Describe the bug

Babel is removing some parentheses form this for loop, and the resulting code logs 0 instead of 1

Input code

let count = 0;
for (var a = 1 || (2 in {}) in { x: 1 }) count++;
console.log(count);

Expected behavior

Same code

Actual behavior

let count = 0;
for(var a = 1 || 2 in {} in {
    x: 1
})count++;
console.log(count);