fix: allow preprocessor to be installed outside of the root directory (…

…vitejs#3988)
aleclarson · Nov 8, 2021 · ded48d2 · ded48d2
1 parent 0de88b0
commit ded48d2
Showing 1 changed file with 4 additions and 1 deletion.
diff --git a/packages/vite/src/node/plugins/css.ts b/packages/vite/src/node/plugins/css.ts
@@ -942,7 +942,10 @@ function loadPreprocessor(lang: PreprocessLang, root: string): any {
     return loadedPreprocessors[lang]
   }
   try {
-    const resolved = require.resolve(lang, { paths: [root] })
+    // Search for the preprocessor in the root directory first, and fall back
+    // to the default require paths.
+    const fallbackPaths = require.resolve.paths(lang) || []
+    const resolved = require.resolve(lang, { paths: [root, ...fallbackPaths] })
     return (loadedPreprocessors[lang] = require(resolved))
   } catch (e) {
     throw new Error(