Fix: Allow bind call with a single spread element in no-extra-bind

[mdjermanovic]

What is the purpose of this pull request? (put an "X" next to item)

[X] Bug fix

Tell us about your environment

• ESLint Version: 6.1.0
• Node Version: 10.16.0
• npm Version: 6.9.0

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

default

Please show your full configuration:

Configuration

module.exports = {
  parserOptions: {
    ecmaVersion: 2015,
  },
};

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

/*eslint no-extra-bind: "error"*/

var boundF = (function (a, b) { 
  return a + b;
}).bind(...foo);

What did you expect to happen?

No errors.

Bind calls that apply arguments are allowed, I guess it can be assumed that .bind(...foo) is such case.

What actually happened? Please include the actual, raw output from ESLint.

1 error

What changes did you make? (Give an overview)

Check if the argument is a spread element.

Is there anything you'd like reviewers to focus on?

[kaicataldo]

I hope I never actually see this out in the wild 😆 LGTM. Thanks for contributing!

[kaicataldo]

Verified using our demo.

[platinumazure]

LGTM, thanks!