fix(ext/node): homedir() `getpwuid`/`SHGetKnownFolderPath` fallback (#23841)

**Unix**: Returns the value of the HOME environment variable if it is
set even if it is an empty string. Otherwise, it tries to determine the
home directory by invoking the
[getpwuid_r](https://linux.die.net/man/3/getpwuid_r) function with the
UID of the current user.

**Windows**: Returns the value of the USERPROFILE environment variable
if it is set and it is not an empty string. Otherwise, it tries to
determine the home directory by invoking the
[SHGetKnownFolderPath](https://learn.microsoft.com/en-us/windows/win32/api/shlobj_core/nf-shlobj_core-shgetknownfolderpath)
function with
[FOLDERID_Profile](https://learn.microsoft.com/en-us/windows/win32/shell/knownfolderid).

Fixes https://github.com/denoland/deno/issues/23824

1 files changed, 14 insertions, 0 deletions

diff --git a/ext/node/ops/os/mod.rs b/ext/node/ops/os/mod.rs
index 603f678e0..5b32113e5 100644
--- a/ext/node/ops/os/mod.rs
+++ b/ext/node/ops/os/mod.rs
@@ -88,3 +88,17 @@ where
 
   cpus::cpu_info().ok_or_else(|| type_error("Failed to get cpu info"))
 }
+
+#[op2]
+#[string]
+pub fn op_homedir<P>(state: &mut OpState) -> Result<Option<String>, AnyError>
+where
+  P: NodePermissions + 'static,
+{
+  {
+    let permissions = state.borrow_mut::<P>();
+    permissions.check_sys("homedir", "node:os.homedir()")?;
+  }
+
+  Ok(home::home_dir().map(|path| path.to_string_lossy().to_string()))
+}