truffle-hdwallet-provider-klaytn/src/subproviders/subprovider.js

HD Wallet-enabled Web3 provider for Klaytn

const createPayload = require("../util/create-payload.js");

module.exports = SubProvider;

// this is the base class for a subprovider -- mostly helpers

function SubProvider() { }

SubProvider.prototype.setEngine = function (engine) {
  const self = this;
  self.engine = engine;
  engine.on("block", function (block) {
    self.currentBlock = block;
  });
};

SubProvider.prototype.handleRequest = function () {
  throw new Error("Subproviders should override `handleRequest`.");
};

SubProvider.prototype.emitPayload = function (payload, cb) {
  const self = this;
  self.engine.sendAsync(createPayload(payload), cb);
};