From f7adb7b28e6f7f11a21d642f4f422cdb30fef9e3 Mon Sep 17 00:00:00 2001
From: musistudio <m@musiiot.top>
Date: Tue, 9 Sep 2025 22:43:01 +0800
Subject: [PATCH] release v1.0.49

---
 package.json        |  2 +-
 src/index.ts        | 14 +++++++++-----
 src/utils/router.ts |  6 ++++++
 3 files changed, 16 insertions(+), 6 deletions(-)

diff --git a/package.json b/package.json
index ca2a631..24cbf54 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
   "name": "@musistudio/claude-code-router",
-  "version": "1.0.48",
+  "version": "1.0.49",
   "description": "Use Claude Code without an Anthropics account and route it to another LLM provider",
   "bin": {
     "ccr": "./dist/cli.js"
diff --git a/src/index.ts b/src/index.ts
index c10534a..207b9e9 100644
--- a/src/index.ts
+++ b/src/index.ts
@@ -358,12 +358,16 @@ async function run(options: RunOptions = {}) {
         return done(null, originalStream)
       }
       sessionUsageCache.put(req.sessionId, payload.usage);
-    }
-    if (typeof payload ==='object') {
-      if (payload.error) {
-        return done(payload.error, null)
+      if (typeof payload ==='object') {
+        if (payload.error) {
+          return done(payload.error, null)
+        } else {
+          return done(payload, null)
+        }
       }
-      return done(payload)
+    }
+    if (typeof payload ==='object' && payload.error) {
+      return done(payload.error, null)
     }
     done(null, payload)
   });
diff --git a/src/utils/router.ts b/src/utils/router.ts
index 1977e2e..2d54503 100644
--- a/src/utils/router.ts
+++ b/src/utils/router.ts
@@ -5,6 +5,7 @@ import {
 } from "@anthropic-ai/sdk/resources/messages";
 import { get_encoding } from "tiktoken";
 import { sessionUsageCache, Usage } from "./cache";
+import { readFile } from 'fs/promises'
 
 const enc = get_encoding("cl100k_base");
 
@@ -147,6 +148,11 @@ export const router = async (req: any, _res: any, context: any) => {
   }
   const lastMessageUsage = sessionUsageCache.get(req.sessionId);
   const { messages, system = [], tools }: MessageCreateParamsBase = req.body;
+  if (config.REWRITE_SYSTEM_PROMPT && system.length > 1 && system[1]?.text?.includes('<env>')) {
+    const prompt = await readFile(config.REWRITE_SYSTEM_PROMPT, 'utf-8');
+    system[1].text = `${prompt}<env>${system[1].text.split('<env>').pop()}`
+  }
+
   try {
     const tokenCount = calculateTokenCount(
       messages as MessageParam[],