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use-cardano-blockfrost-proxy

v1.0.0

Published

A next.js API route that is designed to be used with use-cardano for the blockfrost-proxy node provider

Downloads

17

Readme

use-cardano Blockfrost Next Proxy API

A next.js API route that is designed to be used with use-cardano for the blockfrost-proxy node provider.

Installation

this package can only be used in the context of a next.js project

  • npm i http-proxy
  • npm i use-cardano-blockfrost-proxy

Usage

1. Add env variables to your .env file

BLOCKFROST_PROJECT_ID_TESTNET=testnetMySecretBlockFrostProjectId
BLOCKFROST_PROJECT_ID_PREVIEW=previewMySecretBlockFrostProjectId
BLOCKFROST_PROJECT_ID_PREPROD=preprodMySecretBlockFrostProjectId
BLOCKFROST_PROJECT_ID_MAINNET=mainnetMySecretBlockFrostProjectId

2. Create an API route under pages/api/blockfrost/[[...all]].ts

export { blockfrostProxy as default } from "use-cardano-blockfrost-proxy"

Or, f you which to execute some additional logic before proxying the request to blockfrost

import { blockfrostProxy } from "use-cardano-blockfrost-proxy"

export default async (req, res) => {
  // do something before proxying the request to blockfrost
  return await blockfrostProxy(req, res)
}

3. Configure use-cardano to use the proxy

import { CardanoProvider, UseCardanoOptions } from "use-cardano"

const options: UseCardanoOptions = {
  node: {
    provider: "blockfrost-proxy",
    proxyUrl: "/api/blockfrost",
  },
}

const App = () => {
  return (
    <CardanoProvider options={options}>
      <div>...</div>
    </CardanoProvider>
  )
}

Why not use a middleware?

While I think it would be technically possible to implement this as a middleware, and that it potentially could be done more elegantly, I don't think it's logically sound to do so, since a middleware is executed for every request in the application, while this approach allows us to only handle the blockfrost requests specifically, at the small cost of the user having to add the file pages/api/blockfrost/[[...all]].ts.

Attribution

This package is based on (read copied) from https://www.npmjs.com/package/next-http-proxy-middleware. I chose to copy the code instead of using the package directly, since I wanted to be able to package the code as an es module and I had issues with typescript that I wanted to avoid.

LICENSE

MIT, see LICENSE for more information.