class X::Promise::CauseOnlyValidOnBroken

Error due to asking why an unbroken promise has been broken.

class X::Promise::CauseOnlyValidOnBroken is Exception { }

This exception is thrown when code expects a Promise to be broken, and asks why it has been broken, but the Promise has in fact, not yet been broken.

Methods

method promise()

Returns the Promise that was asked about.

method status()

Returns the status the Promise had at that time.