fix: transaction context's state to derive correct type

.changeset/cyan-sheep-explode.md

@@ -0,0 +1,5 @@
+---
+"frog": patch
+---
+
+Fixes the `unknown` state type by passing type arguments to `transaction` route.

src/routes/transaction.ts

@@ -8,18 +8,18 @@ import { getTransactionContext } from '../utils/getTransactionContext.js'
 import { parsePath } from '../utils/parsePath.js'
 import { requestToContext } from '../utils/requestToContext.js'
 
-export function transaction<state, env extends Env>(
+export function transaction<state, env extends Env, path extends string>(
   this: FrogBase<state, env>,
-  path: string,
+  path: path,
   handler: (
-    context: TransactionContext,
+    context: TransactionContext<path, state>,
   ) => HandlerResponse<TransactionResponse>,
   options: RouteOptions = {},
 ) {
   const { verify = this.verify } = options
 
   this.hono.post(parsePath(path), async (c) => {
-    const transactionContext = getTransactionContext({
+    const transactionContext = getTransactionContext<path, state>({
       context: await requestToContext(c.req, {
         hub:
           this.hub || (this.hubApiUrl ? { apiUrl: this.hubApiUrl } : undefined),

src/utils/getTransactionContext.ts

@@ -16,9 +16,9 @@ type GetTransactionContextParameters<state = unknown> = {
   req: HonoRequest
 }
 
-export function getTransactionContext<state>(
+export function getTransactionContext<path extends string, state>(
   parameters: GetTransactionContextParameters<state>,
-): TransactionContext<string, state> {
+): TransactionContext<path, state> {
   const { context, req } = parameters
   const {
     frameData,