From 6ffb8616e3a62cbc1d120e69cf581e4557a38484 Mon Sep 17 00:00:00 2001
From: teidesu <me@tei.su>
Date: Mon, 31 May 2021 22:56:58 +0300
Subject: [PATCH] fix(sqlite): handle stored objects from older incompatible tl
 layers

---
 packages/sqlite/index.ts | 13 ++++++++++---
 1 file changed, 10 insertions(+), 3 deletions(-)

diff --git a/packages/sqlite/index.ts b/packages/sqlite/index.ts
index e613aac1..9237067b 100644
--- a/packages/sqlite/index.ts
+++ b/packages/sqlite/index.ts
@@ -116,7 +116,7 @@ interface SqliteEntity {
 
 interface CacheItem {
     peer: tl.TypeInputPeer
-    full: tl.TypeUser | tl.TypeChat
+    full: tl.TypeUser | tl.TypeChat | null
 }
 
 interface FsmItem {
@@ -267,11 +267,18 @@ export class SqliteStorage implements ITelegramStorage /*, IStateStorage */ {
         // todo: add support for workers (idk if really needed, but still)
     }
 
-    private _readFullPeer(data: Buffer): tl.TypeUser | tl.TypeChat {
+    private _readFullPeer(data: Buffer): tl.TypeUser | tl.TypeChat | null {
         // reuse reader because why not
         this._reader.pos = 0
         this._reader.data = data
-        const obj = this._reader.object()
+        let obj
+        try {
+            obj = this._reader.object()
+        } catch (e) {
+            // object might be from an older tl layer, in which case
+            // it should be ignored (i guess?????)
+            obj = null
+        }
         // remove reference to allow GC-ing
         this._reader.data = EMPTY_BUFFER
         return obj