Ensure decoder.decode handle cases where the input ends in the midd…

…le of non-English character (#28)

Ensure that the decoder.decode function can properly handle instances
where the input stream ends mid-way through a multi-byte, non-English
character. For more details, refer to the discussion at [Issue #184 on
the encoding GitHub
page](whatwg/encoding#184 (comment)).

app/v1/chat/completions/route.ts

@@ -67,7 +67,7 @@ async function chat(apiKey: string, body: any) {
             if (done) {
               controller.close()
             }
-            let data = decoder.decode(value)
+            let data = decoder.decode(value, { stream: true })
             if (isFirstEventData) {
               isFirstEventData = false
               if (shouldRetry(data)) {