.eslintrc.js

module.exports = {
    parserOptions: {
        ecmaVersion: 2017,
        ecmaFeatures: {
            spread: true,
            experimentalObjectRestSpread: true,
            classes: true,
        },
        sourceType: 'module',
    },
    env: {
        browser: true,
        node: true,
        mocha: true,
        es6: true,
    },
    extends: ['eslint:recommended', 'prettier', 'prettier/standard'],
    plugins: ['prettier'],
    rules: {
        'no-console': ['error'],
        'no-fallthrough': ['off'],
        'no-loop-func': ['warn'],
        'no-process-exit': ['off'],
        'no-shadow': ['off'],
        'no-underscore-dangle': ['off'],
        'no-unused-vars': ['error', { args: 'all', argsIgnorePattern: '^__' }],
        'no-useless-escape': ['warn'],
        'no-var': ['error'],
        camelcase: ['error', { properties: 'never' }],
        'comma-dangle': ['off'],
        'consistent-this': ['warn', 'self'],
        curly: ['error', 'all'],
        eqeqeq: ['off'],
        'linebreak-style': ['error', 'unix'],
        'prefer-const': ['error'],
        quotes: ['off'],
        'require-yield': ['warn'],
        'prettier/prettier': 'error',
    },
};