Add file to options passed to mdast-util-to-hast

Related-to: remarkjs/remark#1272.
Related-to: syntax-tree/mdast-util-to-hast@59ecd14.

lib/index.js

@@ -4,12 +4,14 @@
 /**
  * @typedef {import('hast').Root} HastRoot
  * @typedef {import('mdast').Root} MdastRoot
- * @typedef {import('mdast-util-to-hast').Options} Options
+ * @typedef {import('mdast-util-to-hast').Options} ToHastOptions
  * @typedef {import('unified').Processor} Processor
  * @typedef {import('vfile').VFile} VFile
  */
 
 /**
+ * @typedef {Omit<ToHastOptions, 'file'>} Options
+ *
  * @callback TransformBridge
  *   Bridge-mode.
  *
@@ -138,16 +140,20 @@ export default function remarkRehype(destination, options) {
      */
     return async function (tree, file) {
       // Cast because root in -> root out.
-      const hastTree = /** @type {HastRoot} */ (toHast(tree, options))
+      const hastTree = /** @type {HastRoot} */ (
+        toHast(tree, {file, ...options})
+      )
       await destination.run(hastTree, file)
     }
   }
 
   /**
    * @type {TransformMutate}
    */
-  return function (tree) {
+  return function (tree, file) {
     // Cast because root in -> root out.
-    return /** @type {HastRoot} */ (toHast(tree, options || destination))
+    return /** @type {HastRoot} */ (
+      toHast(tree, {file, ...(options || destination)})
+    )
   }
 }