fix(traverse): do not publish the build script

crates/oxc_traverse/Cargo.toml

@@ -11,6 +11,7 @@ license.workspace      = true
 repository.workspace   = true
 rust-version.workspace = true
 categories.workspace   = true
+include                = ["/src"]
 
 [lints]
 workspace = true

crates/oxc_traverse/build.rs

@@ -1,20 +1,17 @@
-use std::{env, process::Command};
-
 fn main() {
-    // Re-run if NodeJS build script or AST types change
-    println!("cargo:rerun-if-changed=scripts");
-    println!("cargo:rerun-if-changed=../oxc_ast/src/ast");
-
     // Exit if on CI.
     // The built files should be checked into git, so want to run tests etc on what's actually in repo,
     // rather than regenerating them.
-    match env::var("CI") {
-        Ok(value) if value == "true" => return,
-        _ => {}
+    if std::option_env!("CI") == Some("true") {
+        return;
     }
 
+    // Re-run if NodeJS build script or AST types change
+    println!("cargo:rerun-if-changed=scripts");
+    println!("cargo:rerun-if-changed=../oxc_ast/src/ast");
+
     // Run NodeJS build script
-    let status = Command::new("node")
+    let status = std::process::Command::new("node")
         .arg("./scripts/build.mjs")
         .status()
         .expect("Failed to run NodeJS build script");