Avoid running entire napi_build::setup twice

build/src/lib.rs

@@ -93,7 +93,7 @@ cfg_if! {
   }
 }
 
-fn setup_napi_feature() {
+pub fn setup_napi_feature() {
   let napi_version = String::from_utf8(
     Command::new("node")
       .args(&["-e", "console.log(process.versions.napi)"])

napi/build.rs

@@ -1,5 +1,3 @@
-extern crate napi_build;
-
 fn main() {
-  napi_build::setup();
+  napi_build::setup_napi_feature();
 }