@unruggable/gateways
Version:
Trustless Ethereum Multichain CCIP-Read Gateway
45 lines (44 loc) • 1.7 kB
JavaScript
import { encodeRlp } from 'ethers/utils';
// block header:
// https://ethereum.github.io/execution-specs/src/ethereum/cancun/blocks.py.html#ethereum.cancun.blocks.Header:0
// https://github.com/taikoxyz/taiko-geth/blob/30a615b4c3aafd0d395309035d58b86ff53c8eb0/core/types/block.go#L65
// https://github.com/ethereum/go-ethereum/blob/80bdab757dfb0f6d73fb869d834979536fe474e5/core/types/block.go#L75-L109
// pectra: https://eips.ethereum.org/EIPS/eip-7685
// rlp encoding:
// https://github.com/ethereum/ethereum-rlp/blob/master/src/ethereum_rlp/rlp.py
export function encodeRlpUint(x) {
if (x === undefined || x === null)
return;
const s = BigInt(x).toString(16);
return s === '0' ? '0x' : s.length & 1 ? `0x0${s}` : `0x${s}`;
// same as: return hexlify(toBeArray(x));
}
export function encodeRlpOptionalList(v) {
return encodeRlp(v.slice(0, 1 + v.findLastIndex((x) => x)).map((x) => x || '0x'));
}
export function encodeRlpBlock(block) {
return encodeRlpOptionalList([
block.parentHash,
block.sha3Uncles,
block.miner,
block.stateRoot,
block.transactionsRoot,
block.receiptsRoot,
block.logsBloom,
encodeRlpUint(block.difficulty),
encodeRlpUint(block.number),
encodeRlpUint(block.gasLimit),
encodeRlpUint(block.gasUsed),
encodeRlpUint(block.timestamp),
block.extraData,
block.mixHash,
block.nonce,
// optional
encodeRlpUint(block.baseFeePerGas),
block.withdrawalsRoot,
encodeRlpUint(block.blobGasUsed),
encodeRlpUint(block.excessBlobGas),
block.parentBeaconBlockRoot,
block.requestsHash,
]);
}