Fix to not create unneeded vfiles

wooorm · Sep 1, 2021 · b166c69 · b166c69
1 parent 96e3f0c
commit b166c69
Showing 1 changed file with 16 additions and 1 deletion.
diff --git a/lib/util/resolve-file-and-options.js b/lib/util/resolve-file-and-options.js
@@ -16,7 +16,9 @@ import {md} from './extnames.js'
  * @returns {{file: VFile, options: ProcessorOptions}}
  */
 export function resolveFileAndOptions(vfileCompatible, options) {
-  const file = new VFile(vfileCompatible)
+  const file = looksLikeAVFile(vfileCompatible)
+    ? vfileCompatible
+    : new VFile(vfileCompatible)
   const {format, ...rest} = options || {}
   return {
     file,
@@ -31,3 +33,16 @@ export function resolveFileAndOptions(vfileCompatible, options) {
     }
   }
 }
+
+/**
+ * @param {VFileCompatible} [value]
+ * @returns {value is VFile}
+ */
+function looksLikeAVFile(value) {
+  return Boolean(
+    value &&
+      typeof value === 'object' &&
+      'message' in value &&
+      'messages' in value
+  )
+}