feat(npm): add flag for creating and resolving npm packages to a local node_modules folder (#15971)

1 files changed, 38 insertions, 0 deletions

diff --git a/ext/node/path.rs b/ext/node/path.rs
new file mode 100644
index 000000000..8477fe713
--- /dev/null
+++ b/ext/node/path.rs
@@ -0,0 +1,38 @@
+use std::path::Component;
+use std::path::PathBuf;
+
+/// Extenion to path_clean::PathClean
+pub trait PathClean<T> {
+  fn clean(&self) -> T;
+}
+
+impl PathClean<PathBuf> for PathBuf {
+  fn clean(&self) -> PathBuf {
+    let path = path_clean::PathClean::clean(self);
+    if cfg!(windows) && path.to_string_lossy().contains("..\\") {
+      // temporary workaround because path_clean::PathClean::clean is
+      // not good enough on windows
+      let mut components = Vec::new();
+
+      for component in path.components() {
+        match component {
+          Component::CurDir => {
+            // skip
+          }
+          Component::ParentDir => {
+            let poped_component = components.pop();
+            if !matches!(poped_component, Some(Component::Normal(_))) {
+              panic!("Error normalizing: {}", path.display());
+            }
+          }
+          Component::Normal(_) | Component::RootDir | Component::Prefix(_) => {
+            components.push(component);
+          }
+        }
+      }
+      components.into_iter().collect::<PathBuf>()
+    } else {
+      path
+    }
+  }
+}