From fbfe03dc316cde25faf8425444b69c39082c1d9c Mon Sep 17 00:00:00 2001
From: Kieran O'Neill <hello@kieranoneill.com>
Date: Fri, 15 Aug 2025 20:07:45 +0200
Subject: [PATCH] fix(chains): uses conditional namespace for inferring chain
 type

---
 packages/chains/src/types/chains/Chain.ts            | 11 ++++++++++-
 packages/chains/src/types/chains/ChainConstructor.ts | 11 ++++++++++-
 2 files changed, 20 insertions(+), 2 deletions(-)

diff --git a/packages/chains/src/types/chains/Chain.ts b/packages/chains/src/types/chains/Chain.ts
index af6d160..7fdbb0e 100644
--- a/packages/chains/src/types/chains/Chain.ts
+++ b/packages/chains/src/types/chains/Chain.ts
@@ -1,6 +1,15 @@
 // decorators
 import { AVMChain, EVMChain } from '@/decorators';
 
-type Chain = AVMChain | EVMChain;
+// enums
+import { CAIP002Namespace } from '@/enums';
+
+type Chain<Namespace = CAIP002Namespace> = Namespace extends CAIP002Namespace.Algorand
+  ? AVMChain
+  : Namespace extends CAIP002Namespace.AVM
+    ? AVMChain
+    : Namespace extends CAIP002Namespace.EIP155
+      ? EVMChain
+      : never;
 
 export default Chain;
diff --git a/packages/chains/src/types/chains/ChainConstructor.ts b/packages/chains/src/types/chains/ChainConstructor.ts
index b2ad804..2aa173d 100644
--- a/packages/chains/src/types/chains/ChainConstructor.ts
+++ b/packages/chains/src/types/chains/ChainConstructor.ts
@@ -1,6 +1,15 @@
 // decorators
 import { AVMChain, EVMChain } from '@/decorators';
 
-type ChainConstructor = typeof AVMChain | typeof EVMChain;
+// enums
+import { CAIP002Namespace } from '@/enums';
+
+type ChainConstructor<Namespace = CAIP002Namespace> = Namespace extends CAIP002Namespace.Algorand
+  ? typeof AVMChain
+  : Namespace extends CAIP002Namespace.AVM
+    ? typeof AVMChain
+    : Namespace extends CAIP002Namespace.EIP155
+      ? typeof EVMChain
+      : never;
 
 export default ChainConstructor;