Ethereum Hardhat Project Setup Issue with INFURA API KEY
When setting up a new npx hardhat project, an error occurs when attempting to import the Infura API key from the .env file. This is a relatively common issue and can be resolved by learning how to properly configure your Hardhat project.
Error: HH1201 Could not find a value for configuration variable ‘INFURA_API_KEY’
Error HH1201 indicates that the configuration variable INFURA_API_KEY cannot be found in your code. This error usually occurs when your code attempts to access or use an environment variable, but it is not set.
How to fix: Read your .env file
To resolve this issue, you need to ensure that your .env file is properly configured with the Infura API key. Here are some steps to help you solve the problem:
Step 1: Create a new .env file
Create a new file named .env in the root of your project directory. This file will contain all your environment variables.
tap .env
Step 2: Add your Infura API key to your .env file
Add the following line to your .env file:
INFURA_API_KEY=YOUR_INFURA_API_KEY_HERE
Replace YOUR_INFURA_API_KEY_HERE with your actual Infura API key.
For example, if you are using a private key or environment variable for your Infura API key, you can add it like this:
ENTER_API_KEY=YOUR_PRIVATE_KEY_HERE
Step 3: Update your helmet configuration
To use the Infura API in your Hardhat project, you need to update your configuration variables. Specifically, you need to set the INFURA_API_KEY variable.
You can do this by adding an infuraConfig.json file to the root of your project with the following content:
{
"key": "",
"secret": ""
}
If you are using a private key or environment variable for your Infura API key, update the INFURA_API_KEY field accordingly.
Step 4: Update your Hardhat project configuration
Update your hardhat.config.js file to use the updated configuration variables. Specifically, add the following line:
module.export = {
// ... more configurations ...
default configuration: {
// ... more configurations ...
infura: {
key: process.env.INFURA_API_KEY,
secret: process.env.INFURA_SECRET
}
},
};
Step 5: Run your Hardhat project
Finally, run your Hardhat project using the following command:
hardhat npx
The INFURA_API_KEY variable should now be set correctly for your Infura API key.
Example Use Case
Here is an example of how to use this configuration in a simple smart contract deployment:
const ethers = require('eteri');
// Helmet configurations
module.export = {
// ... more configurations ...
default configuration: {
// ... more configurations ...
rage: {
key: process.env.INFURA_API_KEY,
secret: process.env.INFURA_SECRET
}
},
};
// Smart contract deployment
const deployer = new ethers.Deployer('0x...'); // replace with the address of your deployed contract
async function main() {
Attempt {
const contractAddress = await deployer.address();
console.log(contractAddress);
} catch(error) {
console. error(error);
}
}
main();
Following these steps should resolve the HH1201 error and allow you to successfully use your Infura API key in your Hardhat project.