SolidState Contracts

SolidState contract library. Part of the SolidState Solidity monorepo.

Installation

Install the package as a development dependency:

npm install --save-dev @solidstate/contracts
# or
yarn add --dev @solidstate/contracts

Layout

SolidState maintains "recommended" implementations of various EIP standards, which are suitable for most users. Internally, these implementations may be composed of several modules, which themselves may be composed of several visibility layers. Layers are subject to a consistent naming convention so that their purposes may be easily identified.

For example, the ERC20 contract contains ERC20Base, ERC20Extended and ERC20Metadata modules. The ERC20Base module is composed of the external functions specified by the IERC20 interface, ERC20BaseInternal, and ERC20BaseStorage.

An overview of the uses of each visibility layer is as follows:

layer	contents	description	example
external	external and public functions	set of functions that constitute a module's external interface; useful for most common situations	ERC20Base.sol
internal	internal functions, events	set of internal functions that define a module's core logic; may be called by inheriting contracts	ERC20BaseInternal.sol
storage	internal library functions, structs	library for accessing and modifying storage; useful when sharing access to storage between implementation contracts that will be deployed separately (such as in the "diamond" proxy architecture)	ERC20BaseStorage.sol