Added a comparison for Response API

Author: Guthib-of-Dan

.github/workflows/demonstration.yml

@@ -20,3 +20,5 @@ jobs:
         run: bun run demo:decoding
       - name: Memory usage with intermediate string
         run: bun run demo:gc-strings
+      - name: Compare await new Response(buffer).json() and JSON.parse(buffer.toString())
+        run: bun run demo:against-response

demo/against-ResponseAPI.mjs

@@ -0,0 +1,30 @@
+var payload1 = '{"key":"value", "key2": 123123}';
+console.info("Payload to be tested: ", payload1)
+var buffer1 = Buffer.from(payload1)
+console.time("JSON.parse")
+for (var i = 0; i < 1_000_000; i++) {
+  JSON.parse(buffer1.toString());
+}
+console.timeEnd("JSON.parse")
+console.time("await Response.json()")
+for (var i = 0; i < 1_000_000; i++) {
+  await new Response(buffer1).json()
+}
+console.timeEnd("await Response.json()")
+
+
+var payload2 = JSON.stringify(
+  new Array(100).fill({"key":"value", "key2": 123123})
+);
+console.info("Payload - an array of " + payload1, "; Length in js characters:", payload2.length)
+var buffer2 = Buffer.from(payload2)
+console.time("JSON.parse")
+for (var i = 0; i < 1_000_00; i++) {
+  JSON.parse(buffer2.toString());
+}
+console.timeEnd("JSON.parse")
+console.time("await Response.json()")
+for (var i = 0; i < 1_000_00; i++) {
+  await new Response(buffer2).json()
+}
+console.timeEnd("await Response.json()")

package.json

@@ -10,7 +10,8 @@
     "demo:decoding": "node demo/decoding.mjs",
     "demo:json": "node demo/json-parse.mjs",
     "demo:gc-strings": "node --expose-gc demo/gc-strings.mjs && node --max-old-space-size=25 --expose-gc demo/gc-strings.mjs",
-    "demo:all": "bun run demo:errors && bun run demo:decoding && bun run demo:json"
+    "demo:against-response": "node demo/against-ResponseAPI.mjs && deno demo/against-ResponseAPI.mjs && bun demo/against-ResponseAPI.mjs",
+    "demo:all": "bun run demo:errors && bun run demo:decoding && bun run demo:json && bun run demo:against-response"
   },
   "homepage": "https://github.com/Guthib-of-Dan/proposal-json-parse-binary#readme",
   "repository": {