import globals from "globals";
import js from "@eslint/js";
import tsEslint from "typescript-eslint";
import prettier from "eslint-plugin-prettier";
import eslintConfigPrettier from "eslint-config-prettier";

const jsRules = {
    eqeqeq: ["warn", "always"],
    "max-depth": ["warn", 3],
    "no-empty": "off",
    "no-unused-vars": "off"
};

export default [
   {
        rules: js.configs.recommended.rules
   },
   {
        files: ["dist/*.js"],
        rules: jsRules
   },
   {
        files: ["src/**/*.ts", "tests/**/*.ts"],
        languageOptions: {
            globals: {
                ...globals.node
            },
            parser: tsEslint.parser,
            sourceType: "commonjs",
            ecmaVersion: 5,
            parserOptions: {
                project: ["./tsconfig.test.json"]
            }
        },
        plugins: {
            prettier: prettier,
            "@typescript-eslint": tsEslint.plugin
        },
        rules: {
            ...jsRules,
            ...tsEslint.configs.recommended.map((config) => ({
                ...config.rules,                                                       <--- this doesn't work
            })),
            ...prettier.configs.recommended.rules,
            "prettier/prettier": [
                "warn", {
                    semi: true,
                    trailingComma: "all",
                    singleQuote: true,
                    printWidth: 120,
                    tabWidth: 2,
                    useTabs: false,
                    quoteProps: "preserve"
                }
            ],
            "@typescript-eslint/explicit-function-return-type": "warn",
            "@typescript-eslint/no-unused-vars": "warn"
        },
    },
    eslintConfigPrettier
];