Bring back stack traces in pretty formatter

As of version 0.8.0 the pretty formatter no longer prints stack traces under failing steps - you have to wait until the end to see why a step failed.

In an ideal world where all scenarios are blazing fast this isn’t a problem, but unfortunately I’m not in the ideal world. This means I have to wait a long time before I can start investigating a failure.

Can we have a variant of the pretty formatter (pretty-verbose maybe) that spits out errors as they happen?

/cc @tooky @jbpros @mattwynne

[floribon]

I’ve found a workaround that works perfectly for me: use the StepResult hook and get the error from stepResult.getFailureException:

this.StepResult(function(stepResult) {
  if (stepResult.getStatus() === 'failed') {
    var exception = stepResult.getFailureException();
    console.error(exception.stack);
  }
});

Or do fancier things such as adding colors and indentation:

var stacks = exception.split('\n');
stacks[0] = '\x1b[31m' + stacks[0];
stacks[stacks.length-1] = stacks[stacks.length-1] + '\x1b[0m';
stacks.forEach(function(line) {
  console.error('    ' + line);
});

That’s not as clean as a built-in option but on the other hand this gives more flexibility to the user.

[lock[bot]]

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