話題のランタイムBunのパフォーマンスを体験してみた

$ curl -fsSL https://bun.sh/install | bash -s "bun-v1.0.7"

$ git clone git@github.com:oven-sh/bun.git
$ cd bun/packages/bun-lambda
$ bun install
$ bun run publish-layer

const bunCustomRuntime_default = {
  async fetch(request) {
    const url = new URL(request.url);
    const number = url.pathname.split("/").pop();
    try {
      const pokeApiResponse = await fetch(`https://pokeapi.co/api/v2/pokemon/${number}`);
      if (!pokeApiResponse.ok) {
        throw new Error(`API responded with status: ${pokeApiResponse.status}`);
      }
      const pokemonData = await pokeApiResponse.json();
      return new Response(pokemonData.name, {
        status: 200,
        headers: {
          "Content-Type": "text/plain"
        }
      });
    } catch (error) {
      console.error(error);
      return new Response(`Error: ${error.message}`, {
        status: 500,
        headers: {
          "Content-Type": "text/plain"
        }
      });
    }
  }
};
export {
  bunCustomRuntime_default as default
};

const axios = require("axios");

exports.handler = async (event) => {
  const number = event.pathParameters.number;

  try {
    const response = await axios.get(
      `https://pokeapi.co/api/v2/pokemon/${number}`
    );
    const pokemonData = response.data;

    return {
      statusCode: 200,
      headers: {
        "Content-Type": "text/plain",
      },
      body: pokemonData.name,
    };
  } catch (error) {
    return {
      statusCode: 500,
      headers: {
        "Content-Type": "text/plain",
      },
      body: `Error: ${error.message}`,
    };
  }
};