Corrected app directory

[carvinlo]

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Description

appDirs variable will get [undefined] when appInstanceDir variable is undefined.
const appDirs = [appInstanceDir] || (await getOrMakeApps(pilets[0], logLevel)); -> const appDirs = appInstanceDir ? [appInstanceDir] : (await getOrMakeApps(pilets[0], logLevel));

Remarks

[Optionally place any follow-up comments, remarks, observations, or notes here for future reference]

[FlorianRappl]

Thanks for spotting 🍻!

[carvinlo]

Or const appDirs = typeof appInstanceDir === 'undefined' ? [appInstanceDir] : (await getOrMakeApps(pilets[0], logLevel)); ?

[FlorianRappl]

I think how it was fixed was fine - the truthy check should be sufficient.