operator-assignment fix is breaking the code

[nemoxps]

Tell us about your environment

• ESLint Version: v3.18.0
• Node Version: v7.7.2
• npm Version: v4.1.2

What parser (default, Babel-ESLint, etc.) are you using?
default

Please show your full configuration:

module.exports = {
    root: true,
    parserOptions: {
        ecmaVersion: 8,
    },
    rules: {
        'operator-assignment': [2, 'always'],
    },
};

What did you do? Please include the actual source code causing the issue.

test.js

tmp = tmp + (2 * options.x[y]);

$ eslint test.js --fix

What did you expect to happen?
I expected the fix function to fix the code.

What actually happened? Please include the actual, raw output from ESLint.
Instead, it broke the code.

$ eslint test.js --fix > output.txt

c:\nodejs\test\test.js
  1:25  error  Parsing error: Unexpected token ;

✖ 1 problem (1 error, 0 warnings)

test.js

tmp += (2 * options.x[y];

It seems, that the rule doesn't handle braces properly.

[not-an-aardvark]

Thanks for the bug report. I was able to reproduce this issue.