ethereumjs-util 3.0.0

v3.0.0 - Stack & Memory Refactoring, ES6 Classes

on Node.js Yarn

This release comes with a modernized ES6-class structured code base, some
significant local refactoring work regarding how Stack and Memory
are organized within the VM and it finalizes a first round of module structuring
now having separate folders for bloom, evm and state related code. The
release also removes some rarely used parts of the API (hookedVM, VM.deps).

All this is to a large extend preparatory work for a v4.0.0 release which will
follow in the next months with TypeScript support and more system-wide
refactoring work leading to a more modular and expandable VM and providing the
ground for future eWASM integration. If you are interested in the release
process and want to take part in the refactoring discussion see the associated
issue #455.

VM Refactoring/Breaking Changes

• New Memory class for evm memory manipulation, PR #442
• Refactored Stack manipulation in evm, PR #460
• Dropped createHookedVm (BREAKING), being made obsolete by the new StateManager API, PR #451
• Dropped VM.deps attribute (please require dependencies yourself if you used this), PR #478
• Removed fakeBlockchain class and associated tests, PR #466
• The petersburg hardfork rules are now run as default (before: byzantium), PR #485

Modularization

• Renamed vm module to evm, move precompiles to evm module, PR #481
• Moved stateManager, storageReader and cache to state module, PR #443
• Replaced static VM logTable with dynamic inline version in EXP opcode, PR #450

Code Modernization/ES6

• Converted VM to ES6 class, PR #478
• Migrated stateManager and storageReader to ES6 class syntax, PR #452

Bug Fixes

• Fixed a bug where stateManager.setStateRoot() didn't clear the _storageTries cache, PR #445
• Fixed longer output than return length in CALL opcode, PR #454
• Use BN.toArrayLike() instead of BN.toBuffer() (browser compatibility), PR #458
• Fixed tx value overflow 256 bits, PR #471

Maintenance/Optimization

• Use BN reduction context in MODEXP precompile, PR #463

Documentation

• Fixed API doc types for Bloom filter methods, PR #439

Testing

• New Karma browser testing for the API tests, PRs #461, PR #468
• Removed unused parts and tests within the test setup, PR #437
• Fixed a bug using --json trace flag in the tests, PR #438
• Complete switch to Petersburg on tests, fix coverage, PR #448
• Added test for StateManager.dumpStorage(), PR #462
• Fixed ecmul_0-3_5616_28000_96 (by test setup adoption), PR #473