How generating a key via hashFiles is supposed to work if the cache is not yet restored?

[leshikus]

I wonder how the standard usecase with key = ${{ runner.os }}-node-${{ hashFiles('**/package-lock.json') }} works. The cache is not restored yet, how hashFiles finds the files to hash?

[dhadka]

The idea is that you're computing the hash of files already checked into the repo. For the case of package-lock.json, NPM recommends checking in this file as it contains the exact dependencies and versions used by your program (more details at https://docs.npmjs.com/cli/v8/configuring-npm/package-lock-json).

[leshikus]

Thanks!