.eslintrc.js

module.exports = {
    env: {
        browser: true,
        commonjs: true,
        es6: true,
        jasmine: true,
        jest: true,
        mocha: true,
        node: true,
        jquery: true,
    },
    plugins: [
        'eslint-plugin-html',
    ],
    globals: {
        RED: true,
        webthingsio: true,
    },
    extends: 'eslint:recommended',
    parser: 'babel-eslint',
    parserOptions: {
        sourceType: 'module',
        ecmaVersion: 8,
    },
    rules: {
        'arrow-parens': [
            'error',
            'always',
        ],
        'arrow-spacing': 'error',
        'block-scoped-var': 'error',
        'block-spacing': [
            'error',
            'always',
        ],
        'brace-style': [
            'error',
            '1tbs',
        ],
        'comma-dangle': [
            'error',
            'always-multiline',
        ],
        'comma-spacing': 'error',
        'comma-style': [
            'error',
            'last',
        ],
        'computed-property-spacing': [
            'error',
            'never',
        ],
        curly: 'error',
        'dot-notation': 'error',
        'eol-last': 'error',
        'func-call-spacing': [
            'error',
            'never',
        ],
        'implicit-arrow-linebreak': [
            'error',
            'beside',
        ],
        indent: [
            'error',
            4,
            {
                ArrayExpression: 'first',
                CallExpression: {
                    arguments: 'first',
                },
                FunctionDeclaration: {
                    parameters: 'first',
                },
                FunctionExpression: {
                    parameters: 'first',
                },
                ObjectExpression: 'first',
                SwitchCase: 1,
            },
        ],
        'key-spacing': [
            'error',
            {
                afterColon: true,
                beforeColon: false,
                mode: 'strict',
            },
        ],
        'keyword-spacing': [
            'error',
            {
                after: true,
                before: true,
            },
        ],
        'linebreak-style': [
            'error',
            'unix',
        ],
        'lines-between-class-members': [
            'error',
            'always',
        ],
        'max-len': [
            'error',
            80,
        ],
        'multiline-ternary': [
            'error',
            'always-multiline',
        ],
        'no-ex-assign': 'error',
        'no-fallthrough': 'error',
        'no-console': 0,
        'no-duplicate-imports': 'error',
        'no-eval': 'error',
        'no-floating-decimal': 'error',
        'no-implicit-globals': 'error',
        'no-implied-eval': 'error',
        'no-lonely-if': 'error',
        'no-async-promise-executor': 'error',
        'no-multi-spaces': [
            'error',
            {
                ignoreEOLComments: true,
            },
        ],
        'no-multiple-empty-lines': 'error',
        'no-prototype-builtins': 'off',
        'no-return-assign': 'error',
        'no-script-url': 'error',
        'no-self-compare': 'error',
        'no-sequences': 'error',
        'no-shadow-restricted-names': 'error',
        'no-tabs': 'error',
        'no-trailing-spaces': 'error',
        'no-undefined': 'error',
        'no-unmodified-loop-condition': 'error',
        'no-constant-condition': [
            'error',
            {
                checkLoops: false,
            },
        ],
        'no-unused-vars': [
            'error',
            {
                argsIgnorePattern: '^_',
                varsIgnorePattern: '^_',
            },
        ],
        'no-useless-computed-key': 'error',
        'no-useless-concat': 'error',
        'no-useless-constructor': 'error',
        'no-useless-return': 'error',
        'no-var': 'error',
        'no-void': 'error',
        'no-whitespace-before-property': 'error',
        'object-curly-newline': [
            'error',
            {
                consistent: true,
            },
        ],
        'object-curly-spacing': [
            'error',
            'never',
        ],
        'object-property-newline': [
            'error',
            {
                allowMultiplePropertiesPerLine: true,
            },
        ],
        'operator-linebreak': [
            'error',
            'after',
        ],
        'padded-blocks': [
            'error',
            {
                blocks: 'never',
            },
        ],
        'prefer-const': 'error',
        'prefer-template': 'error',
        'quote-props': [
            'error',
            'as-needed',
        ],
        quotes: [
            'error',
            'single',
            {
                allowTemplateLiterals: true,
            },
        ],
        semi: [
            'error',
            'always',
        ],
        'semi-spacing': [
            'error',
            {
                after: true,
                before: false,
            },
        ],
        'semi-style': [
            'error',
            'last',
        ],
        'space-before-blocks': [
            'error',
            'always',
        ],
        'space-before-function-paren': [
            'error',
            {
                anonymous: 'never',
                asyncArrow: 'always',
                named: 'never',
            },
        ],
        'space-in-parens': [
            'error',
            'never',
        ],
        'space-infix-ops': 'error',
        'space-unary-ops': [
            'error',
            {
                nonwords: false,
                words: true,
            },
        ],
        'spaced-comment': [
            'error',
            'always',
            {
                block: {
                    balanced: true,
                    exceptions: [
                        '*',
                    ],
                },
            },
        ],
        'switch-colon-spacing': [
            'error',
            {
                after: true,
                before: false,
            },
        ],
        'template-curly-spacing': [
            'error',
            'never',
        ],
        yoda: 'error',
    },
};