lnd js client

lnd.js

const fs = require('fs')
const grpc = require('grpc')
const protoLoader = require('@grpc/proto-loader')

var packageDefinition = protoLoader.loadSync(
  __dirname + '/rpc.proto',
  {keepCase: true,
    longs: String,
    enums: String,
    defaults: true,
    oneofs: true
  })

var lnrpcDescriptor = grpc.loadPackageDefinition(packageDefinition)
const lnrpc = lnrpcDescriptor.lnrpc

module.exports = (endpoint, certPath, macaroonPath) => {
  process.env.GRPC_SSL_CIPHER_SUITES = 'HIGH+ECDSA'

  const tls = grpc.credentials.createSsl(fs.readFileSync(certPath))
  const macaroon = grpc.credentials.createFromMetadataGenerator(function (args, callback) {
    const adminMacaroon = fs.readFileSync(macaroonPath)
    const metadata = new grpc.Metadata()
    metadata.add('macaroon', adminMacaroon.toString('hex'))
    callback(null, metadata)
  })
  const credentials = grpc.credentials.combineChannelCredentials(tls, macaroon)

  return new lnrpc.Lightning(endpoint, credentials)
}