Update browser requirements to es2022 (#2176)

Author: marcustyphoon

.eslintrc.yml

@@ -1,9 +1,9 @@
 ---
   root: true
   parserOptions:
-    ecmaVersion: 2018
+    ecmaVersion: 2022
   env:
-    es6: true
+    es2022: true
     browser: true
     jquery: true
     webextensions: true
@@ -50,7 +50,6 @@
       parserOptions:
         sourceType: module
   globals:
-    BigInt: readonly
     _: readonly
     moment: readonly
     XKit: writable

manifest.json

@@ -27,7 +27,7 @@
     "128": "icon.png"
   },
   "manifest_version": 2,
-  "minimum_chrome_version": "44.0",
+  "minimum_chrome_version": "103.0",
   "name": "New XKit",
   "author": "New XKit Team",
   "permissions": ["storage", "unlimitedStorage", "*://*.tumblr.com/*", "https://new-xkit.github.io/XKit/*", "https://cloud.new-xkit.com/*" ],
@@ -36,6 +36,7 @@
   "applications": {
     "gecko": {
       "id": "@new-xkit",
+      "strict_min_version": "115.0",
       "update_url": "https://new-xkit.github.io/XKit/Extensions/dist/page/FirefoxUpdate.json"
     }
   }

xkit.js

@@ -4391,7 +4391,7 @@ function show_message(title, msg, icon, buttons) {
 	});
 }
 
-function xkit_init_special() {
+async function xkit_init_special() {
 
 	$("body").html("");
 	document.title = "XKit";
@@ -4417,11 +4417,8 @@ function xkit_init_special() {
 
 	if (document.location.href.indexOf("/xkit_editor") !== -1) {
 		if (typeof(browser) !== 'undefined') {
-			var xhr = new XMLHttpRequest();
-			xhr.open('GET', browser.extension.getURL('editor.js'), false);
-			xhr.send(null);
 			try {
-				new Function(xhr.responseText + "\n//# sourceURL=xkit/editor.js")();
+				await import(browser.runtime.getURL("/editor.js"));
 				XKit.extensions.xkit_editor.run();
 			} catch (e) {
 				XKit.window.show("Can't launch XKit Editor", "<p>" + e.message + "</p>", "error", "<div id=\"xkit-close-message\" class=\"xkit-button default\">OK</div>");