Hardhat
@HardhatHQ
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The Ethereum development environment for professionals by @NomicFoundation
Joined July 2020
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Hardhat for Visual Studio Code is now in public beta! The Solidity editing experience you were waiting for 🥳
Check it out
What does it offer? 👇
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Hardhat 2.4.0 is out!
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Hardhat v2.11.0 is out 🥳
The Merge support and performance improvements on compilation that make it *fast*.
Test in a post-merge env with compile taking 40% less in most cases, and a few taking 90% less!
Check out the release notes to learn more
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We’ll start working on adding support for tests in Solidity soon 🙃
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Hardhat 2.10.0 is out, and it marks a change in the product direction that Hardhat has historically taken.
🧵
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Introducing Hardhat Ignition: A refreshed deployments experience
Navigating the headaches of deployment execution is now a thing of the past!
Thread 🧵
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Solidity developers: sign up for the private beta of our Hardhat VSCode extension here
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Introducing our latest plugin: hardhat-viem! It seamlessly brings the
@wagmi_sh
Viem library into Hardhat projects for a smoother dev experience.
Check it out
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1/ PSA
On Friday morning EST we identified an attempt to attack the Hardhat community via a malicious NPM package. Your private keys are most likely SAFU, but if you installed the hardhat-waffle plugin during the past week, read on.
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We just released Hardhat 2.5.0 with support for the London hardfork.
You can now easily test against EIP1559!
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Hardhat VSCode v0.2.0 just dropped with hovers to show type information on variables, function calls, and more! Give it a try 👷♂️
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We've released Hardhat 2.1.0 with the much-awaited increased mining flexibility! Check it out
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A sneak peek into the upcoming launch of Hardhat Ignition
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We rewrote Hardhat's
@vyperlang
plugin from scratch! Now compilation works as well as in Solidity, with fewer dependencies, and we added support for using multiple versions of Vyper in the same project. Check it out!
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Hardhat is ready for Berlin. You can now test how your contracts will behave with the new gas cost changes, locally!
Check out the 2.2.0 release
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- Up to 2x improvement in mainnet forking speed in our tests
- Parallel test running with an updated version of Mocha.
- Faster compilation times through parallel contract compilation
- New RPC method to instantly mine large amounts of blocks (hardhat_mine)
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Learn about the team behind Hardhat, some upcoming projects and open positions
We believe dev experience to be crucial for Ethereum to succeed. Without good devex new devs churn, the learning curve is longer, productivity is lower and great talents are tempted to work on other platforms.
Working at Nomic Labs is working to bring about Ethereum's vision.
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Symbol renaming in Solidity should be easy.
Check out Hardhat VSCode 🥳
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Check out our tutorial on how to automate a headache-free deployment with Hardhat Ignition!
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We just released hardhat-shorthand! A global binary that runs the project's locally installed hardhat and supports shell autocompletion.
Check it out
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- Solidity 0.8 support for custom errors and panic codes
- New minimum gas price feature to simulate network conditions, as well as higher-gas tx replacement
- new RPC methods: hardhat_setNonce, hardhat_setBalance, hardhat_setCode, hardhat_setStorageAt and hardhat_dropTransaction
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The latest release of hardhat-etherscan includes one of the most highly requested features: being able to specify multiple API keys. Check it out!
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Join us for an informal community meetup in Bogotá next week 👷♂️👷♀️
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This plugin is built on top of the new provider extensions extensibility point added in Hardhat v2.16.0
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We've just released Hardhat v2.17.3! This version changes the default EVM target to Paris for solc versions starting from 0.8.20.
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⚠️ PSA: Hardhat has not launched any kind of desktop app. Be careful with spam messages sent to the community containing links to a malicious website.
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6/ We take responsibility for this and have now squatted every official package name outside the
@NomicLabs
scope. We encourage all projects publishing packages on NPM to regularly check for malicious packages targeting your communities.
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Solidity code navigation: go to definition, type definition, and references.
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Hardhat v2.19.0 is out with a new feature: configuration variables!
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The new hardhat-ledger official plugin is out! Check it out
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Also, Hardhat for Visual Studio Code is graduating out of beta, with a 50x performance improvement in inline compilation errors.
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Check it out!
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We're also releasing a new official Hardhat Chai Matchers plugin, alongside a library of helpers to interact with Hardhat Network's JSON-RPC methods.
These changes mean easier installation and 57% fewer dependencies in a brand new setup.
