eslint.config.js

const parser = require('@typescript-eslint/parser');
const typescriptPlugin = require('@typescript-eslint/eslint-plugin');

module.exports = [
  {
    files: ['**/*.ts'],
    languageOptions: {
      parser: parser,
      parserOptions: {
        sourceType: 'module',
        project: './tsconfig.json',
        tsconfigRootDir: __dirname,
      },
    },
    plugins: {
      '@typescript-eslint': typescriptPlugin,
    },
    rules: {
      'no-extra-semi': 'off',
      'no-irregular-whitespace': ['error', {skipTemplates: true}],
      '@typescript-eslint/no-unused-vars': 'error',
      '@typescript-eslint/no-useless-constructor': 'error',
      '@typescript-eslint/explicit-function-return-type': [
        'warn',
        {
          allowExpressions: true,
          allowTypedFunctionExpressions: true,
        },
      ],
      '@typescript-eslint/no-floating-promises': 'error',
      '@typescript-eslint/await-thenable': 'error',
      eqeqeq: ['error', 'always', {null: 'ignore'}],
    },
  },
];