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.

1 files changed, 8 insertions, 0 deletions

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,