refactor: reland "preserve ProcState::file_fetcher between restarts" (#17636)

Just some watcher init step that I thought would be "cloned over" but
needs to be done again on reset.

3 files changed, 10 insertions, 3 deletions

diff --git a/cli/cache/mod.rs b/cli/cache/mod.rs
index a52fe5f48..c8fcaa223 100644
--- a/cli/cache/mod.rs
+++ b/cli/cache/mod.rs
@@ -50,12 +50,10 @@ pub struct FetchCacher {
 impl FetchCacher {
   pub fn new(
     emit_cache: EmitCache,
-    file_fetcher: FileFetcher,
+    file_fetcher: Arc<FileFetcher>,
     root_permissions: PermissionsContainer,
     dynamic_permissions: PermissionsContainer,
   ) -> Self {
-    let file_fetcher = Arc::new(file_fetcher);
-
     Self {
       emit_cache,
       dynamic_permissions,
diff --git a/cli/cache/node.rs b/cli/cache/node.rs
index da17633aa..b19772229 100644
--- a/cli/cache/node.rs
+++ b/cli/cache/node.rs
@@ -24,6 +24,7 @@ struct CjsAnalysisData {
   pub reexports: Vec<String>,
 }
 
+#[derive(Clone)]
 pub struct NodeAnalysisCache {
   db_file_path: Option<PathBuf>,
   inner: Arc<Mutex<Option<Option<NodeAnalysisCacheInner>>>>,
diff --git a/cli/cache/parsed_source.rs b/cli/cache/parsed_source.rs
index 30eecf702..6385e7384 100644
--- a/cli/cache/parsed_source.rs
+++ b/cli/cache/parsed_source.rs
@@ -67,6 +67,14 @@ impl ParsedSourceCache {
     }
   }
 
+  pub fn reset_for_file_watcher(&self) -> Self {
+    Self {
+      db_cache_path: self.db_cache_path.clone(),
+      cli_version: self.cli_version.clone(),
+      sources: Default::default(),
+    }
+  }
+
   pub fn get_parsed_source_from_module(
     &self,
     module: &deno_graph::Module,