Ethereum: “Receiving a Promise response when deploying a smart contract with Hardhat – how can I solve the problem?”
If you are a developer building smart contracts on the Ethereum blockchain using the popular Hardhat framework, you may encounter difficulties when deploying your contract. A common problem is an error response indicating that the deployment was successful but has not yet been deployed (i.e., it is in a pending state).
In this article, we will explore why this can happen and how to solve the problem.
What does “expect” mean?
When you use “ethers.getContractFactory().deploy()”, Hardhat creates an Ethereum smart contract factory that you can use to deploy contracts to the blockchain. The contract is created using Solidity, a programming language for writing smart contracts on the Ethereum network.
In some cases, your deployment script may not finish creating and deploying the contract in time for other code to call it. This can cause problems when trying to use or interact with an existing contract.
Why is my contract still “Pending”?
There are several reasons why your contract may be locked:
- Transaction timeout: If a transaction takes longer than expected to execute, Hardhat may discard it and delay the deployment process.
- Problems creating contracts: Sometimes creating contracts can take a while, especially if you are using advanced settings or complex code.
- Network congestion
}’ Response When Deploying Smart Contract Using Hardhat – How to Resolve?”
” src=”https://net24bd.com/wp-content/uploads/2025/02/98d62d20.png”>: If multiple nodes are trying to deploy contracts at the same time, network congestion can cause delays.
We will solve the problem
To fix this issue, follow these steps:
1. Check event timeouts
If your deployment script takes too long to create and deploy a contract, Hardhat may reject it. You can check if transactions timed out by examining the transactionHash output of the getContractFactory().deploy() call.
const factory = ethers.getContractFactory('BinaryvilleRobotsNFT');
const deploy = wait for factory.deploy();
const transactionHash = wait for deployment.wait();
//Check if the event has timed out
if (TransactionHash && EventHash.Timestamp < Block.Timestamp - 30000) {
// Handle timeout errors
} other {
// The deployment succeeded, but the contract is still pending
}
2. Optimize the deployment script
To speed up deployment times:
- Reduce the complexity of your Solidity code.
- Use a more efficient build configuration.
- Minimize the number of dependencies.
3. Check if the network is congested
If multiple nodes are trying to deploy contracts at the same time, consider using a distributed deployment strategy or optimizing your contract creation process to reduce network contention.
4. Handle timeouts explicitly
Instead of relying on the wait() function to handle timeouts implicitly, you can use a timeout callback function:
const factory = ethers.getContractFactory('BinaryvilleRobotsNFT');
const deployment = wait for factory deployment({
// Other parameters...
}, (error: any) => {
if (error && error code === 8) {
// Deployment timed out
} other {
// Deployment succeeded but the contract is still pending
}
});
By following these steps and troubleshooting tips, you should be able to fix the Promise {