noob-ethereum/dist/junk/testing/rlp-block-noob.js

A simple Ethereum library

"use strict";
var __importDefault = (this && this.__importDefault) || function (mod) {
    return (mod && mod.__esModule) ? mod : { "default": mod };
};
Object.defineProperty(exports, "__esModule", { value: true });
exports.verifyBlockHeader = exports.calculateBlockHeader = void 0;
// @ts-nocheck
const constants_1 = require("../../constants");
const rlp_1 = require("../../lib/rlp/rlp");
const keccak_1 = __importDefault(require("keccak"));
function prepareBlockTuple(block) {
    const blockNumber = parseInt(block.number, 16);
    const tuple = [
        block.parentHash,
        block.sha3Uncles,
        block.miner,
        block.stateRoot,
        block.transactionsRoot,
        block.receiptsRoot,
        block.logsBloom,
        block.difficulty,
        block.number,
        block.gasLimit,
        block.gasUsed,
        block.timestamp,
        block.extraData,
        block.mixHash,
        block.nonce,
    ];
    // If a block after London Hardfork, add base fee to block tuple prior to encoding
    if (blockNumber >= constants_1.LONDON_HARDFORK_BLOCK)
        tuple.push(block.baseFeePerGas);
    return tuple;
}
function calculateBlockHeader(block) {
    const tuple = prepareBlockTuple(block);
    const encoded = Buffer.from((0, rlp_1.encode)(tuple));
    const calculated = (0, keccak_1.default)('keccak256').update(encoded).digest('hex');
    return '0x' + calculated;
}
exports.calculateBlockHeader = calculateBlockHeader;
function verifyBlockHeader(block) {
    const expected = block.hash;
    const calculated = calculateBlockHeader(block);
    return expected === calculated;
}
exports.verifyBlockHeader = verifyBlockHeader;
const _12964874_json_1 = __importDefault(require("../../seeder/blocks/legacy/12964874.json"));
console.log('calculated block header:', calculateBlockHeader(_12964874_json_1.default));
console.log('is a valid block header:', verifyBlockHeader(_12964874_json_1.default));
const _15122367_json_1 = __importDefault(require("../../seeder/blocks/1559/15122367.json"));
console.log('calculated block header:', calculateBlockHeader(_15122367_json_1.default));
console.log('is a valid block header:', verifyBlockHeader(_15122367_json_1.default));