solidity coverage error : Error in plugin solidity-coverage: TypeError: cur._node._vm.on is not a function

[behzadz1]

when running yarn hardhat coverage I am getting below error:

Error in plugin solidity-coverage: TypeError: cur._node._vm.on is not a function

I am running redhat 2.11.0.

can someone help please.

[alymurtazamemon]

@behzadz1 This seems the latest filed issue on their repo. Try this version and let me know npm i --save-dev solidity-coverage@0.7.21

[behzadz1]

same error mate:

~/Ethereum/hardhat-01 # npm i --save-dev solidity-coverage@0.7.21

added 19 packages, changed 5 packages, and audited 889 packages in 12s
~/Ethereum/hardhat-01 # yarnn hardhat coverage
zsh: command not found: yarnn
~/Ethereum/hardhat-01 # yarn hardhat coverage
yarn run v1.22.19
$ /Users/Zad/Ethereum/hardhat-01/node_modules/.bin/hardhat coverage

solidity-coverage: v0.7.21

SimpleStorage.sol

Compiled 1 Solidity file successfully
Error in plugin solidity-coverage: TypeError: cur._node._vm.on is not a function

[alymurtazamemon]

@behzadz1 push the code to GitHub and leave a link here.

[RoboCrypter]

@behzadz1 : I know what this problem is, I have solved it in this disscussion as well #2322

Its the issue with the new hardhat version causing a lot of problems :

Just use this hardhat older version I have mention below, It will definitely fix your issue :

You can add that, by the following command : yarn add --dev hardhat@2.10.2

Let me know if your issue is resolved!

[RoboCrypter]

@behzadz1 : If your issue is resolved! Kindly mark the answer as answered to close this discussion as answered! ThankYou

Have a good one!

[othaime-en]

@behzadz1 It appears the latest version of hardhat has this issue. Try installing a previous version of hardhat (version 2.10.1 or version 2.10.2)

Run yarn add --dev hardhat@2.10.2

[behzadz1]

correct answer, thank you.