Do not error when baseline is generated when all errors are fixed

[alexander-schranz]

I'm not sure if there is more needed. When I updated Jan0707/phpstan-prophecy#266 to phpstan 1.0 I found out after I fixed all errors phpstan will error that it can not update the baseline when there are 0 errors. I think it would great if it update the baseline with an empty array and so not exit 1 when there are no errors found.

[ondrejmirtes]

Hi, what's the point of an empty baseline? You can simply remove the file and the includes :)

[alexander-schranz]

@ondrejmirtes I think it is no error to have an empty baseline and so the command should not fail.

[Lctrs]

@ondrejmirtes That makes it difficult to script it.

[Lctrs]

@ondrejmirtes May you please reconsider your position on this ? Projects are not set in stone, baseline can have to be recreated again. I would really like to just run make generate-baseline and have a working install, whether my baseline is empty or not.

Currently with PHPStan 1.0, this is very cumbersome to do.

[ondrejmirtes]

I'd accept a PR with "--allow-empty-baseline" CLI option that would make the exit code 0 in this case.

[ondrejmirtes]

Solved: #776