When using serve: false, root should be optional

[tonttu]

Prerequisites

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🚀 Feature Proposal

I just want to use the sendFile decorator without serving any files automatically, so I set serve: false. However, I still need to provide a valid path to root, otherwise checkRootPathForErrors complains. Now I resort to creating a dummy directory in tmpdir() just to keep this plugin happy, which seems a bit silly.

I think if serve: false is defined, checkRootPathForErrors should not be called at all.

Motivation

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Example

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[mcollina]

Thanks for reporting! Would you like to send a Pull Request to address this issue? Remember to add unit tests.

[tonttu]

Thank's for the quick response. I'm currently short on time and I don't think I'll be able to submit a PR at the moment.