export const renderer:()

in src/server/lib/renderer.tsx [108:166]
50 lines of code
1 McCabe index (conditional complexity)

export const renderer: <P extends RoutePaths>(
	url: P,
	opts: RendererOpts,
	tokenisationParams?: PathParams<P>,
) => string = (url, { requestState, pageTitle }, tokenisationParams) => {
	const clientState = clientStateFromRequestStateLocals(requestState);

	const location = buildUrl(url, tokenisationParams);

	const { abTesting: { mvtId = 0, forcedTestVariants = {} } = {} } =
		clientState;

	// Any changes made here must also be made to the hydration in the static webpack bundle
	const react = ReactDOMServer.renderToString(
		<ABProvider
			arrayOfTestObjects={tests}
			abTestSwitches={abSwitches}
			pageIsSensitive={false}
			mvtMaxValue={1000000}
			mvtId={mvtId}
			forcedTestVariants={forcedTestVariants}
			serverSideTests={{}}
			errorReporter={() => {}}
			ophanRecord={() => {}}
		>
			<App {...clientState} location={location}></App>
		</ABProvider>,
	);

	const routingConfig: RoutingConfig = {
		clientState,
		location,
	};

	const scriptTags = getScriptTags(isSafari10Or11(requestState.browser));

	return `
    <!DOCTYPE html>
    <!-- Request ID: ${clientState.shortRequestId} -->
    <html lang="en">
      <head>
        <meta charset='utf-8' />
        <meta name="viewport" content="width=device-width, initial-scale=1">
        <meta name="theme-color" content="${brandBackground.primary}" />
        <link rel="icon" href="https://static.guim.co.uk/images/${favicon}">
        <title>${pageTitle} | The Guardian</title>

        <script src="https://assets.guim.co.uk/polyfill.io/v3/polyfill.min.js?features=es2015%2Ces2016%2Ces2017%2Ces2018%2Ces2019%2Ces2020%2Ces2021%2Ces2022%2Cfetch%2CglobalThis%2CURLSearchParams" defer></script>
        ${scriptTags}

        <script id="routingConfig" type="application/json">${serialize(routingConfig, { isJSON: true })}</script>
        <style>${resets.defaults}</style>
      </head>
      <body style="margin:0">
        <div id="app">${react}</div>
      </body>
    </html>
  `;
};