benjamn/ast-types — pull request #71 by briandipalma (2014-11-03 12:19:25+00:00)
Title: feat(NodePath.prune): deal with an IfStatement not having its consequent...

... after a prune.

If an IfStatement has it's consequent pruned and there is no alternate leave the test as
a ExpressionStatement. If the alternate still exists negate the test and move the alternate
to the consequent position.