Proxy upgadable contracts based on openzeppelin-sdk

Usage no npm install needed!

<script type="module">
  import daostackUpgrades from 'https://cdn.skypack.dev/@daostack/upgrades';


OpenZeppelin SDK JavaScript Library (@openzeppelin/upgrades)

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JavaScript library for the OpenZeppelin smart contract platform.

OpenZeppelin SDK is a platform to develop, deploy and operate smart contract projects on Ethereum and every other EVM and eWASM-powered blockchain.

This is the repository for the OpenZeppelin SDK JavaScript library. It is mainly used by the openzeppelin-sdk command-line interface, which is the recommended way to use the OpenZeppelin SDK; but this library can also be used directly to operate projects when a programmatic interface is preferred or more flexibility and lower-level access is required.


First, install Node.js and npm. Then, install the OpenZeppelin SDK JavaScript Library running:

npm install @openzeppelin/upgrades


Suppose there is a contract called MyContract in the file contracts/MyContract.sol, already compiled to build/contracts/MyContract.json, and that there is a development blockchain network running locally in port 9545.

Open a Node.js console:

> const { ZWeb3, Contracts, SimpleProject } = require('@openzeppelin/upgrades')
> // Initialize a web3 provider.
> ZWeb3.initialize("http://localhost:9545")
> // Load the contract.
> const MyContract = Contracts.getFromLocal('MyContract')
> // Instantiate a project.
> myProject = new SimpleProject('MyProject', { from: await ZWeb3.defaultAccount() })
> // Create a proxy for the contract.
> myProject.createProxy(MyContract).then(proxy => myProxy = proxy)
> // Make a change on the contract, and compile it.
> const MyContractUpgraded = Contracts.getFromLocal('MyContract')
> myProject.upgradeProxy(proxy, MyContractUpgraded)


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