align structure more with underlying chunk layout

src/decoders/data/data-tracker-timestamp-chunk.ts

@@ -0,0 +1,23 @@
+/* eslint-disable no-case-declarations */
+
+import { Decoders } from '..';
+import {
+  DataTrackerTimestampChunk,
+  DataTrackerTimestampChunkData,
+} from '../../models/data/data-tracker-timestamp-chunk';
+
+export default (buffer: Uint8Array): DataTrackerTimestampChunk => {
+  const chunk = Decoders.Chunk(buffer);
+
+  const view = new DataView(chunk.chunkData.buffer, chunk.chunkData.byteOffset, chunk.chunkData.byteLength);
+  const timestamp = view.getBigUint64(0, true);
+
+  const data: DataTrackerTimestampChunkData = {
+    timestamp,
+  };
+
+  return {
+    chunk,
+    data,
+  };
+};