1 files changed, 23 insertions, 0 deletions
diff --git a/cli/rt/40_tty.js b/cli/rt/40_tty.js
new file mode 100644
index 000000000..3bab4f321
--- /dev/null
+++ b/cli/rt/40_tty.js
@@ -0,0 +1,23 @@
+// Copyright 2018-2020 the Deno authors. All rights reserved. MIT license.
+
+((window) => {
+  const { sendSync } = window.__bootstrap.dispatchJson;
+
+  function consoleSize(rid) {
+    return sendSync("op_console_size", { rid });
+  }
+
+  function isatty(rid) {
+    return sendSync("op_isatty", { rid });
+  }
+
+  function setRaw(rid, mode) {
+    sendSync("op_set_raw", { rid, mode });
+  }
+
+  window.__bootstrap.tty = {
+    consoleSize,
+    isatty,
+    setRaw,
+  };
+})(this);