.eslintrc.js

// http://eslint.org/docs/user-guide/configuring

module.exports = {
  root: true,
  env: {
    browser: true,
    node: true,
    es6: true,
    jquery: true,
  },
  globals: {
    google: true,
    document: true,
    navigator: false,
    window: true,
    prestashop: true,
  },
  parserOptions: {
    parser: '@typescript-eslint/parser',
  },
  extends: ['prestashop', 'plugin:@typescript-eslint/eslint-recommended', 'plugin:@typescript-eslint/recommended', 'plugin:jest/recommended'],
  plugins: ['import', '@typescript-eslint', 'jest'],
  rules: {
    'class-methods-use-this': 0,
    'func-names': 0,
    'import/no-extraneous-dependencies': [
      'error',
      {
        devDependencies: ['tests/**/*.js', '.webpack/**/*.js'],
      },
    ],
    'max-len': ['error', {code: 120}],
    'no-alert': 0,
    'no-bitwise': 0,
    'no-new': 0,
    'max-classes-per-file': 0,
    'no-param-reassign': ['error', {props: false}],
    'no-restricted-globals': [
      'error',
      {
        name: 'global',
        message: 'Use window variable instead.',
      },
    ],
    'prefer-destructuring': ['error', {object: true, array: false}],
    'no-shadow': 'off',
    '@typescript-eslint/no-shadow': ['error'],
  },
  settings: {
    'import/resolver': 'webpack',
  },
  env: {
    'jest/globals': true,
  },
  overrides: [
    {
      files: ['*.ts'],
      rules: {
        'no-undef': 'off',
      },
    },
  ],
};