Revert json ops (#2814)

* Revert "port more ops to JSON (#2809)"

This reverts commit 137f33733d365026903d40e7cde6e34ac6c36dcf.

* Revert "port ops to JSON: compiler, errors, fetch, files (#2804)"

This reverts commit 79f82cf10ed1dbf91346994250d7311a4d74377a.

* Revert "Port rest of os ops to JSON (#2802)"

This reverts commit 5b2baa5c990fbeae747e952c5dcd7a5369e950b1.

1 files changed, 26 insertions, 8 deletions

diff --git a/cli/ops/performance.rs b/cli/ops/performance.rs
index 090fc3323..94f6dbc38 100644
--- a/cli/ops/performance.rs
+++ b/cli/ops/performance.rs
@@ -1,7 +1,10 @@
 // Copyright 2018-2019 the Deno authors. All rights reserved. MIT license.
-use super::dispatch_json::{JsonOp, Value};
+use super::dispatch_flatbuffers::serialize_response;
+use super::utils::*;
+use crate::msg;
 use crate::state::ThreadSafeState;
 use deno::*;
+use flatbuffers::FlatBufferBuilder;
 
 // Returns a milliseconds and nanoseconds subsec
 // since the start time of the deno runtime.
@@ -9,9 +12,10 @@ use deno::*;
 // nanoseconds are rounded on 2ms.
 pub fn op_now(
   state: &ThreadSafeState,
-  _args: Value,
-  _zero_copy: Option<PinnedBuf>,
-) -> Result<JsonOp, ErrBox> {
+  base: &msg::Base<'_>,
+  data: Option<PinnedBuf>,
+) -> CliOpResult {
+  assert!(data.is_none());
   let seconds = state.start_time.elapsed().as_secs();
   let mut subsec_nanos = state.start_time.elapsed().subsec_nanos();
   let reduced_time_precision = 2_000_000; // 2ms in nanoseconds
@@ -23,8 +27,22 @@ pub fn op_now(
     subsec_nanos -= subsec_nanos % reduced_time_precision
   }
 
-  Ok(JsonOp::Sync(json!({
-    "seconds": seconds,
-    "subsecNanos": subsec_nanos,
-  })))
+  let builder = &mut FlatBufferBuilder::new();
+  let inner = msg::NowRes::create(
+    builder,
+    &msg::NowResArgs {
+      seconds,
+      subsec_nanos,
+    },
+  );
+
+  ok_buf(serialize_response(
+    base.cmd_id(),
+    builder,
+    msg::BaseArgs {
+      inner: Some(inner.as_union_value()),
+      inner_type: msg::Any::NowRes,
+      ..Default::default()
+    },
+  ))
 }