Can I read and parse static json file with cloudflare-workers?

[hectorAguero]

I had a json list file in my static folder that I use to search an item by id(basically like a table/document but small).

With Deno.readTextFile or node:fs/promises, is easy to do, but cloudflare workers doesn't support that.

Based on the docs I figure out I can do with serve static file, but I need to search inside the json also, so I need to retrieve the file, parse, search and return the item.

Edit: add code example

pokemons.get('/:id', async (context) => {
    const id = parseInt(context.req.param('id'));
    const { language } = context.req.query();
    //  const file = await Deno.readTextFile(`pokemons_${ language || 'en'}.json`);
    const file =  app.get(`*`, serveStatic({ path: `pokemons_${ language || 'en'}.json` }));
    // Parse the JSON into JavaScript object
    const pokemons = JSON.parse(file);
    // Find the Pokemon with the matching id
    const pokemon = pokemons.find((pokemon: Pokemon) => pokemon.id === id);
    if (!pokemon) {
      return context.json({ error: 'Pokemon not found' }, 404);
    } else {
      return context.json(pokemon);
    }
  });

[yusukebe]

Hi @hectorAguero!

You've raised an excellent point, and I've been contemplating the best approach to address it. Indeed, unlike Deno, Bunt, and Node.js, Cloudflare Workers doesn't have a conventional "file-system". This certainly complicates matters.

I've experimented with the "Workers Sites" before, which serves assets for Cloudflare Workers via Cloudflare KV. Here's a relevant example for reference:

https://github.com/yusukebe/ramen-api

In this project, content JSON files are stored in the Workers Sites (KV), and content is retrieved using getContentFromKVAsset() from Hono's utilities. While this feels like an good "workaround", there's a catch. Cloudflare has hinted at deprecating "Workers Sites".

https://developers.cloudflare.com/workers/configuration/sites/

They now recommend Cloudflare Pages over Workers Sites. This leaves us with using KV, R2, or bundling everything into a single JavaScript file. None of these methods seem ideal. I've also contemplated creating a blog system that reads Markdown files, but I anticipate encountering a similar challenge.

Let's keep this thread open and active. I'll consult with other developers at Cloudflare.

[nicholasglazer]

this is written in Hono docs
https://hono.dev/docs/getting-started/cloudflare-workers#serve-static-files