@uniswap/deploy-v3 NPM

Deploy Uniswap V3 Script

This package includes a CLI script for deploying the latest Uniswap V3 smart contracts to any EVM (Ethereum Virtual Machine) compatible network.

Licensing

Please note that Uniswap Protocol v3 is under BUSL license until 2023-04-01. To deploy on a new chain, please follow the Uniswap Governance Process to request a DAO vote to request an exception to the license.

Usage

Get the arguments for running the latest version of the script via npx @uniswap/deploy-v3 --help.

As of v1.0.3 the arguments are:

> npx @uniswap/deploy-v3 --help
Usage: npx @uniswap/deploy-v3 [options]

Options:
  -pk, --private-key <string>               Private key used to deploy all contracts
  -j, --json-rpc <url>                      JSON RPC URL where the program should be deployed
  -w9, --weth9-address <address>            Address of the WETH9 contract on this chain
  -ncl, --native-currency-label <string>    Native currency label, e.g. ETH
  -o, --owner-address <address>             Contract address that will own the deployed artifacts after the script runs
  -s, --state <path>                        Path to the JSON file containing the migrations state (optional) (default: "./state.json")
  -v2, --v2-core-factory-address <address>  The V2 core factory address used in the swap router (optional)
  -g, --gas-price <number>                  The gas price to pay in GWEI for each transaction (optional)
  -c, --confirmations <number>              How many confirmations to wait for after each transaction (optional) (default: "2")
  -V, --version                             output the version number
  -h, --help                                display help for command

This script runs a set of migrations, each migration deploying a contract or executing a transaction.

To use the script, you must fund an address, and pass the private key to the script so it can construct and broadcast the deployment transactions.

The block explorer verification process (e.g. Etherscan) is specific to the network. For the existing deployments, we have used the @nomiclabs/hardhat-etherscan hardhat plugin in the individual repositories to verify the deployment addresses.

Note that in between deployment steps, the script waits for confirmations. By default, this is set to 2. If the network only mines blocks when the transactions is queued (e.g. a local testnet), you must set confirmations to 0.

Development

To run unit tests, run yarn test.

For testing the script, run yarn start.

To publish the script, first create a version: npm version <version identifier>, then publish via npm publish. Don't forget to push your tagged commit!

FAQs

How much gas should I expect to use for full completion?

We estimate 30M - 40M gwei needed to run the full deploy script.

When I run the script, it says "Contract was already deployed..."

Delete state.json before a fresh deploy. state.json tracks which steps have already occurred. If there are any entries, the deploy script will attempt to pick up from the last step in state.json.