fix: fs.exists not work for symlink (denoland/deno_std#291)

Original: https://github.com/denoland/deno_std/commit/264a51c093e00f3538f735ce8f0c25d20471a33d

3 files changed, 13 insertions, 2 deletions

diff --git a/fs/exists.ts b/fs/exists.ts
index 41961a0f2..ce4b83a4c 100644
--- a/fs/exists.ts
+++ b/fs/exists.ts
@@ -2,7 +2,7 @@
 
 /** Test whether or not the given path exists by checking with the file system */
 export async function exists(filePath: string): Promise<boolean> {
-  return Deno.stat(filePath)
+  return Deno.lstat(filePath)
     .then(() => true)
     .catch(() => false);
 }
@@ -10,7 +10,7 @@ export async function exists(filePath: string): Promise<boolean> {
 /** Test whether or not the given path exists by checking with the file system */
 export function existsSync(filePath: string): boolean {
   try {
-    Deno.statSync(filePath);
+    Deno.lstatSync(filePath);
     return true;
   } catch {
     return false;
diff --git a/fs/exists_test.ts b/fs/exists_test.ts
index 3d781108e..1e94c7f69 100644
--- a/fs/exists_test.ts
+++ b/fs/exists_test.ts
@@ -34,3 +34,13 @@ test(function existsDirectorySync() {
   );
   assertEquals(existsSync(testdataDir), true);
 });
+
+test(function existsLinkSync() {
+  // TODO(axetroy): generate link file use Deno api instead of set a link file in repository
+  assertEquals(existsSync(path.join(testdataDir, "0-link.ts")), true);
+});
+
+test(async function existsLink() {
+  // TODO(axetroy): generate link file use Deno api instead of set a link file in repository
+  assertEquals(await exists(path.join(testdataDir, "0-link.ts")), true);
+});
diff --git a/fs/testdata/0-link.ts b/fs/testdata/0-link.ts
new file mode 120000
index 000000000..24c6b8053
--- /dev/null
+++ b/fs/testdata/0-link.ts
@@ -0,0 +1 @@
+./fs/testdata/0.ts
\ No newline at end of file