.eslintrc.js

module.exports = {
    'env': {
        'browser': true,
        'es6': true,
        node: true
    },
    'extends': [
        'eslint:recommended',
        'plugin:@typescript-eslint/eslint-recommended',
        'plugin:@typescript-eslint/recommended',
        'plugin:jest/recommended',
        'plugin:jest/style'
    ],
    'globals': {
        'Atomics': 'readonly',
        'SharedArrayBuffer': 'readonly'
    },
    'parser': '@typescript-eslint/parser',
    'parserOptions': {
        'ecmaVersion': 2018,
        'sourceType': 'module'
    },
    'plugins': [
        '@typescript-eslint',
        'jest'
    ],
    'rules': {
        'indent': [
            'error',
            4
        ],
        'linebreak-style': [
            'error',
            'unix'
        ],
        'quotes': [
            'error',
            'single'
        ],
        'semi': [
            'error',
            'always'
        ],
        '@typescript-eslint/no-non-null-assertion': 'off'
    }
};