Unrevert and fix smoothening changes (#155)

Unverts #151 and
fixes it. The issue is that when replaying the cache, for the first
`0...n-1` chunks, we need to include a newline.

packages/proxy/src/proxy.ts

@@ -328,12 +328,29 @@ export async function proxyV1({
       stream = new ReadableStream<Uint8Array>({
         start(controller) {
           if ("body" in cachedData && cachedData.body) {
-            controller.enqueue(new TextEncoder().encode(cachedData.body));
+            let splits = cachedData.body.split("\n");
+            for (let i = 0; i < splits.length; i++) {
+              controller.enqueue(
+                new TextEncoder().encode(
+                  splits[i] + (i < splits.length - 1 ? "\n" : ""),
+                ),
+              );
+            }
           } else if ("data" in cachedData && cachedData.data) {
             const data = Buffer.from(cachedData.data, "base64");
-            const uint8Array = new Uint8Array(data);
-            controller.enqueue(uint8Array);
+            let start = 0;
+            for (let i = 0; i < data.length; i++) {
+              if (data[i] === 10) {
+                // 10 is ASCII/UTF-8 code for \n
+                controller.enqueue(data.subarray(start, i + 1));
+                start = i + 1;
+              }
+            }
+            if (start < data.length) {
+              controller.enqueue(data.subarray(start));
+            }
           }
+
           controller.close();
         },
       });
@@ -485,7 +502,6 @@ export async function proxyV1({
             cacheKey,
             JSON.stringify({ headers: proxyResponseHeaders, data: dataB64 }),
           );
-          controller.terminate();
         },
       });