align structure more with underlying chunk layout

src/decoders/info/info-tracker-list-chunk.ts

@@ -1,24 +1,33 @@
 import { Decoders } from '..';
 import { Constants } from '../../constants';
-import { InfoTrackerListChunk } from '../../models/info/info-tracker-list-chunk';
+import { InfoTrackerChunk } from '../../models/info/info-tracker-chunk';
+import { InfoTrackerListChunk, InfoTrackerListChunkData } from '../../models/info/info-tracker-list-chunk';
 
-function decodeInfoTrackerListChunk(infoTrackerListChunk: InfoTrackerListChunk) {
-  infoTrackerListChunk.trackers = {};
-  if (infoTrackerListChunk.has_subchunks && infoTrackerListChunk.chunk_data) {
+export default (buffer: Uint8Array): InfoTrackerListChunk => {
+  const chunk = Decoders.Chunk(buffer);
+
+  const trackers: InfoTrackerChunk[] = [];
+
+  if (chunk.header.hasSubchunks && chunk.chunkData) {
     let offset = 0;
-    if (infoTrackerListChunk.data_len) {
-      while (offset < infoTrackerListChunk.data_len) {
-        const trackerChunk = Decoders.InfoTrackerChunk(infoTrackerListChunk.chunk_data.slice(offset));
+    if (chunk.header.dataLen) {
+      while (offset < chunk.header.dataLen) {
+        const trackerChunk = Decoders.InfoTrackerChunk(chunk.chunkData.subarray(offset));
         offset += Constants.CHUNK_HEADER_SIZE;
-        if (trackerChunk.data_len) {
-          offset += trackerChunk.data_len;
+        if (trackerChunk.chunk.header.dataLen) {
+          offset += trackerChunk.chunk.header.dataLen;
         }
-        if (trackerChunk.id !== undefined) {
-          infoTrackerListChunk.trackers[trackerChunk.id] = trackerChunk;
+        if (trackerChunk.chunk.header.id !== undefined) {
+          trackers.push(trackerChunk);
         }
       }
     }
   }
-}
-export default (buffer: Uint8Array): InfoTrackerListChunk =>
-  Decoders.Chunk(buffer, decodeInfoTrackerListChunk) as InfoTrackerListChunk;
+  const data: InfoTrackerListChunkData = {
+    trackers,
+  };
+  return {
+    chunk,
+    data,
+  };
+};