deps: Migrating to the new version of eslint

Author: Redume

eslint.config.js

@@ -0,0 +1,47 @@
+const {
+    defineConfig,
+    globalIgnores,
+} = require("eslint/config");
+
+const globals = require("globals");
+const js = require("@eslint/js");
+
+const {
+    FlatCompat,
+} = require("@eslint/eslintrc");
+
+const compat = new FlatCompat({
+    baseDirectory: __dirname,
+    recommendedConfig: js.configs.recommended,
+    allConfig: js.configs.all
+});
+
+module.exports = defineConfig([{
+    languageOptions: {
+        globals: {
+            ...globals.browser,
+            ...globals.node,
+        },
+
+        sourceType: "commonjs",
+        ecmaVersion: "latest",
+        parserOptions: {},
+    },
+
+    extends: compat.extends("eslint:recommended", "plugin:prettier/recommended"),
+
+    rules: {
+        indent: "off",
+        semi: ["error", "always"],
+        "arrow-body-style": ["error", "as-needed"],
+
+        "prettier/prettier": ["error", {
+            singleQuote: true,
+            parser: "flow",
+            tabWidth: 4,
+            endOfLine: "lf",
+        }],
+    },
+}, {
+    files: ["*/*.js"],
+}, globalIgnores(["**/.eslintrc.js"])]);