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Local Provider

This feature is available in the Hedera JavaScript SDK only. (version >=2.14.0).
LocalProvider is a quality of life implementation that creates a provider using the HEDERA_NETWORK environment variable.
The LocalProvider() requires the following variable to be defined in the .env file. The .env file is located in the root directory of the project.
  • HEDERA_NETWORK
    • The network the wallet submits transactions to
.env
//Example .env file
HEDERA_NETWORK= previewnet/testnet/mainnet (select one network)

class LocalProvider implements Wallet

Constructor

new LocalProvider()

Instantiates the LocalProvider object. The local provider is built using HEDERA_NETWORK network specified in the .env file.

Methods

<LocalProvider>.getAccountBalance()** -> Promise <AccountBalance>**

Returns the account balance of the account in the local wallet.

<LocalProvider>.getAccountInfo()** -> Promise <AccountInfo>**

Returns the account information of the account in the local wallet.

<LocalProvider>.getAccountRecords()** -> Promise <AccountInfo>**

Returns the last transaction records for this account using TransactionRecordQuery.

<LocalProvider>.getLedgerId()->** LedgerId**

Returns the ledger ID (previewnet, testnet, or mainnet).

<LocalProvider>.getMirrorNetwork()->** string**

The mirror network the wallet is connected to.

<LocalProvider>.getNetwork()->** [key: string]: string | **** AccountId**

Returns the network map information.

<LocalProvider>.getTransactionReceipt()-> Promise<TransactionReceipt>

Returns the transaction receipt.

<LocalProvider>.waitForReceipt()-> Promise<TransactionReceipt>

Wait for the receipt for a transaction response.
<LocalProvider>.call(<RequestT, ResponseT, OutputT>(request: Executable<RequestT, ResponseT, OutputT>)->** Promise <Output>**
Sign and send a request using the wallet.

Local Wallet Example:

require("dotenv").config();
import { Wallet, LocalProvider } from "@hashgraph/sdk";
async function main() {
const wallet = new Wallet(
process.env.OPERATOR_ID,
process.env.OPERATOR_KEY,
new LocalProvider()
);
const info = await wallet.getAccountInfo();
console.log(`info.key = ${info.key.toString()}`);
}
void main();

Sign with Local Wallet Example:

require("dotenv").config();
const {Wallet, LocalProvider, TransferTransaction} = require("@hashgraph/sdk");
async function main() {
const wallet = new Wallet(
process.env.OPERATOR_ID,
process.env.OPERATOR_KEY,
new LocalProvider()
);
//Transfer 1 hbar from my wallet account to account 0.0.3
const transaction = await new TransferTransaction()
.addHbarTransfer(wallet.getAccountId(), -1)
.addHbarTransfer("0.0.3", 1)
.freezeWithSigner(wallet);
//Sign the transaction
const signTransaction = await transaction.signWithSigner(wallet);
//Submit the transaction
const response = await signTransaction.executeWithSigner(wallet);
//Get the receipt
const receipt = await wallet.getProvider().waitForReceipt(response);
console.log(`status: ${receipt.status.toString()}`);
}
main();
Last modified 2mo ago