exceptions option for vue/no-multi-spaces

[rjgotten]

Tell us about your environment

• ESLint Version: 5.0.1
• eslint-plugin-vue Version: 4.5.0
• Node Version: 8.11.3 (LTS)

Please show your full configuration:

module.exports = {
  root: true,
  extends: "plugin:vue/recommended",
  parser: "vue-eslint-parser",
  parserOptions: {
    parser: "babel-eslint",
    sourceType: "module",
    ecmaVersion: 8
  },
  env: {
    browser: true,
    es6: true
  },
  plugins: ["vue"]
};

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

<i
  v-if="useIconArrow"
  :class="{
    'fa-angle-up'   : isExpanded,
    'fa-angle-down' : !isExpanded,
  }"
  class="fal"
></i>

What did you expect to happen?

No validation error from vue/no-multi-spaces, which is meant to handle unnecessary spaces on the template side and should not bother checking inside JS expressions. (That should be the domain of 'normal' ESLint rules.)

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

vue/no-multi-spaces gives an error on an object literal inside a JS expression, which aligns property assignments on the colon:

error  Multiple spaces found before ':'  vue/no-multi-spaces

[mysticatea]

Thank you for this issue.

This is intentional behavior rather than false positive.
I think that we can consider exceptions option like core no-multi-spaces rule.