fix(installer): respect NO_COLOR env var and handle NULL console handle

- Check NO_COLOR at startup and disable owo_colors globally if set,
  matching the no-color.org spec and the global CLI's behavior
- Check for NULL handle (0) from GetStdHandle in addition to
  INVALID_HANDLE_VALUE (-1) for robustness when no console is attached
- Enable owo-colors supports-colors feature for set_override support

Author: fengmk2

crates/vite_installer/Cargo.toml

@@ -14,7 +14,7 @@ path = "src/main.rs"
 [dependencies]
 clap = { workspace = true, features = ["derive"] }
 indicatif = { workspace = true }
-owo-colors = { workspace = true }
+owo-colors = { workspace = true, features = ["supports-colors"] }
 tokio = { workspace = true, features = ["full"] }
 vite_install = { workspace = true }
 vite_path = { workspace = true }

crates/vite_installer/src/main.rs

@@ -45,6 +45,12 @@ fn init_dll_security() {}
 /// output, legacy console), we disable colors globally via owo_colors.
 #[cfg(windows)]
 fn init_colors() {
+    // Respect NO_COLOR (https://no-color.org/)
+    if std::env::var_os("NO_COLOR").is_some() {
+        owo_colors::set_override(false);
+        return;
+    }
+
     unsafe extern "system" {
         fn GetStdHandle(nStdHandle: u32) -> isize;
         fn GetConsoleMode(hConsoleHandle: isize, lpMode: *mut u32) -> i32;
@@ -57,7 +63,8 @@ fn init_colors() {
     let enable_vt = |std_handle: u32| -> bool {
         unsafe {
             let handle = GetStdHandle(std_handle);
-            if handle == -1_isize {
+            // INVALID_HANDLE_VALUE (-1) or NULL (0, no console attached)
+            if handle == -1_isize || handle == 0 {
                 return false;
             }
             let mut mode: u32 = 0;
@@ -69,7 +76,6 @@ fn init_colors() {
         }
     };
 
-    // Enable on both stdout (interactive menu) and stderr (info/warn/error)
     let stdout_ok = enable_vt(STD_OUTPUT_HANDLE);
     let stderr_ok = enable_vt(STD_ERROR_HANDLE);
 
@@ -79,7 +85,11 @@ fn init_colors() {
 }
 
 #[cfg(not(windows))]
-fn init_colors() {}
+fn init_colors() {
+    if std::env::var_os("NO_COLOR").is_some() {
+        owo_colors::set_override(false);
+    }
+}
 
 fn main() {
     init_dll_security();