viem
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JavaScript
import { readContract } from '../../actions/public/readContract.js';
import { isAddressEqual } from '../../utils/index.js';
import { l2SharedBridgeAbi } from '../constants/abis.js';
import { legacyEthAddress } from '../constants/address.js';
import { getDefaultBridgeAddresses } from './getDefaultBridgeAddresses.js';
/**
* Returns the L1 token address equivalent for a L2 token address as they are not equal.
* ETH address is set to zero address.
*
* @remarks Only works for tokens bridged on default ZKsync Era bridges.
*
* @param client - Client to use
* @param parameters - {@link GetL1TokenAddressParameters}
* @returns The L1 token address equivalent for a L2 token address.
*
*
* @example
* import { createPublicClient, http } from 'viem'
* import { zksync } from 'viem/chains'
*
* const client = createPublicClient({
* chain: zksync,
* transport: http(),
* })
*
* const address = await getL1TokenAddress(client, {token: '0x...'});
*/
export async function getL1TokenAddress(client, parameters) {
const { token } = parameters;
if (isAddressEqual(token, legacyEthAddress))
return legacyEthAddress;
const bridgeAddress = (await getDefaultBridgeAddresses(client)).sharedL2;
return await readContract(client, {
address: bridgeAddress,
abi: l2SharedBridgeAbi,
functionName: 'l1TokenAddress',
args: [token],
});
}
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