Upgrade to eslint 9

eslint.config.js

@@ -0,0 +1,33 @@
+import globals from "globals";
+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 [
+ ...compat.extends("eslint:recommended", "prettier"),
+ {
+ languageOptions: {
+ globals: {
+ ...globals.node,
+ },
+
+ ecmaVersion: "latest",
+ sourceType: "module",
+ },
+
+ rules: {
+ "no-async-promise-executor": "warn",
+ "no-prototype-builtins": "warn",
+ "no-unused-vars": "warn",
+ },
+ },
+];

package.json

@@ -79,15 +79,18 @@
  "@11ty/eleventy-img": "^5.0.0-beta.1",
  "@11ty/eleventy-plugin-rss": "^2.0.1",
  "@11ty/eleventy-plugin-syntaxhighlight": "^5.0.0",
+ "@eslint/eslintrc": "^3.1.0",
+ "@eslint/js": "^9.5.0",
  "@iarna/toml": "^2.2.5",
  "@mdx-js/node-loader": "^3.0.1",
  "@vue/server-renderer": "^3.4.30",
  "@zachleat/noop": "^1.0.3",
  "ava": "^6.1.3",
  "c8": "^10.1.2",
  "cross-env": "^7.0.3",
- "eslint": "^8.57.0",
+ "eslint": "^9.5.0",
  "eslint-config-prettier": "^9.1.0",
+ "globals": "^15.6.0",
  "husky": "^9.0.11",
  "js-yaml": "^4.1.0",
  "jsdoc": "^4.0.3",

src/TemplateMap.js

@@ -1,5 +1,3 @@
-/* eslint-disable indent */
-
 import { DepGraph as DependencyGraph } from "dependency-graph";
 import { isPlainObject } from "@11ty/eleventy-utils";
 import debugUtil from "debug";
@@ -76,7 +74,6 @@ class TemplateMap {
  return str.slice("collections.".length);
  }
  // Fixes #2851
- // eslint-disable-next-line quotes
  if (str.startsWith("collections['") || str.startsWith('collections["')) {
  return str.slice("collections['".length, -2);
  }