.eslintrc.js

module.exports = {
  root: true,
  parserOptions: {
    sourceType: 'script',
  },
  extends: [
    // https://github.com/vuejs/eslint-plugin-vue#bulb-rules
    'plugin:vue/recommended',
    // https://github.com/standard/standard/blob/master/docs/RULES-en.md
    'standard',
    // https://github.com/prettier/eslint-config-prettier
    'prettier',
    'prettier/standard',
    'prettier/vue',
  ],
  rules: {
    // Only allow debugger in development
    'no-debugger': process.env.PRE_COMMIT ? 'error' : 'off',
    // Only allow `console.log` in development
    'no-console': process.env.PRE_COMMIT
      ? ['error', { allow: ['warn', 'error'] }]
      : 'off',
    'vue/array-bracket-spacing': 'error',
    'vue/arrow-spacing': 'error',
    'vue/block-spacing': 'error',
    'vue/brace-style': 'error',
    'vue/camelcase': 'error',
    'vue/comma-dangle': ['error', 'always-multiline'],
    'vue/component-name-in-template-casing': 'error',
    'vue/dot-location': ['error', 'property'],
    'vue/eqeqeq': 'error',
    'vue/key-spacing': 'error',
    'vue/keyword-spacing': 'error',
    'vue/no-boolean-default': ['error', 'default-false'],
    'vue/no-deprecated-scope-attribute': 'error',
    'vue/no-empty-pattern': 'error',
    'vue/object-curly-spacing': ['error', 'always'],
    'vue/space-infix-ops': 'error',
    'vue/space-unary-ops': 'error',
    'vue/v-on-function-call': 'error',
    'vue/v-slot-style': [
      'error',
      {
        atComponent: 'v-slot',
        default: 'v-slot',
        named: 'longform',
      },
    ],
    'vue/valid-v-slot': 'error',
  },
  overrides: [
    {
      files: ['src/**/*', 'tests/unit/**/*', 'tests/e2e/**/*'],
      parserOptions: {
        parser: 'babel-eslint',
        sourceType: 'module',
      },
      env: {
        browser: true,
      },
    },
    {
      files: ['**/*.unit.js'],
      parserOptions: {
        parser: 'babel-eslint',
        sourceType: 'module',
      },
      env: { jest: true },
      globals: {
        mount: false,
        shallowMount: false,
        shallowMountView: false,
        createComponentMocks: false,
        createModuleStore: false,
      },
    },
  ],
}