test: add bench and bundle tests

Author: pi0

package.json

@@ -27,6 +27,7 @@
     "dist"
   ],
   "scripts": {
+    "bench": "vitest bench",
     "build": "unbuild",
     "dev": "vitest dev",
     "lint": "eslint . && prettier -c src test",
@@ -44,6 +45,7 @@
     "esbuild": "^0.25.0",
     "eslint": "^9.20.1",
     "eslint-config-unjs": "^0.4.2",
+    "mitata": "^1.0.34",
     "prettier": "^3.5.1",
     "typescript": "^5.7.3",
     "unbuild": "^3.3.1",

pnpm-lock.yaml

@@ -0,0 +1,15 @@
+import { bench, describe } from "vitest";
+
+import { digest as digestJS } from "../src/crypto/js";
+import { digest as digestNode } from "../src/crypto/node";
+
+describe("benchmarks", () => {
+  describe("digest", () => {
+    bench("js", () => {
+      digestJS("hello world");
+    });
+    bench("node", () => {
+      digestNode("hello world");
+    });
+  });
+});

test/benchmarks.bench.ts

@@ -0,0 +1,49 @@
+import { describe, it, expect } from "vitest";
+import { fileURLToPath } from "node:url";
+import zlib from "node:zlib";
+import { build } from "esbuild";
+
+describe("bundle size", () => {
+  it("digest (js)", async () => {
+    const code = /* js */ `
+      import { digest } from "../src/crypto/js/index";
+      digest("")
+    `;
+    const { bytes, gzipSize } = await getBundleSize(code);
+    // console.log({ bytes, gzipSize });
+    expect(bytes).toBeLessThanOrEqual(3800); // <3.8kb
+    expect(gzipSize).toBeLessThanOrEqual(1900); // <1.9kb
+  });
+
+  it("serialize", async () => {
+    const code = /* js */ `
+      import { serialize } from "../src";
+      serialize("")
+    `;
+    const { bytes, gzipSize } = await getBundleSize(code);
+    // console.log({ bytes, gzipSize });
+    expect(bytes).toBeLessThanOrEqual(4400); // <4.4kb
+    expect(gzipSize).toBeLessThanOrEqual(1600); // <1.6kb
+  });
+});
+
+async function getBundleSize(code: string) {
+  const res = await build({
+    bundle: true,
+    metafile: true,
+    write: false,
+    minify: true,
+    format: "esm",
+    platform: "node",
+    outfile: "index.mjs",
+    stdin: {
+      contents: code,
+      resolveDir: fileURLToPath(new URL(".", import.meta.url)),
+      sourcefile: "index.mjs",
+      loader: "js",
+    },
+  });
+  const { bytes } = res.metafile.outputs["index.mjs"];
+  const gzipSize = zlib.gzipSync(res.outputFiles[0].text).byteLength;
+  return { bytes, gzipSize };
+}