Nano-rpc-client NPM

Nano RPC client

A simple and strongly typed client for Nano's RPC, written in Typescript.

Usage

In node, you have to provide a fetch function

import NanoRpcClient from 'nano-rpc-client'
import nodeFetch from 'node-fetch'

const client = new NanoRpcClient('https://my.nano.node/rpc', nodeFetch)

If you're in the browser, window.fetch is used by default

import NanoRpcClient from 'nano-rpc-client'

const client = new NanoRpcClient('https://my.nano.node/rpc')

RPC command arguments and their results are strongly typed

const info = await client.accountInfo('nano_1pnano1yzoxyk11geczosh1bwh97w5t1kfmokwz8hkgiy55h6a7rz6dyr1tm')

info.balance // this is a bigint
info.confirmedBalance // this throws an error at compile time because it doesn't exist

const confirmedInfo = await client.accountInfo('nano_1pnano1yzoxyk11geczosh1bwh97w5t1kfmokwz8hkgiy55h6a7rz6dyr1tm', { includeConfirmed: true })

confirmedInfo.confirmedBalance // this exists (and is a bigint) at compile time because you added the `includeConfirmed` option

You can pass an AbortSignal to all calls to cancel them

const controller = new AbortController()

const confirmedInfo = await client.accountInfo('nano_1pnano1yzoxyk11geczosh1bwh97w5t1kfmokwz8hkgiy55h6a7rz6dyr1tm', undefined, { abortSignal: controller.signal })

if('someCondition')
    controller.abort()

Errors in the RPC command (normally returned in the body) are thrown as RpcErrors that contain a message

try {
    const info = await client.accountInfo('')
} catch (e) {
    console.log(e.message) // logs "Bad account number"
}

Goals

To be the de facto JS RPC client, with strong argument typing and great autocomplete
To eventually be included as an official package of the nano ecosystem (meaning, distributed under an easily recognizable name like @nano/rpc or @nano-utils/rpc or something like that)
To support the most current version of the RPC spec
In the future, validate arguments before the request is made (for example, validate nano address strings or number strings)