chore: add test to ensure parsing only happens once on first load (#23837)

cli/cache/parsed_source.rs

@@ -77,6 +77,8 @@ impl ParsedSourceCache {
       if parsed_source.media_type() == media_type
         && parsed_source.text_info().text_str() == source.as_ref()
       {
+        // note: message used tests
+        log::debug!("Removed parsed source: {}", specifier);
         return Ok(parsed_source);
       }
     }

tests/specs/run/no_reparse_first_load/__test__.jsonc

@@ -0,0 +1,6 @@
+// ensures we don't reparse a source file when transpiling
+// because it should have already been parsed by module analysis
+{
+  "args": "run --log-level=debug main.ts",
+  "output": "main.out"
+}

tests/specs/run/no_reparse_first_load/main.out

@@ -0,0 +1,2 @@
+[WILDCARD]Removed parsed source: file:///[WILDLINE]/main.ts
+[WILDCARD]

tests/specs/run/no_reparse_first_load/main.ts

@@ -0,0 +1 @@
+console.log("Hello");