Move buffers between V8 and native

* send()/recv() now operate on TypedArrays rather than ArrayBuffers.

* Remove a copy (through ArrayBuffer.slice()) from the send path.

* Remove a copy (through v8::ArrayBuffer::New()) from the return path.

* After moving a buffer from JS to native, the ArrayBuffer object and
  it's views are made inaccessible ('neutered').

* `struct deno_buf` now holds two [ptr, length] tuples, one for the actual
  memory allocation, and one for the logical data contained therein.
  This is necessary because flatbuffers fills it's buffer bottom-up, so
  the serialized blob doesn't start at beginning of the buffer, but
  somewhere in the middle.

1 files changed, 2 insertions, 2 deletions

diff --git a/js/deno.d.ts b/js/deno.d.ts
index f554135bc..a54dab851 100644
--- a/js/deno.d.ts
+++ b/js/deno.d.ts
@@ -1,10 +1,10 @@
 // Copyright 2018 Ryan Dahl <ry@tinyclouds.org>
 // All rights reserved. MIT License.
-type MessageCallback = (msg: ArrayBuffer) => void;
+type MessageCallback = (msg: Uint8Array) => void;
 
 interface Deno {
   recv(cb: MessageCallback): void;
-  send(msg: ArrayBuffer): null | ArrayBuffer;
+  send(msg: ArrayBufferView): null | Uint8Array;
   print(x: string): void;
 }