fix: print errors when importing an invalid dynamic route (#3201)

Co-authored-by: Divyansh Singh <40380293+brc-dd@users.noreply.github.com>

src/node/config.ts

@@ -104,7 +104,8 @@ export async function resolveConfig(
 
   const { pages, dynamicRoutes, rewrites } = await resolvePages(
     srcDir,
-    userConfig
+    userConfig,
+    logger
   )
 
   const config: SiteConfig = {

src/node/plugin.ts

@@ -268,7 +268,11 @@ export async function createVitePressPlugin(
         if (file.endsWith('.md')) {
           Object.assign(
             siteConfig,
-            await resolvePages(siteConfig.srcDir, siteConfig.userConfig)
+            await resolvePages(
+              siteConfig.srcDir,
+              siteConfig.userConfig,
+              siteConfig.logger
+            )
           )
         }
 

src/node/plugins/dynamicRoutesPlugin.ts

@@ -1,6 +1,7 @@
 import {
   loadConfigFromFile,
   normalizePath,
+  type Logger,
   type Plugin,
   type ViteDevServer
 } from 'vite'
@@ -13,7 +14,11 @@ import { resolveRewrites } from './rewritesPlugin'
 
 export const dynamicRouteRE = /\[(\w+?)\]/g
 
-export async function resolvePages(srcDir: string, userConfig: UserConfig) {
+export async function resolvePages(
+  srcDir: string,
+  userConfig: UserConfig,
+  logger: Logger
+) {
   // Important: fast-glob doesn't guarantee order of the returned files.
   // We must sort the pages so the input list to rollup is stable across
   // builds - otherwise different input order could result in different exports
@@ -39,7 +44,11 @@ export async function resolvePages(srcDir: string, userConfig: UserConfig) {
     ;(dynamicRouteRE.test(file) ? dynamicRouteFiles : pages).push(file)
   })
 
-  const dynamicRoutes = await resolveDynamicRoutes(srcDir, dynamicRouteFiles)
+  const dynamicRoutes = await resolveDynamicRoutes(
+    srcDir,
+    dynamicRouteFiles,
+    logger
+  )
   pages.push(...dynamicRoutes.routes.map((r) => r.path))
 
   const rewrites = resolveRewrites(pages, userConfig.rewrites)
@@ -141,7 +150,7 @@ export const dynamicRoutesPlugin = async (
         if (!/\.md$/.test(ctx.file)) {
           Object.assign(
             config,
-            await resolvePages(config.srcDir, config.userConfig)
+            await resolvePages(config.srcDir, config.userConfig, config.logger)
           )
         }
         for (const id of mods) {
@@ -154,7 +163,8 @@ export const dynamicRoutesPlugin = async (
 
 export async function resolveDynamicRoutes(
   srcDir: string,
-  routes: string[]
+  routes: string[],
+  logger: Logger
 ): Promise<SiteConfig['dynamicRoutes']> {
   const pendingResolveRoutes: Promise<ResolvedRouteConfig[]>[] = []
   const routeFileToModulesMap: Record<string, Set<string>> = {}
@@ -170,7 +180,7 @@ export async function resolveDynamicRoutes(
     const pathsFile = paths.find((p) => fs.existsSync(p))
 
     if (pathsFile == null) {
-      console.warn(
+      logger.warn(
         c.yellow(
           `Missing paths file for dynamic route ${route}: ` +
             `a corresponding ${paths[0]} (or .ts/.mjs/.mts) file is needed.`
@@ -183,15 +193,15 @@ export async function resolveDynamicRoutes(
     let mod = routeModuleCache.get(pathsFile)
     if (!mod) {
       try {
-        mod = (await loadConfigFromFile({} as any, pathsFile)) as RouteModule
+        mod = (await loadConfigFromFile(
+          {} as any,
+          pathsFile,
+          undefined,
+          'silent'
+        )) as RouteModule
         routeModuleCache.set(pathsFile, mod)
-      } catch (e) {
-        console.warn(
-          c.yellow(
-            `Invalid paths file export in ${pathsFile}. ` +
-              `Expects default export of an object with a "paths" property.`
-          )
-        )
+      } catch (e: any) {
+        logger.warn(`${c.yellow(`Failed to load ${pathsFile}:`)}\n${e.stack}`)
         continue
       }
     }
@@ -210,7 +220,7 @@ export async function resolveDynamicRoutes(
 
     const loader = mod!.config.paths
     if (!loader) {
-      console.warn(
+      logger.warn(
         c.yellow(
           `Invalid paths file export in ${pathsFile}. ` +
             `Missing "paths" property from default export.`