fix(@angular-devkit/core): transform path using getSystemPath for NodeJsAsyncHost's exists method

Author: why520crazy

packages/angular_devkit/core/node/host.ts

@@ -136,12 +136,13 @@ export class NodeJsAsyncHost implements virtualFs.Host<Stats> {
   }
 
   exists(path: Path): Observable<boolean> {
-    return observableFrom(exists(path));
+    return observableFrom(exists(getSystemPath(path)));
   }
 
   isDirectory(path: Path): Observable<boolean> {
     return this.stat(path).pipe(map((stat) => stat.isDirectory()));
   }
+
   isFile(path: Path): Observable<boolean> {
     return this.stat(path).pipe(map((stat) => stat.isFile()));
   }
@@ -267,6 +268,7 @@ export class NodeJsSyncHost implements virtualFs.Host<Stats> {
     // eslint-disable-next-line @typescript-eslint/no-non-null-assertion
     return this.stat(path)!.pipe(map((stat) => stat.isDirectory()));
   }
+
   isFile(path: Path): Observable<boolean> {
     // eslint-disable-next-line @typescript-eslint/no-non-null-assertion
     return this.stat(path)!.pipe(map((stat) => stat.isFile()));

packages/angular_devkit/core/node/host_spec.ts

@@ -30,8 +30,17 @@ describe('NodeJsAsyncHost', () => {
     root = temp.mkdirSync('core-node-spec-');
     host = new virtualFs.ScopedHost(new NodeJsAsyncHost(), normalize(root));
   });
+
   afterEach((done) => host.delete(normalize('/')).toPromise().then(done, done.fail));
 
+  it('should get correct result for exists', async () => {
+    let isExists = await host.exists(normalize('not-found')).toPromise();
+    expect(isExists).toBe(false);
+    await host.write(normalize('not-found'), virtualFs.stringToFileBuffer('content')).toPromise();
+    isExists = await host.exists(normalize('not-found')).toPromise();
+    expect(isExists).toBe(true);
+  });
+
   linuxOnlyIt(
     'can watch',
     (done) => {