TODO: ExtractFunction casts

Author: kripken

src/passes/ExtractFunction.cpp

@@ -51,6 +51,8 @@ static void extract(PassRunner* runner, Module* module, Name name) {
   // Update function references after making things imports.
   ReFinalize().run(runner, module);
   ReFinalize().walkModuleCode(module);
+  // TODO: Add casts when needed for exactness, like wasm-split, to handle
+  //       places that need the type remain exact.
 
   // Leave just one export, for the thing we want.
   module->exports.clear();