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lnd-async

4.1.0 • Public • Published

lnd-async

This library simplifies connecting to the Bitcoin Lightning Network Daemon via gRPC. It wraps all callback functions in promises to make api calls easier to work with.

This library supports LND version 0.6.1-beta.

The default behavior assumes LND is running on localhost port 10009. It also assumes that macaroons are enabled and the tls.cert and admin.macaroon are found in the OS specific default data paths.

To establish a connection to gRPC localhost:10009 with macaroons:

const lnd = require('lnd-async');
 
async function getInfo() {
  let client = await lnd.connect();
  return await client.getInfo({});
}

This call can be customized to meet your specific needs:

const lnd = require('lnd-async');
 
async function getInfo() {
  let client = await lnd.connect({
    lndHost: '10.10.0.12',
    lndPort: 10019,
    certPath: __dirname + '/tls.cert',
    macaroonPath: __dirname + '/admin.macaroon',
  });
  return await client.getInfo({});
}

You can also specify cert and macaroon as base64 encoded string. Usefull if you do not want to keep them on the server.

const lnd = require('lnd-async');
 
async function getInfo() {
  let client = await lnd.connect({
    lndHost: '10.10.0.12',
    lndPort: 10019,
    cert: 'base64 cert',
    macaroon: 'base64 macaroon',
  });
  return await client.getInfo({});
}

You can also initiate calls with no macaroons by passing the noMacaroons flag. When this option is supplied, the macaroonPath is ignored.

const lnd = require('lnd-async');
 
async function getInfo() {
  let client = await lnd.connect({ noMacaroons: true });
  return await client.getInfo({});
}

Long integer treatment

The JavaScript Number type internally stores values as IEEE 754 floating point values. The max safe integer value is 2^53-1 which can result in data loss for 64-bit integers.

By default and for maximum portability, long values are returned as strings. This allows the consumer of the data to convert the long integers using any big number library they prefer.

grpc-node has accomodations for automatic number type conversion to Long.js. If you do not install Long.js, longs will be treated as JavaScript Number type and data loss may occur.

lnd-async allows customization of this handling via the setting longsAsNumbers. Setting this value to true will pass the Number setting in grpc-node. By default, this value is set to false to prevent data loss.

const lnd = require('lnd-async');
 
async function getInfo() {
  let client = await lnd.connect({ longsAsNumbers: true });
  return await client.getInfo({});
}

Versions

  • 4.1.0 - Updated for v0.11.1-beta, now includes all proto services
  • 4.0.0 - Updated for 0.8.1-beta, now includes all proto services
  • 3.0.0 - Support for 0.8.0-beta
  • 2.0.0 - Support for 0.7.1-beta, switching to valid SEMVER release format
  • 1.8.0 - Support for 0.6.1-beta
  • 1.7.0 - Add longsAsNumbers option
  • 1.6.0 - Support for 0.5.2-beta
  • 1.5.0 - Support for 0.5-beta
  • 1.4.0 - Support for base64 macaroon and cert files
  • 1.3.0 - Support for 0.4.2-beta
  • 1.2.0 - Support for 0.4.1-beta
  • 1.1.0 - Support for 0.4.0-beta

Install

npm i lnd-async

DownloadsWeekly Downloads

43

Version

4.1.0

License

MIT

Unpacked Size

205 kB

Total Files

29

Last publish

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