Bump eslint from 8.57.1 to 10.5.0 (#637)

* Bump eslint from 8.57.1 to 10.5.0

Bumps [eslint](https://github.com/eslint/eslint) from 8.57.1 to 10.5.0.
- [Release notes](https://github.com/eslint/eslint/releases)
- [Commits](eslint/eslint@v8.57.1...v10.5.0)

---
updated-dependencies:
- dependency-name: eslint
  dependency-version: 10.5.0
  dependency-type: direct:development
  update-type: version-update:semver-major
...

Signed-off-by: dependabot[bot] <support@github.com>

* Migrate ESLint config to flat config for v10

ESLint v9+ requires eslint.config.js and no longer supports .eslintrc.*,
and v10 removed the deprecated formatting rules from core. Migrate to flat
config:

- Replace .eslintrc.yml with eslint.config.js (ESM)
- Use @eslint/js for recommended config (string "eslint:recommended" refs
  are removed in v9+)
- Re-add formatting rules via @stylistic/eslint-plugin (1:1 mapping)
- Provide Node globals via the globals package
- Drop global-require/no-path-concat (Node-only rules removed from core,
  irrelevant to this ESM codebase)
- Fix 3 source issues flagged by v10's updated recommended set
  (no-useless-assignment, unused catch bindings)

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>

---------

Signed-off-by: dependabot[bot] <support@github.com>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>
Co-authored-by: Illia Antypenko <illia@antypenko.dev>
Co-authored-by: Claude Opus 4.8 (1M context) <noreply@anthropic.com>

Author: 3 people

.eslintrc.yml

@@ -0,0 +1,50 @@
+import js from '@eslint/js';
+import stylistic from '@stylistic/eslint-plugin';
+import globals from 'globals';
+
+export default [
+	js.configs.recommended,
+	{
+		files: ['lib/**/*.js', 'index.mjs'],
+		plugins: {
+			'@stylistic': stylistic
+		},
+		languageOptions: {
+			ecmaVersion: 2020,
+			sourceType: 'module',
+			globals: {
+				...globals.node,
+				...globals.mocha
+			}
+		},
+		rules: {
+			'consistent-return': 'error',
+			'curly': 'error',
+			'default-case': 'error',
+			'dot-notation': 'error',
+			'eqeqeq': 'error',
+			'no-extend-native': 'error',
+			'no-implicit-coercion': 'error',
+			'no-loop-func': 'error',
+			'no-throw-literal': 'error',
+			'camelcase': 'error',
+			'consistent-this': ['error', 'self'],
+			'func-names': 'warn',
+			'no-console': 'error',
+
+			'@stylistic/no-multi-spaces': 'error',
+			'@stylistic/brace-style': ['error', '1tbs', {allowSingleLine: true}],
+			'@stylistic/indent': ['error', 'tab', {SwitchCase: 1}],
+			'@stylistic/linebreak-style': ['error', 'unix'],
+			'@stylistic/eol-last': 'error',
+			'@stylistic/quotes': ['error', 'single'],
+			'@stylistic/semi': 'error',
+			'@stylistic/space-infix-ops': 'error',
+			'@stylistic/space-unary-ops': 'error',
+			'@stylistic/space-before-function-paren': 'warn',
+			'@stylistic/function-call-spacing': ['warn', 'never'],
+			'@stylistic/keyword-spacing': 'error',
+			'@stylistic/space-before-blocks': 'error'
+		}
+	}
+];

eslint.config.js

@@ -17,10 +17,9 @@ class Resource {
 
 	createChild (url, filename) {
 		const child = new Resource(url, filename);
-		let currentDepth = this.getDepth();
 
 		child.parent = this;
-		child.depth = ++currentDepth;
+		child.depth = this.getDepth() + 1;
 
 		this.children.push(child);
 

lib/resource.js

@@ -49,7 +49,7 @@ function getPathnameFromUrl (u) {
 	const pathname = url.parse(u).pathname;
 	try {
 		return decodeURI(pathname);
-	} catch (e) {
+	} catch {
 		return pathname;
 	}
 }
@@ -110,7 +110,7 @@ function sanitizeFilename (filename) {
 function normalizeUrl (u, opts) {
 	try {
 		return normalize(u, extend({removeTrailingSlash: false, stripHash: true}, opts));
-	} catch (e) {
+	} catch {
 		return u;
 	}
 }

lib/utils/index.js

@@ -11,7 +11,7 @@
   "scripts": {
     "test": "c8 --all --reporter=text --reporter=lcov mocha --recursive --timeout 7000 ./test/unit/ ./test/functional",
     "test-e2e": "mocha --timeout 300000 ./test/e2e/*-test.js",
-    "eslint": "eslint lib/** index.mjs"
+    "eslint": "eslint lib index.mjs"
   },
   "repository": {
     "type": "git",
@@ -48,9 +48,12 @@
     "srcset": "^5.0.0"
   },
   "devDependencies": {
+    "@eslint/js": "^10.0.1",
+    "@stylistic/eslint-plugin": "^5.10.0",
     "c8": "^11.0.0",
     "chai": "^6.2.0",
-    "eslint": "^8.5.0",
+    "eslint": "^10.5.0",
+    "globals": "^17.7.0",
     "mocha": "^11.0.1",
     "nock": "^14.0.0",
     "sinon": "^21.0.0"