.eslintrc.js

module.exports = {
    root: true,
    env: {
        es2021: true,
        node: true,
        jest: true,
    },
    extends: [
        'eslint:recommended',
        'plugin:@typescript-eslint/recommended-type-checked',
        'plugin:@typescript-eslint/stylistic-type-checked',
        'plugin:unicorn/recommended',
        'prettier',
    ],
    parser: '@typescript-eslint/parser',
    parserOptions: {
        tsconfigRootDir: __dirname,
        project: ['./tsconfig.lint.json'],
        sourceType: 'module',
    },

    rules: {
        'unicorn/filename-case': [
            'warn',
            {
                cases: {
                    camelCase: true,
                    pascalCase: true,
                },
            },
        ],
        'no-eval': 'error',

        'unicorn/no-fn-reference-in-iterator': 'off',
        'unicorn/no-array-for-each': 'off',
        'unicorn/no-null': 'off',
        'unicorn/prefer-array-some': 'off',
        'unicorn/consistent-destructuring': 'off',
        'unicorn/no-array-reduce': 'off',
        'unicorn/prefer-spread': 'off',
        'unicorn/no-array-callback-reference': 'off',

        'unicorn/consistent-function-scoping': 'off',
        'unicorn/no-useless-undefined': 'off',
        'unicorn/prefer-ternary': 'off',

        'unicorn/prefer-node-protocol': 'off',
        'unicorn/prevent-abbreviations': [
            'error',
            {
                allowList: { Param: true, Req: true, Res: true },
            },
        ],
        '@typescript-eslint/naming-convention': [
            'error',
            {
                selector: 'default',
                format: null,
            },
            {
                selector: 'variable',
                format: ['PascalCase', 'UPPER_CASE'],
                types: ['boolean'],
                prefix: ['is', 'should', 'has', 'can', 'did', 'will'],
            },
            {
                selector: 'variableLike',
                format: ['camelCase', 'UPPER_CASE', 'PascalCase'],
            },

            {
                selector: 'parameter',
                format: ['camelCase'],
            },
            {
                selector: 'memberLike',
                modifiers: ['private'],
                format: ['camelCase'],
                leadingUnderscore: 'forbid',
            },
            {
                selector: 'typeLike',
                format: ['PascalCase'],
            },
            {
                selector: 'property',
                modifiers: ['readonly'],
                format: ['PascalCase'],
            },
            {
                selector: 'enumMember',
                format: ['UPPER_CASE'],
            },
        ],
    },
    plugins: ['@typescript-eslint', 'prefer-arrow', 'unicorn'],
};