.eslintrc.js

module.exports = {
    env: {
        es2020: true,
        node: true,
        'cypress/globals': true,
    },
    extends: [
        'airbnb-base',
        'eslint-config-prettier',
        'plugin:@typescript-eslint/eslint-recommended',
        'plugin:@typescript-eslint/recommended',
        'plugin:@typescript-eslint/recommended-requiring-type-checking',
        'prettier/@typescript-eslint',
        'plugin:cypress/recommended',
    ],
    parser: '@typescript-eslint/parser',
    parserOptions: {
        ecmaVersion: 11,
        sourceType: 'module',
        project: './tsconfig.json',
        tsconfigRootDir: __dirname,
    },
    plugins: ['@typescript-eslint', 'cypress', 'import', 'prettier'],
    rules: {
        // Prettier violations should generate warnings
        'prettier/prettier': 'warn',

        // Rules disabled because they don't add value
        'import/extensions': 0,
        'import/no-cycle': 1, // Too much to change
        'lines-between-class-members': 0,
        'no-case-declarations': 0,
        'no-undef-init': 0,
        'no-underscore-dangle': 0,
        '@typescript-eslint/camelcase': 0,
        '@typescript-eslint/ban-ts-ignore': 0,
        '@typescript-eslint/interface-name-prefix': 0,
        '@typescript-eslint/no-inferrable-types': 0,
        '@typescript-eslint/prefer-regexp-exec': 0,

        // Warnings that should be solved in order to enable the rules as errors
        'array-callback-return': 1,
        'consistent-return': 1,
        'default-case': 1,
        'dot-notation': 1,
        'guard-for-in': 1,
        'no-console': 1,
        'no-else-return': 1,
        'no-extra-boolean-cast': 1,
        'no-lonely-if': 1,
        'no-multi-str': 1,
        'no-nested-ternary': 1,
        'no-restricted-syntax': 1,
        'no-param-reassign': 1,
        'no-prototype-builtins': 1,
        'no-plusplus': 1,
        'no-sequences': 1,
        'no-shadow': 2,
        'no-unused-expressions': 1,
        'no-useless-return': 1,
        'import/export': 1,
        'import/first': 1,
        'import/named': 1,
        'import/newline-after-import': 1,
        'import/no-duplicates': 2,
        'import/no-extraneous-dependencies': [
            1,
            {
                devDependencies: true,
                optionalDependencies: false,
                peerDependencies: false,
                bundledDependencies: false,
            },
        ],
        'import/no-named-as-default': 1,
        'import/no-unresolved': 1,
        'import/no-useless-path-segments': 1,
        'import/prefer-default-export': 1,
        'import/order': 1,
        'object-shorthand': 1,
        'prefer-const': 2,
        'prefer-destructuring': 1,
        'prefer-template': 1,
        'prefer-spread': 1,
        'operator-assignment': 1,
        radix: 1,
        'spaced-comment': 1,
        '@typescript-eslint/ban-types': 1,
        '@typescript-eslint/explicit-function-return-type': 1,
        '@typescript-eslint/no-empty-interface': 1,
        '@typescript-eslint/no-explicit-any': 2,
        '@typescript-eslint/no-for-in-array': 2,
        '@typescript-eslint/no-namespace': 1,
        '@typescript-eslint/no-non-null-assertion': 1,
        '@typescript-eslint/no-misused-promises': 1,
        '@typescript-eslint/no-unnecessary-type-assertion': 2,
        '@typescript-eslint/no-unused-expressions': 2,
        '@typescript-eslint/no-unused-vars': 2,
        '@typescript-eslint/no-use-before-define': 2,
        '@typescript-eslint/prefer-includes': 1,
        '@typescript-eslint/unbound-method': 1,
        // Cypress specific rules
        'cypress/no-assigning-return-values': 2,
        'cypress/no-unnecessary-waiting': 2,
        'cypress/assertion-before-screenshot': 1,
        'cypress/no-force': 2,
        'cypress/no-async-tests': 2,
    },
    settings: {
        'import/resolver': {
            node: {
                extensions: ['.js', '.jsx', '.ts', '.tsx'],
            },
        },
    },
};