message: feat(build): force lib build only
diff: @@ -52,7 +52,10 @@ pub fn cargo_build_wasm(path: &Path, debug: bool, step: &Step) -> Result<(), Err
  PBAR.step(step, &msg);
  let output = {
  let mut cmd = Command::new("cargo");
  - cmd.current_dir(path).arg("+nightly").arg("build");
  + cmd.current_dir(path)
  + .arg("+nightly")
  + .arg("build")
  + .arg("--lib");
  if !debug {
  cmd.arg("--release");
  }
  