@zerodev/sdk
Version:
A utility library for working with ERC-4337
39 lines • 1.44 kB
JavaScript
import { getStorageAt } from "viem/actions";
import { getAction, getAddress, isHex, slice, toHex } from "viem/utils";
import { KERNEL_IMPLEMENTATION_SLOT } from "../../constants.js";
/**
* Returns the address of the kernel implementation.
*
* @param client {@link client} that you created using viem's createPublicClient.
* @param args {@link GetKernelImplementationAddressParams} address
* @returns Address
*
* @example
* import { createPublicClient } from "viem"
* import { getKernelImplementationAddress } from "@zerodev/sdk/actions"
*
* const client = createPublicClient({
* chain: goerli,
* transport: http("https://goerli.infura.io/v3/your-infura-key")
* })
*
* const kernelImplementationAddress = await getKernelImplementationAddress(client, {
* address,
* })
*
* // Return 0x0000000000000000000000000000000000000000
*/
export const getKernelImplementationAddress = async (client, args) => {
const { address } = args;
const storageValue = await getAction(client, getStorageAt, "getStorageAt")({
address,
slot: KERNEL_IMPLEMENTATION_SLOT
});
if (!storageValue) {
throw new Error("Kernel implementation address not found");
}
const addressSlice = slice(storageValue, 12);
const addressHex = isHex(addressSlice) ? addressSlice : toHex(addressSlice);
return getAddress(addressHex);
};
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