resolveServerOptions() — vite Function Reference

Source Code

packages/vite/src/node/server/index.ts lines 1145–1227

export function resolveServerOptions(
  root: string,
  raw: ServerOptions | undefined,
  logger: Logger,
): ResolvedServerOptions {
  const _server = mergeWithDefaults(
    {
      ..._serverConfigDefaults,
      host: undefined, // do not set here to detect whether host is set or not
      sourcemapIgnoreList: isInNodeModules,
    },
    raw ?? {},
  )

  const server: ResolvedServerOptions = {
    ..._server,
    fs: {
      ..._server.fs,
      // run searchForWorkspaceRoot only if needed
      allow: raw?.fs?.allow ?? [searchForWorkspaceRoot(root)],
    },
    sourcemapIgnoreList:
      _server.sourcemapIgnoreList === false
        ? () => false
        : _server.sourcemapIgnoreList,
  }

  let allowDirs = server.fs.allow

  if (process.versions.pnp) {
    // running a command fails if cwd doesn't exist and root may not exist
    // search for package root to find a path that exists
    const cwd = searchForPackageRoot(root)
    try {
      const enableGlobalCache =
        execSync('yarn config get enableGlobalCache', { cwd })
          .toString()
          .trim() === 'true'
      const yarnCacheDir = execSync(
        `yarn config get ${enableGlobalCache ? 'globalFolder' : 'cacheFolder'}`,
        { cwd },
      )
        .toString()
        .trim()
      allowDirs.push(yarnCacheDir)
    } catch (e) {
      logger.warn(`Get yarn cache dir error: ${e.message}`, {
        timestamp: true,
      })
    }
  }

  allowDirs = allowDirs.map((i) => resolvedAllowDir(root, i))

  // only push client dir when vite itself is outside-of-root
  const resolvedClientDir = resolvedAllowDir(root, CLIENT_DIR)
  if (!allowDirs.some((dir) => isParentDirectory(dir, resolvedClientDir))) {
    allowDirs.push(resolvedClientDir)
  }

  server.fs.allow = allowDirs

  if (server.origin?.endsWith('/')) {
    server.origin = server.origin.slice(0, -1)
    logger.warn(
      colors.yellow(
        `${colors.bold('(!)')} server.origin should not end with "/". Using "${
          server.origin
        }" instead.`,
      ),
    )
  }

  if (
    process.env.__VITE_ADDITIONAL_SERVER_ALLOWED_HOSTS &&
    Array.isArray(server.allowedHosts)
  ) {
    const additionalHost = process.env.__VITE_ADDITIONAL_SERVER_ALLOWED_HOSTS
    server.allowedHosts = [...server.allowedHosts, additionalHost]
  }