Honojs with Fastly about js-compute-runtime

[JakeChampion]

Howdy,
It looks to me like @hanazuki/node-jsonnet depends on running in a nodejs environment and expects nodejs built-in packages to exist such as fs and path. js-compute-runtime is not based on nodejs and does not have the same built-in packages as nodejs, which is why @hanazuki/node-jsonnet does not work

[rahul007-bit]

Thank you for your reply and time!

the error also suggests that we can specify this "platform: 'node'" somewhere,
does this suggestion is provided by fastly-compute-runtime or honojs?

and once again Thank you so much for your time!! 🙏🏼

[JakeChampion]

Unfortunately setting "platform: 'node'" will not solve the issue as that is telling the bundler that your target environment is node and so has the node built-ins such as FS and path, but your target environment is not node and does not have those built-ins

[rahul007-bit]

@JakeChampion That's unfortunate, but is there any way I can read files in js-compute-runtime from the src directory like JSON or yaml files so that I can find some alternative to @hanazuki/node-jsonnet

[JakeChampion]

Yes, you can include the file during build/compile time using includeBytes and then convert to a string and then parse using JSON/yaml.

Something like this:

/// <reference types="@fastly/js-compute" />

import { includeBytes } from "fastly:experimental";

const decoder = new TextDecoder();
const config = JSON.parse(decoder.decode(includeBytes('src/config.json')));

async function app() {
    return new Response("hello");
}
addEventListener("fetch", event => event.respondWith(app(event)));

An alternative would be to store the JSON/yaml files in a KV Store and then use the JSON method when reading them:

/// <reference types="@fastly/js-compute" />

import { KVStore } from "fastly:kv-store";

async function app(event) {
  const files = new KVStore('files')

  const entry = await files.get('config')
  const config = await entry.json()
  return new Response("hello")
}

addEventListener("fetch", (event) => event.respondWith(app(event)))

[rahul007-bit]

This looks perfect!!
Once again, thank you for your time!