Function configureServer

packages/vite/src/plugins/vite-node.ts:241–319

(clientServer)

    name: 'nuxt:vite-node-server',
    enforce: 'post',
    async configureServer (clientServer) {
      // early return if plugins are 'borrowed' for testing/storybook
      if (!tryUseNuxt()) {
        return
      }

      // When `ssr: false` without the vite environment API, the client dev server's
      // config only carries the client entry, so we resolve the SPA entry up front.
      const spaEntryPath = !nuxt.options.ssr && !nuxt.options.experimental.viteEnvironmentApi
        ? await resolvePath(join(nuxt.options.appDir, 'entry-spa'))
        : undefined

      // The SSR module graph isn't reachable from the file watcher or the
      // `app:templatesGenerated` hook for modules invalidated by user plugins
      // (e.g. virtual modules invalidated via `handleHotUpdate`). Track the
      // most recent invalidation/HMR timestamp we've observed so we can pick
      // up any module whose timestamp advanced since the previous SSR render.
      // See https://github.com/nuxt/nuxt/issues/30169.
      let lastSeenTimestamp = 0

      function collectInvalidatedSsrModules (ssrServer: ViteDevServer) {
        const ssrModuleGraph = nuxt.options.experimental.viteEnvironmentApi
          ? ssrServer.environments.ssr.moduleGraph
          : ssrServer.moduleGraph
        let maxSeen = lastSeenTimestamp
        for (const mod of ssrModuleGraph.idToModuleMap.values()) {
          const modTimestamp = Math.max(mod.lastHMRTimestamp, mod.lastInvalidationTimestamp)
          if (modTimestamp > lastSeenTimestamp) {
            markInvalidate(mod)
            if (modTimestamp > maxSeen) {
              maxSeen = modTimestamp
            }
          }
        }
        lastSeenTimestamp = maxSeen
      }

      function resolveServer (ssrServer: ViteDevServer) {
        const viteNodeServerOptions = {
          socketPath,
          root: nuxt.options.srcDir,
          entryPath: spaEntryPath ?? resolveServerEntry(ssrServer.config),
          base: '/',
          maxRetryAttempts: nuxt.options.vite.viteNode?.maxRetryAttempts,
          baseRetryDelay: nuxt.options.vite.viteNode?.baseRetryDelay,
          maxRetryDelay: nuxt.options.vite.viteNode?.maxRetryDelay,
          requestTimeout: nuxt.options.vite.viteNode?.requestTimeout,
          // TODO: remove baseURL in future
          baseURL: nuxt.options.devServer.url,
        }

        process.env.NUXT_VITE_NODE_OPTIONS = JSON.stringify(viteNodeServerOptions)

        socketServer = createViteNodeSocketServer(nuxt, ssrServer, clientServer, invalidates, () => collectInvalidatedSsrModules(ssrServer), viteNodeServerOptions)
      }

      if (nuxt.options.experimental.viteEnvironmentApi || !nuxt.options.ssr) {
        resolveServer(clientServer)