[INTERNAL] Adjust .eslintrc.json to best practice (#208)

Follow-up of
#207 (comment)

---------

Co-authored-by: Matthias Osswald <[email protected]>

Author: flovogt

.eslintrc.json

@@ -1,12 +1,11 @@
 {
 	"env": {
 		"browser": true,
-		"es2022": "true"
+		"es2022": true
 	},
 	"extends": "eslint:recommended",
 	"globals": {
-		"sap": true,
-		"jQuery": true
+		"sap": "readonly"
 	},
 	"rules": {
 		"brace-style": [2, "1tbs", { "allowSingleLine": true }],

karma-ci.conf.js

@@ -1,6 +1,6 @@
+/* eslint-env node */
+"use strict";
 module.exports = function(config) {
-	"use strict";
-
 	require("./karma.conf")(config);
 	config.set({
 

karma.conf.js

@@ -1,6 +1,6 @@
+/* eslint-env node */
+"use strict";
 module.exports = function(config) {
-	"use strict";
-
 	const chromeFlags = [
 		"--window-size=1280,1024"
 	];