fix(devkit): tree.children should support writes to directories that …

…have the same name as the parent

packages/nx/src/generators/tree.spec.ts

@@ -355,6 +355,16 @@ describe('tree', () => {
         ]);
       });
 
+      it('should support nested dirs with same name as parent', () => {
+        tree.write('/parent-a/parent-a/parent-a-file.txt', 'parent content');
+        expect(tree.children('/parent-a')).toEqual([
+          'parent-a',
+        ]);
+        expect(tree.children('/parent-a/parent-a')).toEqual([
+          'parent-a-file.txt',
+        ]);
+      });
+
       describe('at the root', () => {
         it('should return a list of children', () => {
           expect(tree.children('')).toEqual(['parent', 'root-file.txt']);

packages/nx/src/generators/tree.ts

@@ -403,8 +403,12 @@ export class FsTree implements Tree {
     }
     Object.keys(this.recordedChanges).forEach((f) => {
       if (f.startsWith(`${path}/`)) {
-        const [_, file] = f.split(`${path}/`);
-        res[file.split('/')[0]] = true;
+        // Remove the current folder's path from the directory
+        const file = f.substring(path.length + 1);
+        // Split the path on segments, and take the first one
+        const basePath = file.split('/')[0];
+        // Mark it as a child of the current directory
+        res[basePath] = true;
       }
     });