babili made variable lose

[lin-chao]

Babili 0.0.11

Input:

let tabs = [1,2,3,4,5]
let tabIdx = 0

for (let i = 0; i < tabs.length; i++) {
  // do something
}

console.log({
  tabIdx: tabIdx
})

Output:

"use strict";
for (var tabs = [1, 2, 3, 4, 5], i = 0; i < tabs.length; i++);
console.log({
  tabIdx: tabIdx
});

can not find variable: tabIdx

[boopathi]

This happens when using with es2015 preset.

let is converted to var and brought inside

for(var tabs = [], tabId = 0, i = 0; ; ) {} // tabId becomes deadcode 
use(tabId); // still treated as let binding 

@kangax I guess this is another binding issue