a patch for critools (https://github.com/kohos/CriTools) to support 4-byte ids

critools.diff

diff --git a/src/afs2.js b/src/afs2.js
index 59ab4d5..18d0f6e 100644
--- a/src/afs2.js
+++ b/src/afs2.js
@@ -18,14 +18,19 @@ async function parseAFS2(buffer) {
   if (config.magic !== 'AFS2') return null;
   config.unknown1 = buffer.readUInt8(pos); pos += 1;
   config.sizeLen = buffer.readUInt8(pos); pos += 1;
-  config.unknown2 = buffer.readUInt8(pos); pos += 1;
+  config.idLen = buffer.readUInt8(pos); pos += 1;
   config.unknown3 = buffer.readUInt8(pos); pos += 1;
   config.fileCount = buffer.readUInt32LE(pos); pos += 4;
   config.align = buffer.readUInt16LE(pos); pos += 2;
   config.key = buffer.readUInt16LE(pos); pos += 2;
   config.fileIds = [];
   for (let i = 0; i < config.fileCount; i++) {
-    const fileId = buffer.readUInt16LE(pos); pos += 2;
+    let fileId;
+    if (config.idLen === 2) {
+      fileId = buffer.readUInt16LE(pos); pos += 2;
+    } else if (config.idLen === 4) {
+      fileId = buffer.readUInt32LE(pos); pos += 4;
+    } else debugger;
     config.fileIds.push(fileId);
   }
   const files = [];