viem
Version:
58 lines • 2.52 kB
JavaScript
;
Object.defineProperty(exports, "__esModule", { value: true });
exports.buildProveWithdrawal = buildProveWithdrawal;
exports.maybeAddProofNode = maybeAddProofNode;
const getBlock_js_1 = require("../../actions/public/getBlock.js");
const getProof_js_1 = require("../../actions/public/getProof.js");
const fromRlp_js_1 = require("../../utils/encoding/fromRlp.js");
const toRlp_js_1 = require("../../utils/encoding/toRlp.js");
const keccak256_js_1 = require("../../utils/hash/keccak256.js");
const contracts_js_1 = require("../contracts.js");
const getWithdrawalHashStorageSlot_js_1 = require("../utils/getWithdrawalHashStorageSlot.js");
const outputRootProofVersion = '0x0000000000000000000000000000000000000000000000000000000000000000';
async function buildProveWithdrawal(client, args) {
const { account, chain = client.chain, game, output, withdrawal } = args;
const { withdrawalHash } = withdrawal;
const { l2BlockNumber } = game ?? output;
const slot = (0, getWithdrawalHashStorageSlot_js_1.getWithdrawalHashStorageSlot)({ withdrawalHash });
const [proof, block] = await Promise.all([
(0, getProof_js_1.getProof)(client, {
address: contracts_js_1.contracts.l2ToL1MessagePasser.address,
storageKeys: [slot],
blockNumber: l2BlockNumber,
}),
(0, getBlock_js_1.getBlock)(client, {
blockNumber: l2BlockNumber,
}),
]);
return {
account,
l2OutputIndex: game?.index ?? output?.outputIndex,
outputRootProof: {
latestBlockhash: block.hash,
messagePasserStorageRoot: proof.storageHash,
stateRoot: block.stateRoot,
version: outputRootProofVersion,
},
targetChain: chain,
withdrawalProof: maybeAddProofNode((0, keccak256_js_1.keccak256)(slot), proof.storageProof[0].proof),
withdrawal,
};
}
function maybeAddProofNode(key, proof) {
const lastProofRlp = proof[proof.length - 1];
const lastProof = (0, fromRlp_js_1.fromRlp)(lastProofRlp);
if (lastProof.length !== 17)
return proof;
const modifiedProof = [...proof];
for (const item of lastProof) {
if (!Array.isArray(item))
continue;
const suffix = item[0].slice(3);
if (typeof suffix !== 'string' || !key.endsWith(suffix))
continue;
modifiedProof.push((0, toRlp_js_1.toRlp)(item));
}
return modifiedProof;
}
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