Weird mangle error

[dhcmrlchtdj]

problem

Mangle is incorrect.

example

// input
function example() {
    let mangleError = [];
    let i = 10;
    while (--i) mangleError.push(i);
    return mangleError;
}

// output
"use strict";function example(){for(var a=[],b=10;--b;)a.push(b);return mangleError}

$ echo \
"function example() {
    let mangleError = [];
    let i = 10;
    while (--i) mangleError.push(i);
    return mangleError;
}" | ./node_modules/.bin/babel --presets=es2015,babili

package version

• babel-preset-es2015@6.24.1
• babel-preset-babili@0.1.2

---

update:
I found it's caused by --plugins=minify-simplify,transform-merge-sibling-variables,minify-mangle-names,transform-es2015-block-scoping

[boopathi]

Thanks. This is only when used with es2015-block-scoping .

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