WP_CLI::error() doesn't always terminate

[johnbillion]

The WP_CLI::error() method is marked as an early terminating method, but it doesn't terminate if the $exit parameter is set to false.

Its entry in the earlyTerminatingMethodCalls config should be removed and replaced with something else that's conditional, but I'm not sure what.

[szepeviktor]

I tell you not to use that $exit parameter.
Just like

phpstan-wordpress/README.md

Line 119 in f7ff091

- Do not enable `exit_error` in `WP_CLI::launch` or `WP_CLI::runcommand` to keep your code testable

It feels really-really bad to handle these parts of WordPress.
That is all I could contribute.

[herndlm]

a conditional return type using https://phpstan.org/writing-php-code/phpdoc-types#bottom-type in stubs might work 🤔 https://phpstan.org/r/cf63373b-41ba-4298-9639-26051d6eb5fb