allow list of empty record in repl

cli/src/repl/eval.rs

@@ -305,6 +305,9 @@ fn ptr_to_ast<'a>(
                 let (tag_name, payload_vars) = tags.iter().next().unwrap();
                 single_tag_union_to_ast(env, ptr, field_layouts, tag_name.clone(), payload_vars)
             }
+            Content::Structure(FlatType::EmptyRecord) => {
+                struct_to_ast(env, ptr, &[], &MutMap::default())
+            }
             other => {
                 unreachable!(
                     "Something had a Struct layout, but instead of a Record type, it had: {:?}",

cli/tests/repl_eval.rs

@@ -199,6 +199,11 @@ mod repl_eval {
         expect_success("[]", "[] : List *");
     }
 
+    #[test]
+    fn literal_empty_list_empty_record() {
+        expect_success("[ {} ]", "[ {} ] : List {}");
+    }
+
     #[test]
     fn literal_num_list() {
         expect_success("[ 1, 2, 3 ]", "[ 1, 2, 3 ] : List (Num *)");