fix: declaration merging

Author: tmm

.changeset/big-houses-tickle.md

@@ -0,0 +1,5 @@
+---
+"@wagmi/core": patch
+---
+
+Switched `Register` to `interface` to fix declaration merging.

.github/workflows/verify.yml

@@ -64,7 +64,7 @@ jobs:
     timeout-minutes: 5
     strategy:
       matrix:
-        typescript-version: ['5.0.4', '5.1.6', '5.2.2', '5.3.3', '5.4.5']
+        typescript-version: ['5.0.4', '5.1.6', '5.2.2', '5.3.3', '5.4.5', '5.5.2']
         viem-version: ['2.9.31', 'latest']
 
     steps:

package.json

@@ -58,7 +58,7 @@
     "publint": "^0.2.7",
     "sherif": "^0.8.4",
     "simple-git-hooks": "^2.11.1",
-    "typescript": "5.4.5",
+    "typescript": "5.5.2",
     "viem": "2.9.31",
     "vitest": "^1.6.0"
   },

packages/core/src/types/register.ts

@@ -1,7 +1,7 @@
 import type { Config } from '../createConfig.js'
 
-// biome-ignore lint/complexity/noBannedTypes:
-export type Register = {}
+// biome-ignore lint/suspicious/noEmptyInterface: <explanation>
+export interface Register {}
 export type ResolvedRegister = {
   config: Register extends { config: infer config extends Config }
     ? config