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Changelog

All notable changes to this project will be documented in this file.

The format is based on Keep a Changelog (modification: no type change headlines) and this project adheres to Semantic Versioning.

1.5.0 - 2019-12-10

Support for the MuirGlacier HF (EIP-2387) scheduled for January 2020 delaying the difficulty bomb.

Changes:

  • Implemented EIP-2384 Difficulty Bomb Delay, PR #75
  • Consistent genesis account balance format, converted from decimal to hex where necessary, PR #73

1.4.0 - 2019-11-05

First release with full Istanbul support regarding parameter introductions/updates and HF block numbers set for supported chains.

Relevant PRs:

  • Added Istanbul block numbers for mainnet, goerli and rinkeby, PR #68
  • Added Petersburg and Constantinople fork blocks to rinkeby, PR #71
  • Added EIP-2200 (rebalance net-metered SSTORE gas costs) parameters for Istanbul, PR #65

Other noteworthy changes:

  • Adding forks (including Istanbul) for kovan, PR #70
  • Fixed kovan genesis state, PR #66

1.3.2 - 2019-09-04

Istanbul Updates:

  • Added gas parameters for EIP-2200 (rebalanced net-metered SSTORE gas costs), PR #65
  • Renamed hardfork blake2bRound (-> blake2Round) parameter, PR #63

Other Changes:

  • Fixed Kovan genesis state, PR #66

1.3.1 - 2019-08-08

Added missing Istanbul gas costs for:

  • ChainID opcode (EIP-1344, as base param in hardforks/chainstart.json)
  • Blake2b precompile (EIP-2129/152)
  • Calldata gas cost reduction (EIP-2028)

See PR #58.

1.3.0 - 2019-06-18

  • Add a static factory method Custom.forCustomChain to make working with custom/private chains easier.

1.2.1 - 2019-06-03

  • Added Istanbul HF candidate EIP-1108 (DRAFT) updated alt_bn128 precompile gas costs (see hardforks/istanbul.json)

1.2.0 - 2019-05-27

DRAFT Istanbul Hardfork Support

Draft support for the upcoming Istanbul hardfork planned for October 2019, use istanbul as constructor hardfork parameter to activate. Parameters relevant to new EIPs accepted for the HF will be added along subsequent 1.2.x releases, the finalized HF version will be released along a subsequent 1.x.0 release (likely 1.3.0).

See new hardforks/istanbul.json file as well as PR #51.

1.1.0 - 2019-02-04

Petersburg Hardfork Support

This release now supports the new Petersburg (aka constantinopleFix) HF removing support for EIP 1283. Petersburg is conceptualized within the library as a separate delta-containing HF, only removing EIP 1283 support and containing nothing else. It should therefore always be applied together with the Constantinople HF, either by using the same block number to update on both (mainnet scenario) or applying subsequently on subsequent block numbers (ropsten scenario).

HF related changes (from PR #44):

  • New hardforks/petersburg.json HF file
  • constantinople and petersburg block numbers for ropsten and mainnet
  • Updated tests, new petersburg related tests

Launched/Final Goerli Configuration Support

The release now supports the final Goerli cross-client testnet configuration.

Goerli related changes (from PR #48):

  • Updated chains/goerli.json configuration file (chainId -> 5, networkId -> 5, genesis parameters)
  • HF block numbers up to petersburg hardfork
  • Updated bootstrap nodes
  • Updated genesisStates/goerli.json genesis state
  • Test updates

Other Changes

  • Fixed a bug in hardforkGteHardfork() where non-active hardforks were considered equal to chainstart when onlyActive is passed, see PR #44
  • Use CLI scripts from ethereumjs-config in package.json, PR #43

1.0.0 - 2019-01-23

First TypeScript based release of the library (for details see PR #38), so release coming with type declaration files and additional type safety! 😄

Breaking Changes

Library Import

TypeScript handles ES6 transpilation a bit differently (at the end: cleaner) than babel so require syntax of the library slightly changes to:

const Common = require('ethereumjs-common').default

Genesis State Import/Usage

Import path and usage API of genesis state has changed, see also the docs on this, PR #39:

const mainnetGenesisState = require('ethereumjs-common/dist/genesisStates/mainnet')

Or by accessing dynamically:

const genesisStates = require('ethereumjs-common/dist/genesisStates')
const mainnetGenesisState = genesisStates.genesisStateByName('mainnet')
const mainnetGenesisState = genesisStates.genesisStateById(1) // alternative via network Id

Removed hybridCasper (draft) hardfork

Not likely that anyone has used this, but just in case: The once anticipated hybridCasper (draft) hardfork has been removed from the list of hardforks, see PR #37

0.6.1 - 2018-11-28

  • Experimental support for the Goerli cross-client PoA testnet (chains/goerli.json), see PR #31
  • Unified hex-prefixing (so always prefixing with 0x) of account addresses in genesis files (fixes an issue with state root computation on other libraries), see PR #32

0.6.0 - 2018-10-11

Parameter support for the Constantinople hardfork (see hardforks/constantinople.json):

  • Added SSTORE gas/refund prices (EIP-1283), PR #27
  • Added Block Reward Adjustment (EIP-1234), PR #26

0.5.0 - 2018-08-27

  • Introduces support for private chains by allowing to pass a custom dictionary as the chain parameter in the constructor or the setChain() method as an alternative to just passing one of the predefined chain String names (e.g. mainnet, ropsten), PR #24

0.4.1 - 2018-08-13

  • Added timestamp field to genesis definitions in chain files, set for Rinkeby and null for other chains, PR #21
  • Updated Ropsten bootstrap nodes, PR #20

0.4.0 - 2018-06-20

  • Remove leftover ...Gas postfix for some gas prices (e.g. ecAddGas -> ecAdd) to be consistent with overall gas price naming

0.3.1 - 2018-05-28

  • Added two alias functions activeOnBlock() and gteHardfork() when hardfork is set for convenience, PR #15
  • Added option to dynamically choose genesis state (see README), PR #15

0.3.0 - 2018-05-25

  • Allow functions like hardforkIsActiveOnBlock() - where hardfork is provided as param - also to be run on hardfork set for greater flexibility/comfort, PR #13
  • New hardforkGteHardfork() method for HF order comparisons, PR #13

0.2.0 - 2018-05-14

  • New optional initialization parameter allowedHardforks, this allows for cleaner client library implementations by preventing undefined behaviour, PR #10
  • Added activeHardfork() function to get latest active HF for chain or block, PR #11

0.1.1 - 2018-05-09

  • Remove dynamic require to prevent browserify issue, PR #8

0.1.0 - 2018-05-09

  • Initial version, this library succeeds the ethereum/common library, being more future-proof through a better structured design

Features:

  • Easy chain-/HF-based parameter access
  • No parameter changes on library updates (c.param('gasPrices', 'ecAddGas', 'byzantium') will always return the same value)
  • Ease experimentation/research by allowing to include future HF parameters (already included as draft: constantinople and hybridCasper) without breaking current installations
  • Improved structure for parameter access (mainly through topics like gasPrices, pow, sharding) for better readability/developer overview
  • See README and API Docs for a more in-depth feature overview and usage instructions