handle preflight

index.mjs

@@ -45,12 +45,16 @@ var provider = new YouProvider(config);
 await provider.init(config);
 
 // handle preflight request
-app.options("/v1/messages", (req, res) => {
+app.use((req, res, next) => {
+    if (req.method === "OPTIONS") {
         res.setHeader("Access-Control-Allow-Origin", "*");
         res.setHeader("Access-Control-Allow-Methods", "*");
         res.setHeader("Access-Control-Allow-Headers", "*");
         res.setHeader("Access-Control-Max-Age", "86400");
         res.status(200).end();
+    } else {
+        next();
+    }
 });
 // openai format model request
 app.get("/v1/models", OpenAIApiKeyAuth, (req, res) => {
@@ -122,7 +126,6 @@ app.post("/v1/chat/completions", OpenAIApiKeyAuth, (req, res) => {
 				completion.on("completion", (id, text) => {
 					if (jsonBody.stream) {
 						// send message delta
-						if (jsonBody.stream) {
 						res.write(
 							createEvent("data", {
 								choices: [
@@ -145,7 +148,6 @@ app.post("/v1/chat/completions", OpenAIApiKeyAuth, (req, res) => {
 								system_fingerprint: "114514",
 							})
 						);
-						}
 					} else {
 						// 只会发一次，发送final response
 						res.write(
@@ -312,7 +314,6 @@ app.post("/v1/messages", AnthropicApiKeyAuth, (req, res) => {
 				completion.on("completion", (id, text) => {
 					if (jsonBody.stream) {
 						// send message delta
-						if (jsonBody.stream) {
 						res.write(
 							createEvent("content_block_delta", {
 								type: "content_block_delta",
@@ -320,7 +321,6 @@ app.post("/v1/messages", AnthropicApiKeyAuth, (req, res) => {
 								delta: { type: "text_delta", text: text },
 							})
 						);
-						}
 					} else {
 						// 只会发一次，发送final response
 						res.write(