Context: https://github.com/unjs/unstorage/issues/230

unstorage-deno-bench.ts

import { bench, summary, run } from "mitata";
import { createStorage, defineDriver } from "unstorage";
import fsLite from "unstorage/drivers/fs-lite";

const denoDriver = defineDriver((opts) => {
  return {
    async getItem(key: string) {
      const val = await Deno.readTextFile(`${opts.base}/${key}`);
      return val;
    },
    async setItem(key: string, value: string) {
      // Similar to fs-lite ensureDir
      try {
        Deno.statSync(opts.base);
      } catch {
        await Deno.mkdir(`${opts.base}`, { recursive: true });
      }
      await Deno.writeTextFile(`${opts.base}/${key}`, value);
    },
  };
});

summary(() => {
  const storage = createStorage({});
  storage.mount("node", fsLite({ base: "./.data/node" }));
  storage.mount("deno", denoDriver({ base: "./.data/deno" }));

  bench("node-api", async () => {
    await storage.setItem("node/test", "Hello, world!");
    const value = await storage.getItem("node/test");
    if (value !== "Hello, world!") {
      throw new Error("Invalid value: " + value);
    }
  });

  bench("deno-api", async () => {
    await storage.setItem("deno/test", "Hello, world!");
    const value = await storage.getItem("deno/test");
    if (value !== "Hello, world!") {
      throw new Error("Invalid value: " + value);
    }
  });
});

await run();