1 files changed, 4 insertions, 3 deletions
diff --git a/runtime/js/40_tty.js b/runtime/js/40_tty.js
index 1abed5f25..9cf351cc0 100644
--- a/runtime/js/40_tty.js
+++ b/runtime/js/40_tty.js
@@ -3,13 +3,14 @@
 
 ((window) => {
   const core = window.Deno.core;
+  const ops = core.ops;
 
   function consoleSize(rid) {
-    return core.opSync("op_console_size", rid);
+    return ops.op_console_size(rid);
   }
 
   function isatty(rid) {
-    return core.opSync("op_isatty", rid);
+    return ops.op_isatty(rid);
   }
 
   const DEFAULT_SET_RAW_OPTIONS = {
@@ -18,7 +19,7 @@
 
   function setRaw(rid, mode, options = {}) {
     const rOptions = { ...DEFAULT_SET_RAW_OPTIONS, ...options };
-    core.opSync("op_set_raw", { rid, mode, options: rOptions });
+    ops.op_set_raw({ rid, mode, options: rOptions });
   }
 
   window.__bootstrap.tty = {