viem
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122 lines • 4.53 kB
JavaScript
import { InvalidLegacyVError, } from '../../errors/transaction.js';
import { concatHex } from '../data/concat.js';
import { trim } from '../data/trim.js';
import { toHex } from '../encoding/toHex.js';
import { toRlp } from '../encoding/toRlp.js';
import { assertTransactionEIP1559, assertTransactionEIP2930, assertTransactionLegacy, } from './assertTransaction.js';
import { getTransactionType, } from './getTransactionType.js';
import { serializeAccessList, } from './serializeAccessList.js';
export function serializeTransaction(transaction, signature) {
const type = getTransactionType(transaction);
if (type === 'eip1559')
return serializeTransactionEIP1559(transaction, signature);
if (type === 'eip2930')
return serializeTransactionEIP2930(transaction, signature);
return serializeTransactionLegacy(transaction, signature);
}
function serializeTransactionEIP1559(transaction, signature) {
const { chainId, gas, nonce, to, value, maxFeePerGas, maxPriorityFeePerGas, accessList, data, } = transaction;
assertTransactionEIP1559(transaction);
const serializedAccessList = serializeAccessList(accessList);
const serializedTransaction = [
toHex(chainId),
nonce ? toHex(nonce) : '0x',
maxPriorityFeePerGas ? toHex(maxPriorityFeePerGas) : '0x',
maxFeePerGas ? toHex(maxFeePerGas) : '0x',
gas ? toHex(gas) : '0x',
to ?? '0x',
value ? toHex(value) : '0x',
data ?? '0x',
serializedAccessList,
];
if (signature) {
const yParity = (() => {
if (signature.v === 0n)
return '0x';
if (signature.v === 1n)
return toHex(1);
return signature.v === 27n ? '0x' : toHex(1);
})();
serializedTransaction.push(yParity, trim(signature.r), trim(signature.s));
}
return concatHex([
'0x02',
toRlp(serializedTransaction),
]);
}
function serializeTransactionEIP2930(transaction, signature) {
const { chainId, gas, data, nonce, to, value, accessList, gasPrice } = transaction;
assertTransactionEIP2930(transaction);
const serializedAccessList = serializeAccessList(accessList);
const serializedTransaction = [
toHex(chainId),
nonce ? toHex(nonce) : '0x',
gasPrice ? toHex(gasPrice) : '0x',
gas ? toHex(gas) : '0x',
to ?? '0x',
value ? toHex(value) : '0x',
data ?? '0x',
serializedAccessList,
];
if (signature) {
const yParity = (() => {
if (signature.v === 0n)
return '0x';
if (signature.v === 1n)
return toHex(1);
return signature.v === 27n ? '0x' : toHex(1);
})();
serializedTransaction.push(yParity, trim(signature.r), trim(signature.s));
}
return concatHex([
'0x01',
toRlp(serializedTransaction),
]);
}
function serializeTransactionLegacy(transaction, signature) {
const { chainId = 0, gas, data, nonce, to, value, gasPrice } = transaction;
assertTransactionLegacy(transaction);
let serializedTransaction = [
nonce ? toHex(nonce) : '0x',
gasPrice ? toHex(gasPrice) : '0x',
gas ? toHex(gas) : '0x',
to ?? '0x',
value ? toHex(value) : '0x',
data ?? '0x',
];
if (signature) {
const v = (() => {
// EIP-155 (explicit chainId)
if (chainId > 0)
return BigInt(chainId * 2) + BigInt(35n + signature.v - 27n);
// EIP-155 (inferred chainId)
if (signature.v >= 35n) {
const inferredChainId = (signature.v - 35n) / 2n;
if (inferredChainId > 0)
return signature.v;
return 27n + (signature.v === 35n ? 0n : 1n);
}
// Pre-EIP-155 (no chainId)
const v = 27n + (signature.v === 27n ? 0n : 1n);
if (signature.v !== v)
throw new InvalidLegacyVError({ v: signature.v });
return v;
})();
serializedTransaction = [
...serializedTransaction,
toHex(v),
signature.r,
signature.s,
];
}
else if (chainId > 0) {
serializedTransaction = [
...serializedTransaction,
toHex(chainId),
'0x',
'0x',
];
}
return toRlp(serializedTransaction);
}
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