Lesson-5 : Ethers.js /SimpleStorage

[arpityadav25]

` nodejs
const ethers = require("ethers");
const fs = require("fs-extra");

async function main() {
const provider = new ethers.providers.JsonRpcProvider(
"http://127.0.0.1:7545"
);

const wallet = new ethers.Wallet(
"0xbe2196dfa52601176443363bf6861a19ecc00c3d143cc522c4817fc336b328fb",
provider // Pass the provider to the wallet constructor
);

const abi = fs.readFileSync("./SimpleStorage_sol_SimpleStorage.abi", "utf8");
const binary = fs.readFileSync(
"./SimpleStorage_sol_SimpleStorage.bin",
"utf8"
);
const contractFactory = new ethers.ContractFactory(abi, binary, wallet);
console.log("Deploying, please wait...");
const contract = await contractFactory.deploy();
console.log(contract);
}

main()
.then(() => process.exit(0))
.catch((error) => {
console.error(error);
process.exit(1);
});
`
I'm having trouble deploying this. whenever I try to deploy this code, it throws this error...
" TypeError: Cannot read properties of undefined (reading 'JsonRpcProvider')
at main (/root/hh-myhardhatcodework/deploy.js:5:41)
at Object. (/root/hh-myhardhatcodework/deploy.js:25:1)
at Module._compile (node:internal/modules/cjs/loader:1103:14)
at Object.Module._extensions..js (node:internal/modules/cjs/loader:1157:10)
at Module.load (node:internal/modules/cjs/loader:981:32)
at Function.Module._load (node:internal/modules/cjs/loader:822:12)
at Function.executeUserEntryPoint [as runMain] (node:internal/modules/run_main:77:12)
at node:internal/main/run_main_module:17:47 "
Can anyone please tell me how to resolve it?

[adityakhare86]

Downgrade ethers to 5.4.

To downgrade:

1. yarn remove ethers
2. Remove ethers and its version from package.json
3. yarn add [email protected]

[arpityadav25]

Thanks man it helped!

[arpityadav25]

To anyone going through the same trouble.
downgrade:

1. yarn remove ethers
2. Remove ethers and its version from package.json
3. yarn add [email protected],

Then you'll get an error 'could not detect network'
now you'll have to open the settings in the ganache( top right corner with the gear option), head to server, change the host name to 192.XXX.XXX, port number to 8545 and network id to 1337.
Also, copy the pass key again from a different index after making changes
It should work.

note: your solidity compiler version should be "0.8.7-fixed".
to change compiler version type this command-
" yarn remove solc " (It should remove your current compiler version)
then,
" yarn add solc@"0.8.7-fixed "
this will install the older version of solidity.
also, make sure to re-compile the contract, don't forget to edit "pragma solidity "your newly added version" to make sure you dont run into any errors, and ensure you've deleted the old SimpleStorage_sol_SimpleStorage.abi and SimpleStorage_sol_SimpleStorage.bin files, only then after you compile the contract. after doing all that, you shouldnt run into any other problems.
Also, copy the exact same code just as shown in the video and it should work fine!
if any problem still persists, feel free to ask!

[machinesr]

Hey, I had the same trouble as yours. I had followed along through downgrading ethers, but 'could not detect network' problem still persists. Do you have any solution?
Here's my code

const provider = new ethers.providers.JsonRpcProvider("192.168.100.159:8545");
  const wallet = new ethers.Wallet(
    "0xa180bbd0a7e9182ef633e1c296cc44f84153d9a7a9ba8abece28d5e9e9a40c0d",
    provider
  );
  const abi = fs.readFileSync("./SimpleStorage_sol_SimpleStorage.abi", "utf8");
  const binary = fs.readFileSync(
    "./SimpleStorage_sol_SimpleStorage.bin",
    "utf8"
  );

and here's the error

could not detect network (event="noNetwork", code=NETWORK_ERROR, version=providers/5.4.5)

[adityakhare86]

I think your error is more related to the network on which you are trying to run your contract instead of the original JsonRpcProvider error that the author got.

Can you tell more about the network that you are trying to your contract on, like is it Ganache or some testnet like Sepolia?

[machinesr]

I am so sorry, I had already realized my problem which was at my own fault. I didn't put the http:// in my JsonRpcProvider

const provider = new ethers.providers.JsonRpcProvider("http://192.168.100.159:8545");

Thank you for your help