hardhat | development environment to compile deploy test | Blockchain library

by nomiclabs TypeScript Version: 2.22.3 License: Non-SPDX

X-Ray Key Features Code Snippets(1)Community Discussions(10)Vulnerabilities Install Support

kandi X-RAY | hardhat Summary

hardhat is a TypeScript library typically used in Blockchain, Ethereum applications. hardhat has no bugs, it has no vulnerabilities and it has medium support. However hardhat has a Non-SPDX License. You can download it from GitHub.

Hardhat is a development environment to compile, deploy, test, and debug your Ethereum software. Get Solidity stack traces & console.log.

Support

Quality

Security

License

Reuse

Support

hardhat has a medium active ecosystem.

It has 2555 star(s) with 590 fork(s). There are 44 watchers for this library.

There were 10 major release(s) in the last 6 months.

There are 388 open issues and 760 have been closed. On average issues are closed in 42 days. There are 58 open pull requests and 0 closed requests.

It has a neutral sentiment in the developer community.

The latest version of hardhat is 2.22.3

Quality

hardhat has no bugs reported.

Security

hardhat has no vulnerabilities reported, and its dependent libraries have no vulnerabilities reported.

License

hardhat has a Non-SPDX License.

Non-SPDX licenses can be open source with a non SPDX compliant license, or non open source licenses, and you need to review them closely before use.

Reuse

hardhat releases are available to install and integrate.

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hardhat Key Features

No Key Features are available at this moment for hardhat.

hardhat Examples and Code Snippets

Supply ETH to Aave through solidity

JavaScript

Lines of Code : 88

License : Strong Copyleft (CC BY-SA 4.0)

Copy

npm init --yes
npm install --save-dev hardhat 
npm install @nomiclabs/hardhat-waffle 
npm install --save-dev "@nomiclabs/hardhat-ethers@^2.0.0" "ethers@^5.0.0" "ethereum-waffle@^3.2.0"
npx hardhat 
(follow the prompt)

Community Discussions

Trending Discussions on hardhat

How to deploy hardhat contract to mainnet without ALCHEMY or INFURA?

How to disable eslint 'no-undef' for a specific package import?

Error deploying smart contract using Hardhat -- Error HH9: Error while loading Hardhat's configuration

ProviderError: transaction underpriced on Mumbai Testnet

imports via https not working in hardhat (solidity)

Does flattening smart contacts reduce deployment costs?

How to get Uniswap data from Hardhat's mainnet fork?

TypeError: state.buffer is not iterable when using Hardhat

How do I interact with Uniswap V2 in a Truffle test suite?

getting error when i deploy the NFT with ETH

QUESTION

How to deploy hardhat contract to mainnet without ALCHEMY or INFURA?

Asked 2022-Apr-14 at 17:58

How to deploy hardhat contract to mainnet without ALCHEMY or INFURA ?

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ANSWER

Answered 2022-Apr-14 at 17:58

Alchemy, Infura, and others, are services offering connection to nodes of the Ethereum network.

Contract deployment means that you broadcast a transaction with specific parameters (data field containing the compiled bytecode, to field empty). But you can only broadcast a transaction to the rest of the network from a node connected to the network.

So apart from using a third-party service, you can also run your own node. For example using the go-ethereum client software.

Then you'll be able to broadcast the transaction through this your own node, instead of a third-party one.

Source https://stackoverflow.com/questions/71874586

QUESTION

How to disable eslint 'no-undef' for a specific package import?

Asked 2022-Apr-10 at 07:39

I'm working with a framework ('hardhat') that automatically requires a package ('ethers') but eslint keeps calling it out as undefined. Requiring 'ethers' is not a solution because it just breaks everything; but from what I understand, a way to add exceptions to the entire document is to place overrides in a comment block above the entire thing.

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ANSWER

Answered 2022-Apr-10 at 07:39

Have a look at ESLint globals. Basically, you can declare a global value ethers in your ESLint configuration, and that will be treated as defined in all linted files.

For ESLint >= 7, if your configuration file is .eslintrc, add an entry like:

Source https://stackoverflow.com/questions/71811333

QUESTION

Error deploying smart contract using Hardhat -- Error HH9: Error while loading Hardhat's configuration

Asked 2022-Apr-08 at 07:31

Trying to deploy a smart contract using Hardhat but getting configuration error.

Here is the complete error details

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ANSWER

Answered 2022-Apr-08 at 07:02

As the error states, you are importing hardhat module in your hardhat configuration.

Source https://stackoverflow.com/questions/71792535

QUESTION

ProviderError: transaction underpriced on Mumbai Testnet

Asked 2022-Apr-04 at 15:25

I am building an NFT Market on the Polygon network.

