convert to typescript

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

@@ -0,0 +1,29 @@
+import { Constants } from '../../constants';
+import chunk, { Chunk } from '../chunk';
+import infoTrackerChunk, { InfoTrackerChunk } from './info-tracker-chunk';
+
+export interface InfoTrackerListChunk extends Chunk {
+  trackers: {
+    [key: number]: InfoTrackerChunk;
+  };
+}
+function decodeInfoTrackerListChunk(infoTrackerListChunk: InfoTrackerListChunk) {
+  infoTrackerListChunk.trackers = {};
+  if (infoTrackerListChunk.has_subchunks && infoTrackerListChunk.chunk_data) {
+    let offset = 0;
+    if (infoTrackerListChunk.data_len) {
+      while (offset < infoTrackerListChunk.data_len) {
+        const trackerChunk = infoTrackerChunk(infoTrackerListChunk.chunk_data.subarray(offset));
+        offset += Constants.CHUNK_HEADER_SIZE;
+        if (trackerChunk.data_len) {
+          offset += trackerChunk.data_len;
+        }
+        if (trackerChunk.id) {
+          infoTrackerListChunk.trackers[trackerChunk.id] = trackerChunk;
+        }
+      }
+    }
+  }
+}
+export default (buffer: Buffer): InfoTrackerListChunk =>
+  chunk(buffer, decodeInfoTrackerListChunk) as InfoTrackerListChunk;