Dead code elimination leaves break behind in while loop

[bbtgp]

For repl:

let test = class  {
  
  method(arg) {
    do {
      if(arg.condition) {
        break; // Problem
     }
    } while(false);

  }
  
}

outputs:

let test = class{
  method(a) {
    if(a.condition)
        break // Illegal 
    }
 }

packages/babel-plugin-minify-dead-code-elimination/src/index.js:591

[xingmarc]

Hi, I still got the Illegal break statement error on Babel REPL:
input:

var test = {
  metod: function(arg) {
    do {
      if(arg.condition) {
        break;
     }
    } while(false);
  }
}

output:

"use strict";var test={metod:function metod(a){if(a.condition)break}};

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