chore: create bench dir

bench/README.md

@@ -0,0 +1,37 @@
+## Benchmarks
+
+We are still trying to find a fair way to compare the performance of various
+Nostr libraries. You should NOT consider the current results reliable.
+
+### Method
+
+WIP
+
+### Results
+
+```sh
+cpu: Intel(R) Core(TM) i7-7600U CPU @ 2.80GHz
+runtime: deno 1.41.3 (x86_64-unknown-linux-gnu)
+
+file:///home/hasundue/lophus/bench/bench.ts
+benchmark        time (avg)        iter/s             (min … max)       p75       p99      p995
+----------------------------------------------------------------- -----------------------------
+
+# Time to deliver a request to a relay
+group subscribe
+lophus           52.32 µs/iter      19,111.7    (18.74 µs … 6.17 ms) 52.78 µs 132.19 µs 165.39 µs
+nostr_tools      49.33 µs/iter      20,270.0  (38.33 µs … 182.21 µs) 49.32 µs 111.07 µs 133.75 µs
+
+summary
+  lophus
+   1.06x slower than nostr_tools
+
+# Time to get an event from a relay
+group get an event
+lophus            56.3 µs/iter      17,761.7     (27.8 µs … 8.69 ms) 44.75 µs 119.7 µs 166.07 µs
+nostr_tools       2.44 ms/iter         409.6     (2.11 ms … 4.93 ms) 2.34 ms 4.4 ms 4.93 ms
+
+summary
+  lophus
+   43.36x faster than nostr_tools
+```

bench/bench.ts

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+import { MockWebSocket } from "@lophus/lib/testing";
+import { TextNoteComposer } from "@lophus/std/notes";
+import { generatePrivateKey, Signer } from "@lophus/std/signs";
+
+const LIBS = ["lophus", "nostr_tools"] as const;
+
+const nsec = generatePrivateKey();
+const note = new TextNoteComposer().compose({
+  content: "bench",
+});
+const event = new Signer(nsec).sign(note);
+
+for (const lib of LIBS) {
+  Deno.bench({
+    name: lib,
+    baseline: lib === "lophus",
+    group: "subscribe",
+    async fn({ start, end }) {
+      const { setup, subscribe } = await import(`./${lib}.ts`);
+      const done = (async () => {
+        const { value: ws } = await MockWebSocket.instances().next();
+        return new Promise((resolve) =>
+          ws!.remote.addEventListener("message", resolve)
+        );
+      })();
+      setup({ WebSocket: MockWebSocket });
+      start();
+      subscribe();
+      await done;
+      end();
+    },
+  });
+
+  Deno.bench({
+    name: lib,
+    baseline: lib === "lophus",
+    group: "get an event",
+    async fn({ start, end }) {
+      const { setup, subscribe, receive } = await import(`./${lib}.ts`);
+      setup({ WebSocket: MockWebSocket });
+      const sent = (async () => {
+        const { value: ws } = await MockWebSocket.instances().next();
+        return new Promise<void>((resolve) => {
+          ws!.remote.addEventListener("message", (msg) => {
+            const [, id] = JSON.parse(msg.data);
+            ws!.remote.send(
+              JSON.stringify(["EVENT", id, event]),
+            );
+            resolve();
+          });
+        });
+      })();
+      start();
+      const sub = await subscribe();
+      const received = receive(sub);
+      await sent;
+      await received;
+      end();
+    },
+  });
+}

bench/lophus.ts

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+import { NostrEvent, Relay } from "@lophus/nips";
+import { BenchContext } from "./types.ts";
+
+export function setup(c: BenchContext) {
+  globalThis.WebSocket = c.WebSocket;
+}
+
+export function subscribe() {
+  const relay = new Relay("ws://localhost:80");
+  return relay.subscribe({ kinds: [1] }, { id: "bench" });
+}
+
+export async function receive(sub: ReadableStream<NostrEvent<1>>) {
+  await sub.getReader().read();
+}

bench/nostr_tools.ts

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+import { Relay, useWebSocketImplementation } from "nostr-tools/relay";
+import { BenchContext } from "./types.ts";
+
+let received: (() => void) | undefined;
+
+export function setup(c: BenchContext) {
+  useWebSocketImplementation(c.WebSocket);
+}
+
+export async function subscribe() {
+  const relay = await Relay.connect("ws://localhost:80");
+  return relay.subscribe([{ kinds: [1] }], { onevent: () => received?.() });
+}
+
+export async function receive() {
+  await new Promise<void>((resolve) => {
+    received = resolve;
+  });
+}

bench/types.ts

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+export interface BenchContext {
+  WebSocket: typeof WebSocket;
+}

deno.json

@@ -31,7 +31,8 @@
     "@lophus/std/watch": "./std/watch.ts",
     "@std/assert": "jsr:@std/assert@^0.219.1",
     "@std/streams": "jsr:@std/streams@^0.219.1",
-    "@std/testing": "jsr:@std/testing@^0.219.1"
+    "@std/testing": "jsr:@std/testing@^0.219.1",
+    "nostr-tools": "npm:[email protected]"
   },
   "tasks": {
     "build": "mkdir -p ./dist && deno run -A ./bin/bundle.ts",