ESLint config file

.editorconfig

root = true

[*]
indent_style = space
indent_size = 2
charset = utf-8
trim_trailing_whitespace = true
insert_final_newline = true

.eslintrc.js

// yarn add eslint prettier eslint-config-airbnb-base eslint-config-prettier eslint-plugin-import eslint-plugin-prettier

module.exports = {
  env: {
    es6: true,
    node: true,
  },
  extends: [
    'airbnb-base',
    'prettier'
  ],
  plugins: ['prettier'],
  globals: {
    Atomics: 'readonly',
    SharedArrayBuffer: 'readonly',
  },
  parserOptions: {
    ecmaVersion: 2018,
    sourceType: 'module',
  },
  rules: {
    "prettier/prettier": "error",
    "linebreak-style": 0,
    "no-console": "off",
    "class-methods-use-this": "off",
    "no-param-reassign": "off",
    "camelcase": "off",
    "no-unused-vars": ["error", { "aegsIgnorePattern": "next" }]
  },
  env: {
    "jest": true
  }
};

.prettierrc

{
  "singleQuote": true,
  "trailingComma": "es5"
}