Parent covers children invariant is not respected

[m09]

With the concept of leading comments in the UAST, the simple invariant of parent covering their children is not respected.

I think this might be non-intuitive to many users.

To reproduce:

// This is a comment

var a = 1;

The initial comment is a child of the expression assignment node (on current bblfsh web for example).

[bzz]

Closing as it seems to be a stuck-forever duplicate of #394

[m09]

Indeed it looks like a transferring bug, the original issue was in javascript-driver.