1 files changed, 9 insertions, 9 deletions
diff --git a/js/performance.ts b/js/performance.ts
index 7aaa7ae45..d2f339c46 100644
--- a/js/performance.ts
+++ b/js/performance.ts
@@ -1,6 +1,11 @@
 // Copyright 2018-2019 the Deno authors. All rights reserved. MIT license.
-import { sendSync, msg, flatbuffers } from "./dispatch_flatbuffers";
-import { assert } from "./util";
+import * as dispatch from "./dispatch";
+import { sendSync } from "./dispatch_json";
+
+interface NowResponse {
+  seconds: number;
+  subsecNanos: number;
+}
 
 export class Performance {
   /** Returns a current time from Deno's start in milliseconds.
@@ -11,12 +16,7 @@ export class Performance {
    *       console.log(`${t} ms since start!`);
    */
   now(): number {
-    const builder = flatbuffers.createBuilder();
-    const inner = msg.Now.createNow(builder);
-    const baseRes = sendSync(builder, msg.Any.Now, inner)!;
-    assert(msg.Any.NowRes === baseRes.innerType());
-    const res = new msg.NowRes();
-    assert(baseRes.inner(res) != null);
-    return res.seconds().toFloat64() * 1e3 + res.subsecNanos() / 1e6;
+    const res = sendSync(dispatch.OP_NOW) as NowResponse;
+    return res.seconds * 1e3 + res.subsecNanos / 1e6;
   }
 }