[modules] Never do lazy parsing in modules.

src/parsing/parser.cc

Index: src/parsing/parser.cc
diff --git a/src/parsing/parser.cc b/src/parsing/parser.cc
index 16c6b36ab41186307ae09cb3ccd27e0121c8f65a..080ae357e18e60b7ec510fa1bb7b6bae2c54ad04 100644
--- a/src/parsing/parser.cc
+++ b/src/parsing/parser.cc
@@ -768,6 +768,10 @@ FunctionLiteral* Parser::DoParseProgram(ParseInfo* info) {
     } else if (info->is_module()) {
       DCHECK_EQ(outer, info->script_scope());
       outer = NewModuleScope(info->script_scope());
+      // Never do lazy parsing in modules.  If we want to support this in the
+      // future, we must force context-allocation for all variables that are
+      // declared at the module level but not MODULE-allocated.
+      parsing_mode = PARSE_EAGERLY;
     }
 
     DeclarationScope* scope = outer->AsDeclarationScope();