eslint.config.mjs

import jest from 'eslint-plugin-jest'
import typescriptEslint from '@typescript-eslint/eslint-plugin'
import globals from 'globals'
import tsParser from '@typescript-eslint/parser'
import path from 'node:path'
import { fileURLToPath } from 'node:url'
import js from '@eslint/js'
import { FlatCompat } from '@eslint/eslintrc'

const __filename = fileURLToPath(import.meta.url)
const __dirname = path.dirname(__filename)
const compat = new FlatCompat({
    baseDirectory: __dirname,
    recommendedConfig: js.configs.recommended,
    allConfig: js.configs.all
})

export default [
    ...compat.extends('plugin:github/recommended'),
    {
        files: ['src/**/*.ts'],

        plugins: {
            jest,
            '@typescript-eslint': typescriptEslint
        },

        languageOptions: {
            globals: {
                ...globals.node,
                ...jest.environments.globals.globals
            },

            parser: tsParser,
            ecmaVersion: 9,
            sourceType: 'module',

            parserOptions: {
                project: './tsconfig.json'
            }
        },

        rules: {
            'eslint-comments/no-use': 'off',
            'import/no-namespace': 'off',
            'no-unused-vars': 'off',
            '@typescript-eslint/no-unused-vars': 'error',

            '@typescript-eslint/explicit-member-accessibility': [
                'error',
                {
                    accessibility: 'no-public'
                }
            ],

            '@typescript-eslint/no-require-imports': 'error',
            '@typescript-eslint/array-type': 'error',
            '@typescript-eslint/await-thenable': 'error',
            camelcase: 'off',

            '@typescript-eslint/explicit-function-return-type': [
                'error',
                {
                    allowExpressions: true
                }
            ],

            '@typescript-eslint/no-array-constructor': 'error',
            '@typescript-eslint/no-empty-interface': 'error',
            '@typescript-eslint/no-explicit-any': 'error',
            '@typescript-eslint/no-extraneous-class': 'error',
            '@typescript-eslint/no-floating-promises': 'error',
            '@typescript-eslint/no-for-in-array': 'error',
            '@typescript-eslint/no-inferrable-types': 'error',
            '@typescript-eslint/no-misused-new': 'error',
            '@typescript-eslint/no-namespace': 'error',
            '@typescript-eslint/no-non-null-assertion': 'warn',
            '@typescript-eslint/no-unnecessary-qualifier': 'error',
            '@typescript-eslint/no-unnecessary-type-assertion': 'error',
            '@typescript-eslint/no-useless-constructor': 'error',
            '@typescript-eslint/no-var-requires': 'error',
            '@typescript-eslint/prefer-for-of': 'warn',
            '@typescript-eslint/prefer-function-type': 'warn',
            '@typescript-eslint/prefer-includes': 'error',
            '@typescript-eslint/prefer-string-starts-ends-with': 'error',
            '@typescript-eslint/promise-function-async': 'error',
            '@typescript-eslint/require-array-sort-compare': 'error',
            '@typescript-eslint/restrict-plus-operands': 'error',
            semi: 'off',
            '@typescript-eslint/unbound-method': 'error'
        }
    }
]