metamask/web3-provider-engine

Higher-order functions and common patterns for asynchronous code

deep cloning of objects and arrays

deterministic JSON.stringify() with custom sorting to get deterministic hashes from stringified results

Node.js Streams, a user-land copy of the stream library from Node.js

Simple to use, blazing fast and thoroughly tested websocket client and server for Node.js

extend like a boss

Babel command line.

Babel compiler core.

A Babel preset for each environment.

Babel browserify transform

browser-side require() the node way

A library and cli to create a local blockchain for fast Ethereum development.

tap-producing test harness for node and browsers

Implementation of the various Ethereum Transaction Types

Cypress's fork of a simplified HTTP request client.

An Ethereum statemanager implementation

Provides Block serialization and help functions

An Ethereum VM implementation

A collection of utility functions for Ethereum

[json-rpc-engine](https://github.com/MetaMask/json-rpc-engine) middleware implementing ethereum filter methods. Backed by an [eth-block-tracker](https://github.com/MetaMask/eth-block-tracker) and web3 provider interface (`web3.currentProvider`).

json-rpc-engine middleware for Infura's endpoints

Ethereum-related json-rpc-engine middleware.

A few useful functions for signing ethereum data

Ethereum RPC and Provider errors

Fibonacci and exponential backoffs.

A block tracker for the Ethereum blockchain. Keeps track of the latest block.

semaphore for node

small xhr abstraction

A light-weight, highly optimised JS utility for Ethereum

All the cryptographic primitives used in Ethereum