sls deploy function -f <function> not respecting entry slsw.lib.entries

Bug Report

Description

Hi, I searched for this error but I could not find anything related.

serverless-webpack @ 5.3.5 works perfectly.

serverless-webpack @ 5.4.0 does not work as expected.

When I try to update only one function it tries to copy all the functions declared inside the serverless and not the one from slsw.lib.entries.

The whole process occurs OK, compilation and zip generation for just the function from slsw.lib.entries. But when the final process kicks in to copy the artifacts from .webpack to .serverless the plugin search for all the functions generation this error message (the function on the error message is the one not listed inside slsw.lib.entries):

ENOENT: no such file or directory, copyfile '/...../.webpack/<function>.zip' -> '.serverless/<function>.zip'

Obs.: I removed the full path and function name for simplicity.

• Serverless-Webpack Version you’re using: 5.4.0
• Webpack version you’re using: 5.27.1
• Serverless Framework Version you’re using: 2.28.7
• Operating System: Mac OS X 10.15.7
• Stack Trace (if available):

Error: ENOENT: no such file or directory, copyfile '/......./.webpack/<function>.zip' -> '.serverless/<function>.zip'
      at Object.copyFileSync (fs.js:1991:3)
      at ServerlessWebpack.copyArtifactByName (/....../node_modules/serverless-webpack/lib/packageModules.js:86:6)

[pgrzesik]

Hello 👋 ~Does someone have, by any chance, a minimal reproducible example that I could run on my side in order to debug/diagnose the problem?~ Nvm, managed to reproduce, will try to post PR with a fix as soon as possible.

[OskarKaminski]

Like @ffxsam said, package.individually: false is not optimal. Currently, the only option is to downgrade to v.5.3.5 or turn off the package.individually flag. Neither should be a solution.

I’d be glad if someone could review what caused the regression between v.5.3.5 and v.5.4.0.