Fix the upgrade for eslint 9.17.0.

eslint.config.mjs

@@ -0,0 +1,86 @@
+import typescriptEslint from "@typescript-eslint/eslint-plugin";
+import globals from "globals";
+import tsParser from "@typescript-eslint/parser";
+import path from "node:path";
+import { fileURLToPath } from "node:url";
+import js from "@eslint/js";
+import { FlatCompat } from "@eslint/eslintrc";
+
+const __filename = fileURLToPath(import.meta.url);
+const __dirname = path.dirname(__filename);
+const compat = new FlatCompat({
+    baseDirectory: __dirname,
+    recommendedConfig: js.configs.recommended,
+    allConfig: js.configs.all
+});
+
+export default [{
+    ignores: [
+        "**/.github/",
+        "**/.vscode-test/",
+        "**/node_modules/",
+        "**/dist/",
+        "**/docs/",
+        "**/out/",
+        "**/publish-book/",
+        "**/resources",
+        "**/webview-ui/",
+        "**/*.js",
+    ],
+}, ...compat.extends("eslint:recommended", "plugin:@typescript-eslint/recommended"), {
+    plugins: {
+        "@typescript-eslint": typescriptEslint,
+    },
+
+    languageOptions: {
+        globals: {
+            ...globals.node,
+            ...globals.mocha,
+        },
+
+        parser: tsParser,
+        ecmaVersion: 2020,
+        sourceType: "module",
+
+        parserOptions: {
+            project: "./tsconfig.json",
+        },
+    },
+
+    rules: {
+        "@typescript-eslint/naming-convention": ["error", {
+            selector: "variable",
+            format: ["camelCase", "UPPER_CASE"],
+            leadingUnderscore: "forbid",
+            trailingUnderscore: "forbid",
+        }],
+
+        "@typescript-eslint/no-unnecessary-boolean-literal-compare": "error",
+
+        "@typescript-eslint/no-unused-vars": ["error", {
+            ignoreRestSiblings: true,
+        }],
+
+        "@typescript-eslint/prefer-for-of": "error",
+        curly: ["error", "multi-line"],
+        eqeqeq: ["error", "always"],
+
+        "id-denylist": [
+            "error",
+            "any",
+            "Number",
+            "number",
+            "String",
+            "string",
+            "Boolean",
+            "boolean",
+            "Undefined",
+            "undefined",
+        ],
+
+        "no-underscore-dangle": "error",
+        "no-var": "error",
+        "prefer-const": "error",
+        "prefer-template": "error",
+    },
+}];