fix: keep tree nodes until all children are removed

src/core/tree.spec.ts

@@ -79,6 +79,17 @@ describe('Tree', () => {
     ]).toEqual(['a', 'b'])
   })
 
+  it('removes the node after all named views', () => {
+    const tree = createPrefixTree(DEFAULT_OPTIONS)
+    tree.insert('index.vue')
+    tree.insert('index@a.vue')
+    expect(tree.children.get('index')).toBeDefined()
+    tree.remove('index@a.vue')
+    expect(tree.children.get('index')).toBeDefined()
+    tree.remove('index.vue')
+    expect(tree.children.get('index')).toBeUndefined()
+  })
+
   it('handles multiple params', () => {
     const tree = createPrefixTree(DEFAULT_OPTIONS)
     tree.insert('[a]-[b].vue')

src/core/tree.ts

@@ -80,7 +80,7 @@ export class TreeLeaf {
         child.value.filePaths.delete(viewName)
       }
       // this is the file we wanted to remove
-      if (child.children.size === 0) {
+      if (child.children.size === 0 && child.value.filePaths.size === 0) {
         this.children.delete(segment)
       }
     }