[Web] Update to eslint 9

modules/webxr/native/library_godot_webxr.js

@@ -292,7 +292,7 @@ const GodotWebXR = {
 			GodotWebXR.gl = gl;
 
 			gl.makeXRCompatible().then(function () {
-				GodotWebXR.gl_binding = new XRWebGLBinding(session, gl); // eslint-disable-line no-undef
+				GodotWebXR.gl_binding = new XRWebGLBinding(session, gl);
 
 				// This will trigger the layer to get created.
 				GodotWebXR.getLayer();

platform/web/eslint.config.mjs

@@ -0,0 +1,115 @@
+import globals from "globals";
+import pluginJs from "@eslint/js";
+import pluginReference from "eslint-plugin-html";
+
+export default [
+	pluginJs.configs.recommended,
+	// pluginJs.configs.all,
+
+	{
+		rules: {
+			"indent": ["error", "tab"],
+			"curly": ["error", "all"],
+			"quote-props": ["error", "consistent"],
+			"no-self-assign": "off",
+			"no-unused-vars": ["error", { "args": "none", "caughtErrors": "none" }],
+			"no-console": "error",
+			"no-eval": "error",
+			"no-shadow": "error",
+			"strict": ["error", "safe"],
+			"no-alert": "error",
+		},
+	},
+
+	{
+		files: ["platform/web/js/engine/**/*.js"],
+		languageOptions: {
+			globals: {
+				...globals.browser,
+				"Features": true,
+				"Godot": true,
+				"InternalConfig": true,
+				"Preloader": true,
+			},
+		},
+	},
+
+	{
+		files: ["platform/web/js/jsdoc2rst/**/*.js"],
+		languageOptions: {
+			globals: globals.node,
+		},
+	},
+
+	{
+		files: [
+			"platform/web/js/libs/**/*.js",
+			"modules/**/*.js",
+		],
+		languageOptions: {
+			globals: {
+				...globals.browser,
+				"autoAddDeps": true,
+				"Browser": true,
+				"ERRNO_CODES": true,
+				"FS": true,
+				"GL": true,
+				"GodotConfig": true,
+				"GodotEventListeners": true,
+				"GodotFS": true,
+				"GodotOS": true,
+				"GodotRuntime": true,
+				"HEAP32": true,
+				"HEAP8": true,
+				"HEAPF32": true,
+				"HEAPU8": true,
+				"IDBFS": true,
+				"IDHandler": true,
+				"LibraryManager": true,
+				"mergeInto": true,
+				"XRWebGLLayer": true,
+			},
+		},
+	},
+
+	{
+		files: ["misc/dist/html/**/*.js"],
+		languageOptions: {
+			globals: {
+				...globals.browser,
+				"___GODOT_CACHE___": true,
+				"___GODOT_ENSURE_CROSSORIGIN_ISOLATION_HEADERS___": true,
+				"___GODOT_OPT_CACHE___": true,
+				"onClientMessage": true,
+			},
+		},
+	},
+
+	{
+		files: ["misc/dist/html/**/*.html"],
+		plugins: {
+			"eslint-plugin-html": pluginReference,
+		},
+		languageOptions: {
+			globals: {
+				...globals.browser,
+				"Engine": true,
+				"$GODOT_CONFIG": true,
+				"$GODOT_PROJECT_NAME": true,
+				"$GODOT_THREADS_ENABLED": true,
+				"___GODOT_THREADS_ENABLED___": true,
+			}
+		},
+		rules: {
+			"no-console": "off",
+			"no-alert": "off",
+		},
+	},
+
+	{
+		ignores: [
+			"platform/web/eslint.config.mjs",
+			"**/*.externs.js",
+		],
+	},
+];

platform/web/js/engine/features.js

@@ -1,4 +1,4 @@
-const Features = { // eslint-disable-line no-unused-vars
+const Features = {
 	/**
 	 * Check whether WebGL is available. Optionally, specify a particular version of WebGL to check for.
 	 *