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Also, when starting a project, you can now use a Viem-based toolbox
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Fixing of Solidity function signature issues: add missing visibility keywords, include virtual/override when inheriting contract changes, and tighten the mutability of a function by bumping view to pure.
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Check out the announcement and release notes to learn more, and give the refreshed Hardhat experience a try!
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Hardhat VSCode is in beta, and we need the community's collaboration by reporting issues on Github 💞
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4/ The exploit ran upon installation (NPM's postinstall) and was unsophisticated. It uploaded package.json, /etc/hosts, /etc/passwd and Kubernetes credential files (~/.kube/config) to a remote server.
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And more! Check out the marketplace link in the first tweet for the full list of features and support across tools. Some of these features only work in Hardhat projects for now.
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7/ If you have any doubts or questions about this join our Discord to chat with the team
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@OpenZeppelin
tutorials now featuring Hardhat
Learn how to:
👷 Develop smart contracts
💻 Deploy and interact
🧪 Write automated tests
🌐 Connect to public test networks
🆙 Upgrade smart contracts
🚀 Prepare for mainnet
Check out the OpenZeppelin Learn guides using
@hardhatHQ
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5/ You can check whether you installed the malicious package by running `npm ls hardhat-waffle` inside an NPM project. If you use Kubernetes and kubectl, we suggest renewing your credentials.
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Hardhat Ignition 0.11.1 is out! This release includes UI improvements and addresses in checksum format
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Are you at
@ETHBerlin
? Come meet the Hardhat team!
@fvictorio_nan
is around to chat Hardhat, Nomic and Ethereum development. Slide into his dms 👷♂️
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We’re calling this the Hardhat Toolbox, which is a bundle of plugins and functionality that the Nomic Foundation team considers to be the best way to get started with a new Ethereum project.
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While retaining those core values, Hardhat 2.10.0 now offers a complete and opinionated setup that is ready to start building Ethereum software out-of-the-box. No decisions on plugins, libraries, or dependencies. Just get going.
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As usual, Hardhat is participating in
@gitcoin
's matching round. We'll appreciate and put to good use any donations you can make!
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Your deployment execution got interrupted due to an infra outage? network down? No problem! Just rerun
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3/ The strategy used was simply squatting a package name that we publish under our
@NomicLabs
NPM scope so that users would mistakenly install "hardhat-waffle" instead of "
@nomiclabs
/hardhat-waffle".
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We'd love to hear your feedback! Check it out.
Docs
Github
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2/ The offending package was , which has been taken down by the NPM security team upon our request. The package was available for about 5 days before we took notice, and had about ~50 downloads. The majority of these are most likely bots.
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Hardhat’s core values have always been optionality, flexibility, and extensibility, enabling it to be used in whatever ways were needed and found to be useful.
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The main deployment pain points Hardhat Ignition addresses are:
1. Boilerplate code
2. Unreliability due to edge cases
3. Interrupted deployments
4. Modifying existing deployments (e.g. ops from EOA initially to later transition to multisig, new components, upgrades, etc)
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You can still use Shanghai as the target EVM if you want, but you'll need to explicitly set it in our config. For more details, check the release notes:
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As we execute the deployment for the module above, we can appreciate how Hardhat Ignition batches operations and executes steps in a parallel fashion.
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Hardhat Ignition is a declarative system for deploying smart contracts on Ethereum. It allows you to focus on your project instead of getting caught up in the execution details. It’s a better end-to-end deployment experience!
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Some of our favorite features are:
1. Declarative deployments with automatic execution
2. Interruption recovery
3. Automatic integrations of changes into existing deployments
5. Gas fee spike management
6. Transaction parallelization
7. Deployment visualization report
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The most fundamental aspect of using Hardhat Ignition is writing deployment modules. Check out a simple module defining a SaturnV contract instance that depends on a LunarExplorationModule contract, which we'll provide as an argument to call SaturnV.load
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If a completed deployment requires changes, no need for additional integration code! Simply adjust the modules and rerun the deployment. Hardhat Ignition takes over from there. In the following example, we add a SaturnV.launch call to our previously deployed module.
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Configuration variables replace environment variables and dotenv for a better and safer experience. Check our guide to learn how to migrate:
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Until now, Hardhat always delegated to solc the decision of which EVM version to target when the user didn't specify one. But today many users develop for non-mainnet chains, and most of those have not adopted the Shanghai hardfork yet.
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However, as we described in this thread, the Ethereum and Hardhat development ecosystems grew too large for easy navigation among the many different paths and viable options.
Hardhat motivations and strategy: a bit of history and future roadmap
🧵
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