Fix types to support instances of Node again

Author: wooorm

index.js

@@ -1,14 +1,15 @@
 /**
  * @typedef {import('unist').Point} Point
+ * @typedef {import('unist').Node} Node
  * @typedef {import('unist').Position} Position
- * @typedef {Record<string, unknown> & {type: string, position?: Position|undefined}} NodeLike
+ * @typedef {object & {type: string, position?: Position|undefined}} NodeLike
  */
 
 /**
  * Stringify one point, a position (start and end points), or a node’s
  * positional information.
  *
- * @param {NodeLike|Position|Point|null} [value]
+ * @param {Node|NodeLike|Position|Point|null} [value]
  * @returns {string}
  */
 export function stringifyPosition(value) {

package.json

@@ -37,6 +37,7 @@
     "@types/unist": "^2.0.0"
   },
   "devDependencies": {
+    "@types/mdast": "^3.0.0",
     "@types/tape": "^4.0.0",
     "c8": "^7.0.0",
     "prettier": "^2.0.0",

test.js

@@ -77,7 +77,22 @@ test('stringifyPosition', function (t) {
       }
     }),
     '2:5-2:6',
-    'should return a range for `node` with valid `position`'
+    'should return a range for `node` with valid `position` (types: literal object)'
+  )
+
+  t.equal(
+    stringifyPosition(
+      /** @type {import('mdast').Root} */ ({
+        type: 'root',
+        children: [],
+        position: {
+          start: {line: 1, column: 1},
+          end: {line: 2, column: 1}
+        }
+      })
+    ),
+    '1:1-2:1',
+    'should return a range for `node` with valid `position` (types: explicit instance of node)'
   )
 
   t.equal(
@@ -102,9 +117,10 @@ test('stringifyPosition', function (t) {
   )
 
   t.equal(
-    // @ts-expect-error runtime.
     stringifyPosition({
+      // @ts-expect-error runtime.
       start: {line: null, column: null},
+      // @ts-expect-error runtime.
       end: {line: null, column: null}
     }),
     '1:1-1:1',