.eslintrc.js

module.exports = {
    env: {
        commonjs: true,
        es2021: true,
        node: true,
        jest: true,
    },
    extends: 'eslint:recommended',
    parserOptions: {
        ecmaVersion: 13,
    },
    rules: {
        'array-bracket-spacing': ['error', 'never'],
        'array-element-newline': ['error', 'consistent'],
        'arrow-spacing': ['error', { before: true, after: true }],
        'arrow-parens': ['error', 'always'],
        'block-spacing': ['error', 'always'],
        'brace-style': ['error', '1tbs', { allowSingleLine: true }],
        'comma-dangle': ['error', 'always-multiline'],
        'comma-spacing': ['error', { before: false, after: true }],
        'comma-style': ['error', 'last'],
        'computed-property-spacing': ['error', 'never'],
        'default-case-last': ['error'],
        'dot-location': ['error', 'property'],
        'func-call-spacing': ['error', 'never'],
        'function-call-argument-newline': ['error', 'consistent'],
        'eol-last': ['error', 'always'],
        'indent': ['error', 4],
        'key-spacing': ['error', { mode: 'strict' }],
        'keyword-spacing': ['error', { before: true, after: true }],
        'linebreak-style': ['error', 'unix'],
        'no-multi-spaces': 'error',
        'no-multiple-empty-lines': ['error', { max: 1, maxBOF: 0, maxEOF: 1 }],
        'no-nested-ternary': 'error',
        'no-new-object': 'error',
        'no-new-wrappers': 'error',
        'no-octal-escape': 'error',
        'no-return-await': 'error',
        'no-tabs': 'error',
        'no-throw-literal': 'error',
        'no-use-before-define': ['error', { functions: false, classes: true, variables: true }],
        'no-whitespace-before-property': 'error',
        'object-curly-spacing': ['error', 'always'],
        'operator-linebreak': ['error', 'before'],
        'padded-blocks': ['error', 'never'],
        'prefer-promise-reject-errors': 'error',
        'prefer-rest-params': 'error',
        'prefer-spread': 'error',
        'prefer-template': 'error',
        'quote-props': ['error', 'consistent-as-needed'],
        'quotes': ['error', 'single'],
        'rest-spread-spacing': ['error', 'never'],
        'semi': ['error', 'always'],
        'space-before-function-paren': ['error', { anonymous: 'never', named: 'never', asyncArrow: 'always' }],
        'template-curly-spacing': ['error', 'never'],
    },
};