Fix WSL Hot Reload (#2721)

* feat: poll watcher
* progress: wsl hot reload setting
* feat: wsl poll setting

packages/cli/src/settings.rs

@@ -25,6 +25,9 @@ pub struct CliSettings {
     pub always_open_browser: Option<bool>,
     /// Describes whether desktop apps in development will be pinned always-on-top.
     pub always_on_top: Option<bool>,
+    /// Describes the interval in seconds that the CLI should poll for file changes on WSL.
+    #[serde(default = "default_wsl_file_poll_interval")]
+    pub wsl_file_poll_interval: Option<u16>,
 }
 
 impl CliSettings {
@@ -74,7 +77,19 @@ impl CliSettings {
             CrateConfigError::Io(Error::new(ErrorKind::Other, e.to_string()))
         })?;
 
-        let result = fs::write(path.clone(), data.clone());
+        // Create the directory structure if it doesn't exist.
+        let parent_path = path.parent().unwrap();
+        if let Err(e) = fs::create_dir_all(parent_path) {
+            error!(
+                ?data,
+                ?path,
+                "failed to create directories for settings file"
+            );
+            return Err(CrateConfigError::Io(e));
+        }
+
+        // Write the data.
+        let result = fs::write(&path, data.clone());
         if let Err(e) = result {
             error!(?data, ?path, "failed to save global cli settings");
             return Err(CrateConfigError::Io(e));
@@ -102,3 +117,7 @@ impl CliSettings {
         Ok(())
     }
 }
+
+fn default_wsl_file_poll_interval() -> Option<u16> {
+    Some(2)
+}