[12.x] Adapting blank to Evaluate Closures

[devajmeireles]

The blank is an extremely useful helper, but with one flaw: it does not support evaluating closures. With this PR, we have added support for evaluating closures primarily within the scope of the blank method so that the $value is evaluated right afterward.

Before:

blank(fn () => null); // false

After:

blank(fn () => null); // true

[PerryvanderMeer]

This is a breaking change, so it might be better to attempt targeting master.

[devajmeireles]

This is a breaking change, so it might be better to attempt targeting master.

You're right! Thanks.