Solc-js Causes Node Scripts to Delay Finishing

[chase-manning]

If solc is imported into any node script, it causes that script to delay for a few seconds after finishing.

I have created a small repository to replicate this issue:

https://github.com/chase-manning/solc-bug-reproduce

Details on how to replicate are in the readme for that repo.

But in short, this script:

const solc = require("solc");
console.log("Script finished running");

when run with, for example, node index.js will lag for about 5 seconds after Script finished running is logged.

But this script:

console.log("Script finished running");

Will stop running immediately after the line is logged.

This issue cannot be replicated by importing any other package, and happens just with solc.

[cameel]

Yes, it's a known issue and it seems to actually be a problem in node.js: nodejs/node#36616

Thanks for the report but I'm going to close this since the problem is already tracked in ethereum/solidity#9297.

[chase-manning]

@cameel Thanks! Do you know of any workarounds that I could use? 😄

[cameel]

On older node.js versions a manual process.exit() used to help. That stopped working on node.js 17 but node --wasm-dynamic-tiering should work. Not sure if that feature was already released in a stable node.js version though.