flowbatcher/index.js

Save gas by batching multiple ETH and ERC-20 transactions into a single operation, optimizing efficiency and reducing costs.

/**
 * flowBatcher SDK Example
 *
 * This file demonstrates how to use the flowBatcher SDK to send ERC-20 tokens and
 * native Ethereum (ETH) to multiple recipients in a single transaction. It handles the process
 * of creating a provider, signing transactions, and executing batch transfers efficiently.
 *
 * Environment variables like Ethereum node URL and wallet private key are loaded from the .env file.
 */


require("dotenv").config({ path: "./.env" })

const { createProviderAndSigner } = require("./src/lib/ethers.lib.src")
const SDK = require("./src/sdk")
const config = require("./src/config")
const validatorsUtil = require("./src/utils/validators.utils")

// Set up provider and signer using the utility function
const { provider, signer } = createProviderAndSigner(
  process.env.ETH_NODE_URL,
  process.env.WALLET_PRIVATE_KEY,
)

// Initialize the SDK
const sdk = new SDK(provider, signer, config)

// Example Usage
;(async () => {
  try {
    // Example to send ERC-20 in batch
    const recipients = [
      "0x93297d48A40446dc84a388BB94F3A1247CB74870",
      "0x50da5C365a08169A9101C1969492540dA937071F",
    ]
    const amounts = [1, 2]
    validatorsUtil.isEmpty()
    await sdk.batchTransferERC20(recipients, amounts)

    // Example to send Native ETH in batch
    //sdk.batchTransferNative(recipients, [0.01, 0.02]).catch(console.error);
  } catch (error) {
    throw error
  }
})()