markodayan

name: bun-types
jobs:
  build:
    name: build-app
    runs-on: ubuntu-latest
    steps:
      - name: Checkout repo
        uses: actions/checkout@v3
      - name: Install bun
        uses: oven-sh/setup-bun@v1

markodayan

//SPDX-License-Identifier: MIT
// https://community.optimism.io/docs/developers/bedrock/differences/#l1-contracts
pragma solidity 0.8.10;

import { Ownable } from "@openzeppelin/contracts/access/Ownable.sol";

/**
 * @title L2OutputOracle
 * @notice The L2 state is committed to in this contract
 * The payable keyword is used on appendL2Output to save gas on the msg.value check.

markodayan

function verifyBlockHeader(block: IRawBlock): boolean {
  const expected = block.hash;
  const calculated = calculateBlockHeader(block);

  return expected === calculated;
}

markodayan

import createKeccakHash from 'keccak';

function calculateBlockHeader(block: IRawBlock): string {
  const tuple = prepareBlockTuple(block);
  const encoded = Buffer.from(encode(tuple));
  const calculated = createKeccakHash('keccak256').update(encoded).digest('hex');
  return '0x' + calculated;
}

markodayan

// Legacy Block (Block Number = 12 964 874)
[
  '0x4b0a0331740041e0a110fb20295878a56e3ff9c52b4fabddb3f9ebb56ed664e0',
  '0x0eab1b145a087ad364aed20c2a313347afb5eb69ddaef3503f4d5b2c1be7c6c7',
  '0xea674fdde714fd979de3edf0f56aa9716b898ec8',
  '0xb51018a3b2723021f90de0c0461ea172c4d0477ccdf333d0bc0dad11b689e34c',
  '0x9b66b32f7d4cf7f5a80614e27ae874879c04136e0a9400c1b59e0cff13f71bec',
  '0x2922269aa89c5df859a38e168dbdce0e07a7ccb651f9ffcb6c6b1e74eaf7e069',
  '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',
  '0x1b315bd824e5e8',

markodayan

function prepareBlockTuple(block: IRawBlock): ILegacyBlockTuple | IPost1559Tuple {
  const blockNumber = parseInt(block.number, 16);

  const tuple = [
    block.parentHash,
    block.sha3Uncles,
    block.miner,
    block.stateRoot,
    block.transactionsRoot,
    block.receiptsRoot,

markodayan

{
  "baseFeePerGas":"0x2be5fed13e",
  "difficulty":"0x281030ebe089b5",
  "extraData":"0x6575726f70652d63656e7472616c322d676e7637",
  "gasLimit":"0x1c9c380",
  "gasUsed":"0x695d2c",
  "hash":"0x01176f73081379cfd9d8bcee1c7e822b66f4d71160900d7f963619c42716cd83",
  "logsBloom":"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",
  "miner":"0xea674fdde714fd979de3edf0f56aa9716b898ec8",
  "mixHash":"0x151624c46d33ac76f36d3e365487ab78f0a9847f6b16b0775e36a9c9dbb3f520",

markodayan

{
	"difficulty":"0x1b315bd824e5e8",
	"extraData":"0x65746865726d696e652d75732d7765737431",
	"gasLimit":"0xe4e1b2",
	"gasUsed":"0xe4dd4b",
	"hash":"0x14687ccc4adfd2b0f0d530fc8f8c64dd29ac301ddea26e99087e11d0eae4f575",
	"logsBloom":"0x2361a9b76107883d7089e585a3a1422374b21375b8168423507d70b2bccab1a10c5771c82882574255d25bb3c04747e9971ca844ed667b2407dbfb207a24ac5940985ec6f00a0b2c19baaaff217033b63ba7fc2467e64f816ace1764d9e90dd97f5098d2d383ae4951c21952e837eac70290d769b61b275e0a1f75d030382a06e890ef782655601487fc124d274a7626195724f7275409589d2f00e50a5b2914c3db2b5bb1de73284217e0d2f23fa4999a52fa4611e0a005292abd3e5b5d09ff13d12537398412f03416d82181fbb1939965568e078f2f1e65481b8eed3aea90f8f37e99c12fa02500ac1721c2409770d5b52440ab43c050277a2b93357970a7",
	"miner":"0xea674fdde714fd979de3edf0f56aa9716b898ec8",
	"mixHash":"0x7ae3558891959354b482938e5a61b1d7e371636e5a718137e16753f595531f6a",
	"nonce":"0xb81e11f2cb22375e",

markodayan

/* If string supplied is prefixed with '0x' remove it and return the new string */
function stripHexPrefix(input: string): string {
  if (input.startsWith('0x')) {
    input = input.slice(2);
  }

  return input;
}

/* Convert a hexadecimal string to an array of hexadecimal byte values (in preparation of inserting into a byte array) */

markodayan

type Input = string | number | bigint | Uint8Array | Array<Input> | null | undefined | any;

function encode(input: Input): Uint8Array {
  /* (1) Non-value input */
  if (input === '' || input === false || input === null) {
    const value = parseInt('0x80', 16);
    return Uint8Array.from([value]);
  }

  /* (2) Empty list input */