Function prerender

packages/start-plugin-core/src/prerender.ts:17–261

({
  startConfig,
  handler,
}: {
  startConfig: TanStackStartOutputConfig
  handler: PrerenderHandler
})

}

export async function prerender({
  startConfig,
  handler,
}: {
  startConfig: TanStackStartOutputConfig
  handler: PrerenderHandler
}) {
  const logger = createLogger('prerender')
  logger.info('Prerendering pages...')

  if (startConfig.prerender?.enabled) {
    let pages = startConfig.pages.length ? startConfig.pages : [{ path: '/' }]

    if (startConfig.prerender.autoStaticPathsDiscovery ?? true) {
      const pagesMap = new Map(pages.map((item) => [item.path, item]))
      const discoveredPages = globalThis.TSS_PRERENDABLE_PATHS || []

      for (const page of discoveredPages) {
        if (!pagesMap.has(page.path)) {
          pagesMap.set(page.path, page)
        }
      }

      pages = Array.from(pagesMap.values())
    }

    startConfig.pages = pages
  }

  const routerBasePath = joinURL('/', startConfig.router.basepath ?? '')
  const routerBaseUrl = new URL(routerBasePath, 'http://localhost')

  startConfig.pages = validateAndNormalizePrerenderPages(
    startConfig.pages,
    routerBaseUrl,
  )

  try {
    const pages = await prerenderPages({
      outputDir: handler.getClientOutputDirectory(),
    })

    logger.info(`Prerendered ${pages.length} pages:`)
    pages.forEach((page) => {
      logger.info(`- ${page}`)
    })
  } catch (error) {
    logger.error(error)
    throw error
  } finally {
    await handler.close?.()
  }

  function extractLinks(html: string): Array<string> {
    const linkRegex = /<a[^>]+href=["']([^"']+)["'][^>]*>/g
    const links: Array<string> = []
    let match: RegExpExecArray | null