I am able to deploy my code on localhost and everything works fine.

But when I try to it deploy to the mumbai testnet using the command npx hardhat run scripts/deploy.js --network mumbai

I run into this error. ProviderError: transaction underpriced

Could someone please help.

Thank you

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ANSWER

Answered 2022-Mar-04 at 06:12

Actually I too got this error in morning. Somehow I believe default gasPrice is not picked up. So I just updated my hardhat config file with following :-

Source https://stackoverflow.com/questions/71343598

QUESTION

imports via https not working in hardhat (solidity)

Asked 2022-Apr-04 at 03:02

Error HH406: Invalid import https://github.com/... from contracts/MyContract.sol. Hardhat doesn't support imports via https.

Trying to import forked contract from my github but https imports are not working in hardhat but works in remix.

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ANSWER

Answered 2022-Apr-01 at 04:58

I'm having the same problem right now, just checked with them here seemed like they are currently not supporting this function yet

Source https://stackoverflow.com/questions/71304283

QUESTION

Does flattening smart contacts reduce deployment costs?

Asked 2022-Apr-02 at 08:54

I want to reduce deployment cost of my ERC-721A contract.

In general; does flattening smart contract help to reduce it's cost?

Currently I am using ethers.js's contractFactory.deploy method with hardhat.

...

ANSWER

Answered 2022-Apr-02 at 08:54

The compiled contract has the same bytecode whether you flatten it or not.

So no, unfortunately, flattening will not help any cost reduction.

You can use Remix IDE for inspecting bytecode, assembly and deployment cost of your contracts

Source https://stackoverflow.com/questions/71708589

QUESTION

How to get Uniswap data from Hardhat's mainnet fork?

Asked 2022-Mar-26 at 20:08

I'm using the Uniswap SDK to fetch the price of ETH in the DAI/ETH pool from Uniswap using Hardhat's mainnet fork, except the query is returning the current price of ETH, instead of from the pegged block which is from a few months ago.

How do I fetch Uniswap pool information from Hardhat's mainnet fork? If it's not possible using the Uniswap SDK, is there any workarounds?

Thanks in advance!

...

ANSWER

Answered 2022-Mar-14 at 09:29

https://github.com/defi-wonderland/solidity-boilerplate/blob/main/test/utils/uniswap.ts

code here

Source https://stackoverflow.com/questions/71368595

QUESTION

TypeError: state.buffer is not iterable when using Hardhat

Asked 2022-Mar-22 at 15:08

I followed the instruction as hardhat's https://hardhat.org/getting-started/ .

npx hardhat node. And then I can connect to it with metamask.
npx hardhat run scripts/sample-script.js --network localhost to deploy the example.

But it returns me as below error:

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ANSWER

Answered 2022-Mar-13 at 22:29

Try updating your node version, I was using a node version that is non-compatible with hardhat (Version 10.01) and after update to 16.14.0 that issue was fixed.

Source https://stackoverflow.com/questions/71435727

QUESTION

How do I interact with Uniswap V2 in a Truffle test suite?

Asked 2022-Mar-12 at 21:28

I am looking for a way to create an automated test suite with Truffle that can test my smart contract's interactions with Uniswap V2. The Uniswap docs briefly mention testing with Truffle but do not provide any examples. I am looking to test it using a mainnet fork with ganache.

I'm guessing it's a similar process to the accepted answer for this question, but I'm specifically looking for a way to do it using Truffle and web3.js.

As an example, if I were testing the following contract:

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ANSWER

Answered 2022-Feb-12 at 12:48

If you use Uniswap platform to swap a token, you are going to have 2 steps. You are going to approve the token, in this step metamask will pop-up and you are going to confirm it. Then Uniswap will do the actual swap, it takes the tokens out of your wallet and does the exchange for you.

This is the swapExactETHForTokens function

Source https://stackoverflow.com/questions/70965282

QUESTION

getting error when i deploy the NFT with ETH

Asked 2022-Mar-09 at 17:13

I am new in NFT, i am trying to create test NFT, when i am trying to deploy that NFT, i am getting this error,insufficient funds for intrinsic transaction cost, even though in my account have 1 ETH balance here i have attached my whole code of it, can anyone please help me, how to resolve this issue ? MyNFT.sol

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ANSWER

Answered 2022-Feb-24 at 22:28

That error is clear. you do not have sufficient funds. This is how you are getting the account information:

Source https://stackoverflow.com/questions/71159017

Community Discussions, Code Snippets contain sources that include Stack Exchange Network

Vulnerabilities

No vulnerabilities reported

Install hardhat

You can download it from GitHub.

Support

For any new features, suggestions and bugs create an issue on GitHub. If you have any questions check and ask questions on community page Stack Overflow .

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