refactor: decouple node resolution from deno_core (#24724)

1 files changed, 39 insertions, 0 deletions

diff --git a/ext/node_resolver/env.rs b/ext/node_resolver/env.rs
new file mode 100644
index 000000000..b520ece0f
--- /dev/null
+++ b/ext/node_resolver/env.rs
@@ -0,0 +1,39 @@
+// Copyright 2018-2024 the Deno authors. All rights reserved. MIT license.
+
+use std::path::Path;
+use std::path::PathBuf;
+
+use crate::sync::MaybeSend;
+use crate::sync::MaybeSync;
+
+pub struct NodeResolverFsStat {
+  pub is_file: bool,
+  pub is_dir: bool,
+  pub is_symlink: bool,
+}
+
+pub trait NodeResolverEnv: std::fmt::Debug + MaybeSend + MaybeSync {
+  fn is_builtin_node_module(&self, specifier: &str) -> bool;
+
+  fn realpath_sync(&self, path: &Path) -> std::io::Result<PathBuf>;
+
+  fn stat_sync(&self, path: &Path) -> std::io::Result<NodeResolverFsStat>;
+
+  fn exists_sync(&self, path: &Path) -> bool;
+
+  fn is_file_sync(&self, path: &Path) -> bool {
+    self
+      .stat_sync(path)
+      .map(|stat| stat.is_file)
+      .unwrap_or(false)
+  }
+
+  fn is_dir_sync(&self, path: &Path) -> bool {
+    self
+      .stat_sync(path)
+      .map(|stat| stat.is_dir)
+      .unwrap_or(false)
+  }
+
+  fn pkg_json_fs(&self) -> &dyn deno_package_json::fs::DenoPkgJsonFs;
+}