From 966c0aebbc8c80d68c859a0d0ea083c9a1ccbd23 Mon Sep 17 00:00:00 2001
From: why520crazy <why520crazy@163.com>
Date: Mon, 31 May 2021 19:03:10 +0800
Subject: [PATCH] fix(@angular-devkit/core): transform path using getSystemPath
 for NodeJsAsyncHost's `exists` method

---
 packages/angular_devkit/core/node/host.ts      | 4 +++-
 packages/angular_devkit/core/node/host_spec.ts | 9 +++++++++
 2 files changed, 12 insertions(+), 1 deletion(-)

diff --git a/packages/angular_devkit/core/node/host.ts b/packages/angular_devkit/core/node/host.ts
index eac6e12d2746..e1879af3b514 100644
--- a/packages/angular_devkit/core/node/host.ts
+++ b/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()));
diff --git a/packages/angular_devkit/core/node/host_spec.ts b/packages/angular_devkit/core/node/host_spec.ts
index 86e653124cdc..04c666302add 100644
--- a/packages/angular_devkit/core/node/host_spec.ts
+++ b/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) => {