Wrong code generated for while statement, edgecase

[msn0]

Describe the bug

The falsy while statement should not remove variable declarations.

To Reproduce

Minimal code to reproduce the bug

function a() {
  ++i;
  while (false) {
    var i = meow();
  }
}

Actual Output

If there is no Error thrown,

function a(){
  ++i;
}

Expected Output

function a(){
  ++i;
  var i;
}

Configuration

How are you using babel-minify?

babel-minify CLI

babel-minify version: 0.5.0

babel version : 7.0.0-beta.49

babel-minify-config: default

Possible solution

Looks like path should not be removed but instead replaced with extracted variables.

[msn0]

I think I've got a solution for that. I'll create a PR soon.