Ethereum Hardhat configuration project configuration with key infura -api
While setting up a new NPX hardhat project, you will find a mistake if you try to import the API -Infura key from your file. This problem is relatively common and can be solved by understanding how your hardhat project can be properly configured.
Error: HH1201 cannot find any value for the variable of the configuration ‘Infura_api_Key’
Error HH1201 shows that the configuration variable infura_api_key cannot be found in your code. This error usually occurs when the code tries to access or use a variable medium, but is not set.
How to fix the problem: Read your file .nv
To fix this problem, you have to make sure that your file .nv is properly configured with the Infura -API key. Here are a few steps with which you can fix the problem:
Step 1: Create a new file .nv
Create a new file called “.nv” on the trunk of your directory project. This file contains all of your environmental variables.
`Bash
Touch .nv
Step 2: Add the Infura -API key to your .nv file
Add the following line to your file .nv:
`Bash
Infura_api_key = your_infura_api_key_her
Replace your_infura_api_key_here with your actual key infura.
For example, if you use a private key or a variable medium for your important Infura API, you can add it in this way:
`Bash
Infura_api_key = your_private_key_her
Step 3: Update your hardhat configuration
To use the Infura -API in your hardhat project, you must update the configuration variables. In addition, you have to set the variable infura_api_key.
You can do this by with the following content adding a file infuraconfig.json to the tribal point of your project:
`Json
{
"Key": "", "
"Secret": ""
}
If you use a private key variable or a medium for your important Infura -API, update the “Infura_api_Key” field.
Step 4: Update your hardhat project configuration
Update the file hardhat.config.js to use updated configuration variables. Concerty add the following line:
`JavaScript
module.exports = {
// … other configurations …
DefaultConfig: {
// … other configurations …
Infura: {
Key: Process.env.infura_api_Key,
Secret: process.env.infura_secret
}
},
};
`
Step 5: Fill your hardhat project
Finally, start your hardhat project with the following command:
`Bash
NPX Hardhat
The variable Infura_api_Key should now be properly set for your API -Infura key.
Use example
Here is an example of the use of this configuration in a simple provision of an intelligent contract:
`JavaScript
Const eters = require (‘Eters’);
// Hardhat configurations
module.exports = {
// … other configurations …
DefaultConfig: {
// … other configurations …
Infura: {
Key: Process.env.infura_api_Key,
Secret: process.env.infura_secret
}
},
};
// provide an intelligent contract
Const -Deployer = New Eters.de Ployer (‘0x …’); // replace with your unfolded address contract
Asynchrical function main () {
attempt {
Const Contractdress = expect use. Address ();
Console.log (contract address);
} Catch (error) {
Console.error (error);
}
}
primarily ();
`
If you follow these steps, you should fix the “HH1201” error and successfully use your important Infura -API in your Hardhat project.