After deleting the 'node_modules' folder, a folder named 'copied_files.tlog' is recreated over and over again

[barakman]

After deleting the node_modules folder, a folder named node_modules/scrypt/build/Release/obj/copied_files/copied_files.tlog is recreated, and then recreated over and over again when deleted.

This folder contains files with the name prefix link-VCTIP.

It feels like scrypt has possibly spawned a sub-process which remains alive.

Is there a way to prevent this unnecessary behavior?

[chrisveness]

I think Barry may have abandoned this project. If you are using Node.js v10.5.0+, you could try my scrypt-kdf, which is a simple pure-JS wrapper around the native OpenSSL implementation of scrypt. If you try it, I would be interested to know whether you have any issues.

[barakman]

@chrisveness: Thank you for reaching out.

I am not importing this module directly in package.json, so it probably comes along with one of the other modules required in that file:

    "websocket": "^1.0.0",
    "bignumber.js": "^7.0.0",
    "decimal.js": "^10.0.0",
    "truffle": "4.1.14",
    "ganache-cli": "6.1.8",
    "solidity-coverage": "0.5.8",
    "ethereumjs-testrpc-sc": "6.1.6",
    "openzeppelin-solidity": "1.12.0",
    "web3": "1.0.0-beta.34"

[chrisveness]

The dependency appears to be coming from scrypt.js (which no longer has a github repository), which is a dependency of ethereumjs-wallet, in turn a dependency of ganache-core, in turn a dependency of ganache-cli.

[barakman]

@chrisveness: OK, so I should probably report this in each one of the repositories above. Is there an official substitute for scrypt.js, which can be used instead (something with an "active owner")? Thanks.

[chrisveness]

I don't know about any substitute for scrypt.js, but the collaborator listed on npm is @axic, who is also a collaborator on ethereumjs-wallet, so it might be worth reaching out to him.

[chrisveness]

@axic – for Node.js prior to 10.5.0, and for browser, scrypt-async looks a good alternative to the OpenSSL implementation of scrypt.

Edit: scrypt-async can be used as a polyfill for the OpenSSL scrypt to enable scrypt-kdf to be used with Node.js prior to 10.5.0.