From 81c089ff7bf17d311cbeac485d6d113a1b3c0d85 Mon Sep 17 00:00:00 2001
From: Alexander Ebert <ebert@woltlab.com>
Date: Fri, 1 Nov 2024 16:59:45 +0100
Subject: [PATCH] Migrate ESLint to `eslint.config.mjs`

---
 .eslintignore     |  3 ---
 .eslintrc.js      | 46 --------------------------------
 eslint.config.mjs | 68 +++++++++++++++++++++++++++++++++++++++++++++++
 3 files changed, 68 insertions(+), 49 deletions(-)
 delete mode 100644 .eslintignore
 delete mode 100644 .eslintrc.js
 create mode 100644 eslint.config.mjs

diff --git a/.eslintignore b/.eslintignore
deleted file mode 100644
index 272756e586..0000000000
--- a/.eslintignore
+++ /dev/null
@@ -1,3 +0,0 @@
-**/*.js
-extra
-node_modules/**
diff --git a/.eslintrc.js b/.eslintrc.js
deleted file mode 100644
index 1c0a031b46..0000000000
--- a/.eslintrc.js
+++ /dev/null
@@ -1,46 +0,0 @@
-module.exports = {
-  root: true,
-  parser: "@typescript-eslint/parser",
-  parserOptions: {
-    tsconfigRootDir: __dirname,
-    project: [
-      "./tsconfig.json",
-      "./ts/WoltLabSuite/WebComponent/tsconfig.json"
-    ]
-  },
-  plugins: ["@typescript-eslint"],
-  extends: [
-    "eslint:recommended",
-    "plugin:@typescript-eslint/recommended",
-    "plugin:@typescript-eslint/recommended-requiring-type-checking",
-    "prettier"
-  ],
-  rules: {
-    "@typescript-eslint/ban-types": [
-      "error", {
-        types: {
-          "object": false
-        },
-        extendDefaults: true
-      }
-    ],
-    "@typescript-eslint/no-explicit-any": 0,
-    "@typescript-eslint/no-non-null-assertion": 0,
-    "@typescript-eslint/no-unsafe-argument": 0,
-    "@typescript-eslint/no-unsafe-assignment": 0,
-    "@typescript-eslint/no-unsafe-call": 0,
-    "@typescript-eslint/no-unsafe-member-access": 0,
-    "@typescript-eslint/no-unsafe-return": 0,
-    "@typescript-eslint/no-unused-vars": [
-      "error", {
-        "argsIgnorePattern": "^_",
-        "varsIgnorePattern": "^_"
-      }
-    ],
-    "@typescript-eslint/no-misused-promises": [
-      "error", {
-        "checksVoidReturn": false
-      }
-    ]
-  }
-};
diff --git a/eslint.config.mjs b/eslint.config.mjs
new file mode 100644
index 0000000000..a4c1326286
--- /dev/null
+++ b/eslint.config.mjs
@@ -0,0 +1,68 @@
+import typescriptEslint from "@typescript-eslint/eslint-plugin";
+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 [
+	{
+		ignores: ["**/*.js", "**/extra", "node_modules/**/*", "eslint.config.mjs"],
+	},
+	...compat.extends(
+		"eslint:recommended",
+		"plugin:@typescript-eslint/recommended",
+		"plugin:@typescript-eslint/recommended-requiring-type-checking",
+		"prettier",
+	),
+	{
+		plugins: {
+			"@typescript-eslint": typescriptEslint,
+		},
+
+		languageOptions: {
+			parser: tsParser,
+			ecmaVersion: 5,
+			sourceType: "script",
+
+			parserOptions: {
+				tsconfigRootDir: __dirname,
+				project: ["./tsconfig.json", "./ts/WoltLabSuite/WebComponent/tsconfig.json"],
+			},
+		},
+
+		rules: {
+			"@typescript-eslint/no-explicit-any": 0,
+			"@typescript-eslint/no-non-null-assertion": 0,
+			"@typescript-eslint/no-unsafe-argument": 0,
+			"@typescript-eslint/no-unsafe-assignment": 0,
+			"@typescript-eslint/no-unsafe-call": 0,
+			"@typescript-eslint/no-unsafe-member-access": 0,
+			"@typescript-eslint/no-unsafe-return": 0,
+
+			"@typescript-eslint/no-unused-vars": [
+				"error",
+				{
+					argsIgnorePattern: "^_",
+					varsIgnorePattern: "^_",
+				},
+			],
+
+			"@typescript-eslint/no-misused-promises": [
+				"error",
+				{
+					checksVoidReturn: false,
+				},
+			],
+			"@typescript-eslint/prefer-promise-reject-errors": ["error", { allowEmptyReject: true }],
+		},
+	},
+];
-- 
2.20.1