fix(arborist): node.target can be null when it is a file dep or symlink

workspaces/arborist/lib/arborist/load-actual.js

@@ -333,7 +333,7 @@ module.exports = cls => class ActualLoader extends cls {
 
   async #loadFSTree (node) {
     const did = this.#actualTreeLoaded
-    if (!did.has(node.target.realpath)) {
+    if (!node.isLink && !did.has(node.target.realpath)) {
       did.add(node.target.realpath)
       await this.#loadFSChildren(node.target)
       return Promise.all(

workspaces/arborist/test/arborist/reify.js

@@ -160,6 +160,9 @@ const newArb = (opt) => new Arborist({
 
 const reify = (path, opt) => newArb({ path, ...(opt || {}) }).reify(opt)
 
+t.test('ljharb file dep', t =>
+  t.resolveMatchSnapshot(printReified(fixture(t, 'file-dep'))))
+
 t.test('tarball deps with transitive tarball deps', t =>
   t.resolveMatchSnapshot(printReified(fixture(t, 'tarball-dependencies'))))
 

workspaces/arborist/test/fixtures/file-dep/fake/package.json

@@ -0,0 +1,9 @@
+{
+  "bundleDependencies": true,
+  "dependencies": {
+    "abbrev": "2.0.0"
+  },
+  "devDependencies": {
+    "has-package-exports": "file:."
+  }
+}

workspaces/arborist/test/fixtures/file-dep/package.json

@@ -0,0 +1,6 @@
+{
+	"dependencies": {
+		"some-fake-name": "file:fake",
+		"has-package-exports": "^1.3.0"
+	}
+}