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@holgerd77 holgerd77 released this 25 Nov 09:09
· 4860 commits to master since this release
@ethereumjs/vm@5.0.0
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New Package Name

Attention! This new version is part of a series of EthereumJS releases all moving to a new scoped package name format. In this case the library is renamed as follows:

  • ethereumjs-vm -> @ethereumjs/vm

Please update your library references accordingly or install with:

npm i @ethereumjs/vm

Support for all current Hardforks / HF API Changes

This is the first release of the VM which supports all hardforks currently applied on mainnet starting with the support of the Frontier HF rules all along up to MuirGlacier. 🎉

The following HFs have been added:

  • Spurious Dragon, PR #791
  • Tangerine Whistle, PR #807
  • DAO, PR #843
  • Homestead, PR #815
  • Frontier, PR #828

A VM with the specific HF rules (on the chain provided) can be instantiated by passing in a Common instance:

import VM from '@ethereumjs/vm'
import Common from '@ethereumjs/common'

const common = new Common({ chain: 'mainnet', hardfork: 'spuriousDragon' })
const vm = new VM({ common })

Breaking: The default HF from the VM has been updated from petersburg to istanbul. The HF setting is now automatically taken from the HF set for Common.DEAULT_HARDFORK, see PR #906.

Breaking: Please note that the options to directly pass in chain and hardfork strings have been removed to simplify the API. Providing a Common instance is now the only way to change the chain setup, see PR #863

Berlin HF Support / HF-independent EIPs

This releases adds support for subroutines (EIP-2315) which gets activated under the berlin HF setting which can now be used as a hardfork instantiation option, see PR #754.

Attention! Berlin HF support is still considered experimental and implementations can change on non-major VM releases!

Support for BLS12-381 precompiles (EIP-2537) is added as an independent EIP implementation - see PR #785 - since there is still an ongoing discussion on taking this EIP in for Berlin or using a more generalized approach on curve computation with the Ethereum EVM (evm384 by the eWASM team).

Another new EIP added is the EIP-2929 with gas cost increases for state access opcodes, see PR #889.

These integrations come along with an API addition to the VM to support the activation of specific EIPs, see PR #856, PR #869 and PR #872.

This API can be used as follows:

import Common from '@ethereumjs/common'
import VM from '@ethereumjs/vm'

const common = new Common({ chain: 'mainnet', eips: [2537] })
const vm = new VM({ common })

API Change: New Major Library Versions

The following EthereumJS libraries which are used within the VM internally and can be passed in on instantiation have been updated to new major versions.

  • merkle-patricia-tree v3 (VM option state) -> merkle-patricia-tree v4, PR #787
  • ethereumjs-blockchain v4-> @ethereumjs/blockchain v5, PR #833
  • ethereumjs-common v1 -> @ethereumjs/common v2

Breaking: If you pass in instances of these libraries to the VM please make sure to update these library versions as stated. Please also take a note on the package name changes!

All these libraries are now written in TypeScript and use promises instead of callbacks for accessing their APIs.

New StateManager Interface / StateManager API Changes

There is now a new TypeScript interface for the StateManager, see PR #763. If you are
using a custom StateManager you can use this interface to get better assurance that you are using a StateManager which conforms with the current StateManager API and will run in the VM without problems.

The integration of this new interface is highly encouraged since this release also comes with StateManager API changes. Usage of the old
ethereumjs-account package (this package will be retired) has been replaced by the new
Account class from the ethereumjs-util package. This affects all Account related StateManager methods, see PR #911.

The Util package also introduces a new Address class. This class replaces all current Buffer inputs on StateManager methods representing an address.

Dual ES5 and ES2017 Builds

We significantly updated our internal tool and CI setup along the work on PR #913 with an update to ESLint from TSLint for code linting and formatting and the introduction of a new build setup.

Packages now target ES2017 for Node.js builds (the main entrypoint from package.json) and introduce a separate ES5 build distributed along using the browser directive as an entrypoint, see PR #921. This will result in performance benefits for Node.js consumers, see here for a releated discussion.

Other Changes

Changes and Refactoring

  • Group opcodes based upon hardfork, PR #798
  • Split opcodes logic into codes, fns, and utils files, PR #896
  • Group precompiles based upon hardfork, PR #783
  • Breaking: the step event now emits an ethereumjs-util Account object instead of an ethereumjs-account
    (package retired) object
  • Breaking: NewContractEvent now emits an address of type Address (see ethereumjs-util) instead of a Buffer, PR #919
  • Breaking: EVMResult now returns a createdAddress of type Address (see ethereumjs-util) instead of a Buffer, PR #919
  • Breaking: RunTxResult now returns a createdAddress of type Address (see ethereumjs-util) instead of a Buffer, PR #919
  • Breaking: RunCallOpts now expects origin, caller and to inputs to be of type Address (see ethereumjs-util) instead of a Buffer, PR #919
  • Breaking: RunCodeOpts now expects origin, caller and address inputs to be of type Address (see ethereumjs-util) instead of a Buffer, PR #919
  • Visibility cleanup (Renaming and/or code docs additions) for class members not being part of the API, PR #925
  • Make memory.ts use Buffers instead of Arrays, PR #850
  • Use Map for OpcodeList and opcode handlers, PR #852
  • Compare buffers directly, PR #851
  • Moved gas base fees from VM to Common, PR #806
  • Return precompiles on getPrecompile() based on hardfork, PR #783
  • Removed async dependency, PR #779
  • Updated ethereumjs-util to v7, PR #748

CI and Test Improvements

  • New benchmarking tool for the VM, CI integration on GitHub actions, PR #794 and PR #830
  • Various updates, fixes and refactoring work on the test runner, PR #752 and PR #849
  • Integrated ethereumjs-testing code logic into VM for more flexible future test load optimizations, PR #808
  • Transition VM tests to TypeScript, PR #881 and PR #882
  • On-demand state and blockchain test runs for all hardforks triggered by PR label, PR #951
  • Dropped ethereumjs-testing dev dependency, PR #953

Bug Fixes

  • Fix activatePrecompiles, PR #797
  • Strip zeros when putting contract storage in StateManager, PR #880
  • Two bug fixes along istanbul SSTORE gas calculation, PR #870
  • Security fixes by mcl-wasm package dependency update, PR #955
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