eslint.config.js

import babelParser from '@babel/eslint-parser'
import globals from 'globals'
import js from '@eslint/js'
import pluginImport from 'eslint-plugin-import'

export default [
  js.configs.recommended,
  pluginImport.flatConfigs.recommended,
  {
    languageOptions: {
      globals: {
        ...globals.browser,
        ...globals.node,
        $: true,
        jQuery: true
      },
      parser: babelParser,
      parserOptions: {
        requireConfigFile: false
      },
      ecmaVersion: 'latest',
      sourceType: 'module'
    },
    rules: {
      'array-bracket-newline': ['error', 'consistent'],
      'array-bracket-spacing': ['error', 'never'],
      'array-element-newline': 'off',
      'arrow-body-style': ['error', 'as-needed'],
      'arrow-parens': ['error', 'as-needed'],
      'arrow-spacing': ['error', { after: true, before: true }],
      'block-spacing': 'error',
      'brace-style': ['error', '1tbs'],
      camelcase: 'off',
      'comma-dangle': ['error', 'never'],
      'comma-spacing': ['error', { after: true, before: false }],
      'comma-style': 'off',
      'computed-property-spacing': ['error', 'never'],
      'default-case': 'error',
      'dot-location': ['error', 'property'],
      'eol-last': ['error', 'always'],
      eqeqeq: 'error',
      'func-call-spacing': ['error', 'never'],
      'guard-for-in': 'warn',
      indent: ['error', 2, {
        ArrayExpression: 1,
        CallExpression: { arguments: 1 },
        FunctionDeclaration: { parameters: 'first' },
        ImportDeclaration: 'first',
        MemberExpression: 1,
        ObjectExpression: 1,
        SwitchCase: 1
      }],
      'import/extensions': 'off',
      'import/no-named-as-default-member': 'off',
      'import/no-unresolved': 'off',
      'key-spacing': ['error', { afterColon: true, beforeColon: false, mode: 'strict' }],
      'keyword-spacing': ['error', { after: true, before: true }],
      'linebreak-style': ['error', 'unix'],
      'line-comment-position': 'off',
      'lines-around-comment': 'off',
      'lines-between-class-members': ['error', 'always'],
      'max-len': 'off',
      'max-statements-per-line': ['error', { max: 1 }],
      'multiline-ternary': 'off',
      'no-alert': 'error',
      'no-async-promise-executor': 'off',
      'no-case-declarations': 'off',
      'no-console': ['warn', { allow: ['warn', 'error', 'trace'] }],
      'no-duplicate-imports': 'error',
      'no-else-return': ['error', { allowElseIf: false }],
      'no-extra-parens': 'error',
      'no-lonely-if': 'error',
      'no-mixed-spaces-and-tabs': 'error',
      'no-multi-spaces': 'error',
      'no-multi-str': 'error',
      'no-multiple-empty-lines': 'error',
      'no-new-func': 'error',
      'no-param-reassign': 'off',
      'no-prototype-builtins': 'off',
      'no-return-assign': 'error',
      'no-return-await': 'error',
      'no-sequences': 'error',
      'no-tabs': 'error',
      'no-throw-literal': 'error',
      'no-trailing-spaces': 'error',
      'no-undef-init': 'error',
      'no-unused-vars': 'error',
      'no-use-before-define': 'warn',
      'no-useless-constructor': 'warn',
      'no-var': 'error',
      'no-void': 'error',
      'no-whitespace-before-property': 'error',
      'object-curly-spacing': ['error', 'always'],
      'object-shorthand': 'error',
      'one-var': ['error', 'never'],
      'operator-assignment': ['error', 'always'],
      'operator-linebreak': ['error', 'after'],
      'padding-line-between-statements': [
        'error',
        { blankLine: 'always', next: '*', prev: ['const', 'let', 'var'] },
        { blankLine: 'any', next: ['const', 'let', 'var'], prev: ['const', 'let', 'var'] },
        { blankLine: 'always', next: 'export', prev: '*' }
      ],
      'prefer-const': 'error',
      'prefer-spread': 'error',
      'prefer-template': 'error',
      'quote-props': ['error', 'as-needed'],
      quotes: ['error', 'single'],
      semi: ['error', 'never'],
      'semi-spacing': ['error', { after: true, before: false }],
      'semi-style': ['error', 'last'],
      'sort-imports': ['error', {
        ignoreCase: false,
        ignoreDeclarationSort: true,
        ignoreMemberSort: false,
        memberSyntaxSortOrder: ['none', 'all', 'multiple', 'single'],
        allowSeparatedGroups: true
      }],
      'space-before-blocks': ['error', { classes: 'always', functions: 'always', keywords: 'always' }],
      'space-before-function-paren': ['error', 'always'],
      'space-in-parens': ['error', 'never'],
      'space-infix-ops': 'error',
      'spaced-comment': ['error', 'always'],
      'switch-colon-spacing': 'error',
      'template-curly-spacing': ['error', 'never']
    }
  }
]