fix bug

src/eval.js

@@ -331,8 +331,6 @@ export const eval_modules = (
     // TODO use native array for stack for perf? stack contains booleans
     stack: new Array(),
 
-    logs: [],
-
     searched_location: location,
     found_call: null,
 

src/runtime.js

@@ -44,10 +44,12 @@ const do_run = function*(module_fns, cxt, io_trace){
   cxt = (io_trace == null || io_trace.length == 0)
     // TODO group all io_trace_ properties to single object?
     ? {...cxt,
+      logs: [],
       io_trace_is_recording: true,
       io_trace: [],
     }
     : {...cxt,
+      logs: [],
       io_trace_is_recording: false,
       io_trace,
       io_trace_is_replay_aborted: false,