evertonfraga/ethereumjs-vm

The Ethereum VM implemented in Javascript

EthereumJS Monorepo

This was originally the EthereumJS VM repository. On Q1 2020 we brought some of its building blocks together to simplify development. Below you can find the packages included in this repository.

🚧 Please note that the master branch is updated on a daily basis, and to inspect code related to a specific package version, refer to the tags.

package	npm	issues	tests	coverage
@ethereumjs/block
@ethereumjs/blockchain
@ethereumjs/common
@ethereumjs/ethash
@ethereumjs/tx
@ethereumjs/vm

Coverage report

Detailed version can be seen on Codecov.io

Package dependency relationship

Development quick start

This monorepo uses Lerna. It links the local packages together, making development a lot easier.

TLDR: Setup

npm install
npm run build

TLDR: To update dependencies and (re-)link packages

npm run bootstrap
npm run build

Above is the quickest way to set you up. Going down the road, there are two sets of commands: project and package-specific commands. You can find them at ./package.json and ./packages/*/package.json, respectively. Here's a breakdown:

Project scripts — run from repository root

npm install

Adds dependencies listed in the root package. Also, it executes the bootstrap script described below, installing all sub-packages dependencies.

npm run bootstrap

Installs dependencies for all sub-packages, and links them to create an integrated development environment.

npm run build

Builds all monorepo packages by default. If a scope is provided, it will only build that particular package.

Scoped example, that will only build the VM package: npm run build -- --scope @ethereumjs/vm

npm run build:tree -- --scope @ethereumjs/blockchain

Builds all local packages that the provided package depends on (e.g.: @ethereumjs/blockchain), and builds itself.

If no scope is provided, npm run build:tree, will build all sub-packages.

npm run clean

Removes root and packages node_modules directories, and other generated files, like coverage, dist and others. This is useful to run after changing branches, to have a clean slate to work with.

npm run lint and npm run lint:fix

These scripts execute lint and lint:fix respectively, to all monorepo packages. Worth noting that there is a git hook in place that runs npm run lint for every git push. This check can be skipped using git push [command] --no-verify.

Package scripts — run from ./packages/<name>

⚠️ Important: if you run npm install from the package directory, it will remove all links to the local packages, pulling all dependencies from npm. Run npm install from the root only.

There's a set of rather standardized commands you will find in each package of this repository.

npm run build

Uses TypeScript compiler to build source files. The resulting files can be found at packages/<name>/dist.

npm run coverage

Runs whatever is on npm run test script, capturing testing coverage information. By the end, it displays a coverage table. Additional reports can be found at packages/<name>/coverage/.

npm run docs:build

Generates package documentation and saves them to ./packages/<name>/docs.

npm run lint

Checks code style according to the rules defined in ethereumjs-config.

npm run lint:fix

Fixes code style according to the rules. Differently from npm run lint, this command actually writes to files.

npm run test

Runs the package tests.

Note that the VM has several test scopes - refer to packages/vm/package.json for more info.

Going further

As this project is powered by Lerna, you can install it globally to enjoy lots more options. Refer to Lerna docs for additional commands.

• npm install -g lerna
• lerna run
• lerna exec

Cleaning node_modules

Hoisting is enabled so dependencies are moved to the root node_modules. lerna clean does not remove the root node_modules so for convenience you can use the project script npm run clean.

Testing packages locally on other projects

There are some ways you can link this repository packages to other projects before publishing. You can symlink dependencies with npm link <package>, or install packages from the filesystem using npm install <folder>. But they are subject to some externalities and most importantly with how your package manager handles the lifecycle of packages during installs.

Note: Git references do not work with monorepo setups out of the box due to the lack of directory traversal on the syntax. E.g.:

npm install git@github.com:ethereumjs/ethereumjs-vm.git

One way to fetch packages remotely from GitHub before publishing is using gitpkg.now.sh.

But there's a cleaner way to manage your dependencies using Verdaccio.

Install Verdaccio

Verdaccio is an npm registry and proxy that can be of great help to test packages locally. Check out their Getting Started guide.

Installs, hoists dependencies and builds packages

npm install

Publish monorepo packages to Verdaccio

lerna exec "npm publish --registry http://localhost:4873 --ignore-scripts"

Unpublish all monorepo packages from Verdaccio

lerna exec "npm unpublish $LERNA_PACKAGE_NAME --registry http://localhost:4873 --force"

Setup @ethereumjs scope to local Verdaccio server

npm config set @ethereumjs:registry http://localhost:4873

Teardown @ethereumjs scope to local Verdaccio server

npm config delete @ethereumjs:registry

EthereumJS

See our organizational documentation for an introduction to EthereumJS as well as information on current standards and best practices.

If you want to join for work or do improvements on the libraries have a look at our contribution guidelines.

LICENSE

MIT