@biconomy/abstractjs
Version:
SDK for Biconomy integration with support for account abstraction, smart accounts, ERC-4337.
42 lines • 1.8 kB
JavaScript
import { pad, parseAbi, toHex } from "viem";
import { NEXUS_ACCOUNT_FACTORY_ADDRESS } from "../../constants/index.js";
import { AccountFactoryAbi } from "../../constants/abi/AccountFactory.js";
/**
* Gets the counterfactual address for a MEE Nexus account
*
* @param params - {@link GetUniversalAddressParams} Configuration for address computation
* @param params.publicClient - The public client to use for the read contract
* @param params.signerAddress - The address of the EOA signer
* @param params.index - Optional account index (defaults to 0)
*
* @returns Promise resolving to the {@link Address} of the counterfactual account
*
* @example
* const accountAddress = await getNexusAddress({
* publicClient: viemPublicClient,
* initData: "0x123...",
* index: BigInt(0)
* });
*/
export const getNexusAddress = async (params) => {
const { publicClient, initData, factoryAddress = NEXUS_ACCOUNT_FACTORY_ADDRESS, index = 0n } = params;
const salt = pad(toHex(index), { size: 32 });
return await publicClient.readContract({
address: factoryAddress,
abi: AccountFactoryAbi,
functionName: "computeAccountAddress",
args: [initData, salt]
});
};
export const getK1NexusAddress = async (params) => {
const { publicClient, k1FactoryAddress, ownerAddress, attesters, attesterThreshold, index = 0n } = params;
return await publicClient.readContract({
address: k1FactoryAddress,
abi: parseAbi([
"function computeAccountAddress(address owner, uint256 index, address[] attesters, uint8 threshold) public view returns (address)"
]),
functionName: "computeAccountAddress",
args: [ownerAddress, index, attesters, attesterThreshold]
});
};
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