filter", () => setTier(value)),
[recordInteraction]
);
const handleSortKeyChange = useCallback(
(value: SortKey) => recordInteraction("search-filter", "Optimized sort change", () => setSortKey(value)),
[recordInteraction]
);
const handleSortDirectionChange = useCallback(
(value: SortDirection) =>
recordInteraction("search-filter", "Optimized sort direction", () => setSortDirection(value)),
[recordInteraction]
);
return (
<div className="app-shell">
<header className="app-header">
<div>
<p className="eyebrow">Frontend Performance Lab</p>
<h1>Optimized implementation</h1>
</div>
<div className="header-meta" aria-label="Implementation traits">
<span>Virtualized table</span>
<span>Lazy chart</span>
<span>Lazy images</span>
</div>
</header>
<ControlPanel
filters={controlFilters}
appliedQuery={debouncedQuery}
theme={theme}
onQueryChange={handleQueryChange}
onRegionChange={handleRegionChange}
onTierChange={handleTierChange}
onSortKeyChange={handleSortKeyChange}
onSortDirectionChange={handleSortDirectionChange}
onThemeToggle={toggleTheme}
/>
<div className="workspace">
<Profiler id="OptimizedApp" onRender={onProfilerRender}>
<main className="main-column">
<KpiStrip summary={summary} />
<div className="section-actions" aria-label="Optional sections">
<button type="button" onClick={() => runScenario("chart-toggle")}>
{showChart ? "Hide chart" : "Show chart"}
</button>
<button type="button" onClick={() => runScenario("gallery-toggle")}>
{showGallery ? "Hide gallery" : "Show gallery"}
</button>
</div>
{showChart ? (
<Suspense fallback={<div className="panel loading-panel" role="status">Loading chart module</div>}>
<HeavyRevenueChart rows={filteredRows} />
</Suspense>
) : null}
{showGallery ? <ImageGallery images={galleryImages} /> : null}
<VirtualizedDataTable rows={filteredRows} onVisibleRowsChange={setVisibleRowCount} />
</main>
</Profiler>
<BenchmarkPanel
samples={samples}
interactions={interactions}
rowCount={filteredRows.length}
renderedRows={visibleRowCount}
onRunScenario={runScenario}
onReset={resetMetrics}
/>
</div>
</div>
);
}
|