constants.ts

import { secp256k1 } from '@noble/curves/secp256k1.js'
import { sha256 } from '@noble/hashes/sha2.js'

import { hexToBytes } from './bytes.ts'

/**
 * 2^64-1
 */
export const MAX_UINT64 = BigInt('0xffffffffffffffff')

/**
 * The max integer that the evm can handle (2^256-1)
 */
export const MAX_INTEGER = BigInt(
  '0xffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffff',
)

/**
 * The max integer that the evm can handle (2^256-1) as a bigint
 * 2^256-1 equals to 340282366920938463463374607431768211455
 * We use literal value instead of calculated value for compatibility issue.
 */
export const MAX_INTEGER_BIGINT = BigInt(
  '115792089237316195423570985008687907853269984665640564039457584007913129639935',
)

/** Order of the secp256k1 curve. */
export const SECP256K1_ORDER = secp256k1.Point.CURVE().n
/** Half of the secp256k1 curve order (used in signature malleability checks). */
export const SECP256K1_ORDER_DIV_2 = SECP256K1_ORDER / BigInt(2)

/**
 * 2^256
 */
export const TWO_POW256 = BigInt(
  '0x10000000000000000000000000000000000000000000000000000000000000000',
)

/**
 * Keccak-256 hash of null
 */
export const KECCAK256_NULL_S = '0xc5d2460186f7233c927e7db2dcc703c0e500b653ca82273b7bfad8045d85a470'

/**
 * Keccak-256 hash of null
 */
export const KECCAK256_NULL = hexToBytes(KECCAK256_NULL_S)

/**
 * Keccak-256 of an RLP of an empty array
 */
export const KECCAK256_RLP_ARRAY_S =
  '0x1dcc4de8dec75d7aab85b567b6ccd41ad312451b948a7413f0a142fd40d49347'

/**
 * Keccak-256 of an RLP of an empty array
 */
export const KECCAK256_RLP_ARRAY = hexToBytes(KECCAK256_RLP_ARRAY_S)

/**
 * Keccak-256 hash of the RLP of null
 */
export const KECCAK256_RLP_S = '0x56e81f171bcc55a6ff8345e692c0f86e5b48e01b996cadc001622fb5e363b421'

/**
 * Keccak-256 hash of the RLP of null
 */
export const KECCAK256_RLP = hexToBytes(KECCAK256_RLP_S)

/** SHA-256 hash of the empty byte string. */
export const SHA256_NULL = sha256(new Uint8Array())

/**
 *  RLP encoded empty string
 */
export const RLP_EMPTY_STRING = Uint8Array.from([0x80])

/** Maximum withdrawals allowed per execution payload (EIP-4895). */
export const MAX_WITHDRAWALS_PER_PAYLOAD = 16

/** Unpadded hex address of the RIPEMD160 precompile. */
export const RIPEMD160_ADDRESS_STRING = '0000000000000000000000000000000000000003'

/**
 * System address used by various EIPs (EIP-2935, EIP-7002, EIP-7251, EIP-7708, BAL).
 * Single canonical definition to avoid duplication across packages.
 */
export const SYSTEM_ADDRESS = '0xfffffffffffffffffffffffffffffffffffffffe'
/** 20-byte encoding of {@link SYSTEM_ADDRESS}. */
export const SYSTEM_ADDRESS_BYTES = hexToBytes(SYSTEM_ADDRESS)

/**
 * EIP-7934: RLP Execution Block Size Limit constants
 * Maximum RLP-encoded block size to 10 MiB, with a 2 MiB margin for beacon block sizes
 */
export const MAX_BLOCK_SIZE = 10_485_760 // 10 MiB
/** Beacon block size margin reserved under EIP-7934. */
export const SAFETY_MARGIN = 2_097_152 // 2 MiB
/** Maximum RLP-encoded execution block size (EIP-7934). */
export const MAX_RLP_BLOCK_SIZE = MAX_BLOCK_SIZE - SAFETY_MARGIN // 8 MiB

/**
 * BigInt constants
 */

export const BIGINT_NEG1 = BigInt(-1)

/** BigInt literal for 0. */
export const BIGINT_0 = BigInt(0)
/** BigInt literal for 1. */
export const BIGINT_1 = BigInt(1)
/** BigInt literal for 2. */
export const BIGINT_2 = BigInt(2)
/** BigInt literal for 3. */
export const BIGINT_3 = BigInt(3)
/** BigInt literal for 7. */
export const BIGINT_7 = BigInt(7)
/** BigInt literal for 8. */
export const BIGINT_8 = BigInt(8)

/** BigInt literal for 27. */
export const BIGINT_27 = BigInt(27)
/** BigInt literal for 28. */
export const BIGINT_28 = BigInt(28)
/** BigInt literal for 31. */
export const BIGINT_31 = BigInt(31)
/** BigInt literal for 32. */
export const BIGINT_32 = BigInt(32)
/** BigInt literal for 64. */
export const BIGINT_64 = BigInt(64)

/** BigInt literal for 128. */
export const BIGINT_128 = BigInt(128)
/** BigInt literal for 255. */
export const BIGINT_255 = BigInt(255)
/** BigInt literal for 256. */
export const BIGINT_256 = BigInt(256)

/** BigInt literal for 96. */
export const BIGINT_96 = BigInt(96)
/** BigInt literal for 100. */
export const BIGINT_100 = BigInt(100)
/** BigInt literal for 160. */
export const BIGINT_160 = BigInt(160)
/** BigInt literal for 224. */
export const BIGINT_224 = BigInt(224)
/** BigInt literal for 2^96. */
export const BIGINT_2EXP96 = BigInt(79228162514264337593543950336)
/** BigInt literal for 2^160. */
export const BIGINT_2EXP160 = BigInt(1461501637330902918203684832716283019655932542976)
/** BigInt literal for 2^224. */
export const BIGINT_2EXP224 =
  BigInt(26959946667150639794667015087019630673637144422540572481103610249216)
/** BigInt literal for 2^256. */
export const BIGINT_2EXP256 = BIGINT_2 ** BIGINT_256