Set up React Web SDK

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// Add the code below to the root of your React app.
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import { createRoot } from 'react-dom/client';
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import { createLDReactProvider, LDContext } from '@launchdarkly/react-sdk';
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function App() {
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  return <div>Let your feature flags fly!</div>
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}
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// A "context" is a data object representing users, devices, organizations, and other entities.
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const context: LDContext = {
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  kind: 'user',
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  key: 'EXAMPLE_CONTEXT_KEY',
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  email: 'biz@face.dev',
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};
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// This is your client-side ID.
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const LDReactProvider = createLDReactProvider('YOUR_CLIENT_SIDE_ID', context);
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createRoot(document.getElementById('root') as HTMLElement).render(
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  <LDReactProvider>
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    <App />
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  </LDReactProvider>,
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);

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// Add the code below to the root of your React app.
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import { StrictMode, useCallback } from 'react';
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import { createRoot } from 'react-dom/client';
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import { createLDReactProvider, useLDClient } from '@launchdarkly/react-sdk';
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function App() {
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  const ldClient = useLDClient();
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  // Call trackMetric when a metric action occurs in your app —
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  // a click, a form submit, a page view, a custom event, whatever your metric measures.
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  const trackMetric = useCallback(
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    (metricKey: string, data?: unknown) => {
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      ldClient?.track(metricKey, data);
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    },
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    [ldClient],
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  );
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  return <div>Let your feature flags fly!</div>;
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}
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// A "context" is a data object representing users, devices, organizations, and other entities.
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const context = {
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  kind: 'user',
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  key: 'EXAMPLE_CONTEXT_KEY',
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  email: 'biz@face.dev',
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};
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// Initialize the SDK so flag values are ready before your app renders.
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// This is your client-side ID.
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const LDProvider = createLDReactProvider('YOUR_CLIENT_SIDE_ID', context);
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createRoot(document.getElementById('root') as HTMLElement).render(
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  <StrictMode>
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    <LDProvider>
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      <App />
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    </LDProvider>
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  </StrictMode>,
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);