Migrate ESLint to FlatConfig

eslint.config.mjs

@@ -0,0 +1,77 @@
+import globals from "globals";
+
+export default [
+	{
+		languageOptions: {
+			globals: {
+				...globals.browser,
+				sap: true,
+				jQuery: true,
+			},
+			ecmaVersion: 5,
+			sourceType: "script",
+		},
+
+		rules: {
+			"block-scoped-var": 1,
+
+			"brace-style": [
+				2,
+				"1tbs",
+				{
+					allowSingleLine: true,
+				},
+			],
+
+			"consistent-this": 2,
+			"no-div-regex": 2,
+			"no-floating-decimal": 2,
+			"no-self-compare": 2,
+			"no-mixed-spaces-and-tabs": [2, true],
+			"no-nested-ternary": 2,
+
+			"no-unused-vars": [
+				2,
+				{
+					vars: "all",
+					args: "none",
+				},
+			],
+
+			radix: 2,
+			"keyword-spacing": 2,
+			"space-unary-ops": 2,
+			"wrap-iife": [2, "any"],
+			camelcase: 1,
+			"consistent-return": 1,
+			"max-nested-callbacks": [1, 3],
+			"new-cap": 1,
+			"no-extra-boolean-cast": 1,
+			"no-lonely-if": 1,
+			"no-new": 1,
+			"no-new-wrappers": 1,
+			"no-redeclare": 1,
+			"no-unused-expressions": 1,
+			"no-use-before-define": [1, "nofunc"],
+			"no-warning-comments": 1,
+			strict: 1,
+
+			// This rule must be disabled as of ESLint 9. It's removed and causes issues when present.
+			// https://eslint.org/docs/latest/rules/valid-jsdoc
+			"valid-jsdoc": 0,
+
+			"default-case": 1,
+			"dot-notation": 0,
+			"eol-last": 0,
+			eqeqeq: 0,
+			"no-trailing-spaces": 0,
+			"no-underscore-dangle": 0,
+			quotes: 0,
+			"key-spacing": 0,
+			"comma-spacing": 0,
+			"no-multi-spaces": 0,
+			"no-shadow": 0,
+			"no-irregular-whitespace": 0,
+		},
+	},
+];

package.json

@@ -14,7 +14,12 @@
   },
   "devDependencies": {
     "@ui5/cli": "^3.11.0",
+<<<<<<< Updated upstream
     "eslint": "^9.8.0",
+=======
+    "eslint": "^8.57.0",
+    "globals": "^15.8.0",
+>>>>>>> Stashed changes
     "karma": "^6.4.3",
     "karma-chrome-launcher": "^3.2.0",
     "karma-coverage": "^2.2.1",