still learning Solidity and all ecosystem around it and I still thinking about the best way how to perform deployment.

I have my solidity contracts (using HardHat suite) where I have some console.log statements as same as comments.

But I believe it would be better to clean all comments and console.log before deploying to production.

So what I would like to do is:

  • remove all console.logs
  • remove all comments
  • run prettier to re-format code

And then, tell HardHat to compile & deploy this modified contracts (for example exported to contracts.prod) and deploy it to production.

Are there any tools for that? Or should I write some scripts by myself by using regex/prettier manually?



2 Answers 2


Yes, there is Hardhat plugin called hardhat-log-remover that can do this for you. You just add it as a plugin in your Hardhat config, and then you can run it from the terminal like this:

$ yarn run hardhat remove-logs
  • 1
    thanks, I will check it! Commented Dec 18, 2022 at 17:54
  • 1
    One more thanks for the reply. It seems that hardhat-preprocessor fits even more to my use case. Commented Dec 18, 2022 at 18:29
  • No worries, happy to help. Feel free to mark the answer as accepted if it helped you. Commented Dec 18, 2022 at 20:07

It is worth reviewing the work of hardhat-log-remover. For example:

if (condition) console.log('...');

will be converted to:

if (condition) action;

which is wrong

If we use {}:

if (condition) { console.log('...'); }

will be converted to

if (condition) { }

which is redundant

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