import globals from 'globals';
import { eslintJestRules } from '../rules/index.mjs';
import { defineKnownRules, type FlatConfig } from '../types/index.mjs';

export const eslintConfigForJest = (files?: readonly string[]): FlatConfig =>
  ({
    ...(files === undefined ? {} : { files }),
    languageOptions: {
      // https://github.com/sindresorhus/globals/blob/main/globals.json
      globals: {
        ...globals.es2021,
        ...globals.browser,
        ...globals.node,
        // using jest/prefer-importing-jest-globals
        // ...globals.jest,
      },
    },
    rules: defineKnownRules({
      ...eslintJestRules,
    }),
  }) as const;