.eslintrc.js

module.exports = {
  env: {
    browser: true,
    es6: true,
    node: true,
  },
  extends: [
    'eslint:recommended',
    'plugin:@typescript-eslint/eslint-recommended',
    'plugin:@typescript-eslint/recommended',
    'prettier',
    'airbnb-base',
    'airbnb-typescript/base',
    'plugin:prettier/recommended',
    'typestrict',
  ],
  globals: {
    Atomics: 'readonly',
    SharedArrayBuffer: 'readonly',
  },
  parser: '@typescript-eslint/parser',
  parserOptions: {
    ecmaVersion: 2018,
    sourceType: 'module',
    project: './tsconfig.json',
  },
  plugins: ['@typescript-eslint', 'prettier'],
  rules: {
    'prettier/prettier': 2,
    'consistent-return': 0,
    'max-classes-per-file': 0,
    'import/prefer-default-export': 0,
    '@typescript-eslint/naming-convention': [
      'error',
      // variableLike - matches the same as variable, function and parameter
      {
        selector: 'variableLike',
        format: ['camelCase', 'PascalCase', 'UPPER_CASE'],
        leadingUnderscore: 'allow',
        trailingUnderscore: 'allow'
      },
      // typeLike - matches the same as class, interface, typeAlias, enum, typeParameter
      {
        selector: 'typeLike',
        format: ['PascalCase'],
      },
    ],
    //ignore extensions for importing files with .js and .ts extensions
    'import/extensions': [
      'error',
      'ignorePackages',
      {
        js: 'never',
        ts: 'never',
      },
    ],
  },
  settings: {
    'import/resolver': {
      node: {
        extensions: ['.js', '.ts'],
        moduleDirectory: ['src', 'node_modules'],
      },
      project: './tsconfig.json',
    },
  },
};