chore: complete ESLint 10 config cleanup and unify stylistic plugins (#169)

- Update config references: recommended-flat → recommended
- Remove deprecated @stylistic/eslint-plugin-ts (merged into unified plugin)
- Migrate @stylistic/ts/* rules to @stylistic/*
- Bump typescript-eslint 8.56.0 → 8.58.0
- Bump @stylistic/eslint-plugin 5.9.0 → 5.10.0
- Bump eslint-plugin-tsdoc 0.5.0 → 0.5.2

Completes the ESLint 10 migration started by Dependabot PRs #168 and #161,
which only bumped package versions without updating configs.

Author: TheRealAgentK

eslint.config.mjs

@@ -5,7 +5,7 @@ export default [
     // Basic eslint rules
     eslint.configs.recommended,
     // Codestyle rules for JS
-    stylistic.configs["recommended-flat"],
+    stylistic.configs["recommended"],
     {
         languageOptions: {
             // Add node globals to ignore undefined

package-lock.json

@@ -18,18 +18,17 @@
   },
   "devDependencies": {
     "@eslint/js": "^10.0.1",
-    "@stylistic/eslint-plugin": "^5.9.0",
-    "@stylistic/eslint-plugin-ts": "^4.2.0",
+    "@stylistic/eslint-plugin": "^5.10.0",
     "@types/node": "^25.3.0",
     "eslint": "^10.1.0",
-    "eslint-plugin-tsdoc": "^0.5.0",
+    "eslint-plugin-tsdoc": "^0.5.2",
     "express": "^5.2.1",
     "http-terminator": "^3.2.0",
     "prettier": "^3.8.1",
     "tap": "^21.6.2",
     "ts-node": "^10.9.2",
     "typescript": "^5.9.2",
-    "typescript-eslint": "^8.56.0"
+    "typescript-eslint": "^8.58.0"
   },
   "dependencies": {
     "@types/aws-lambda": "^8.10.160",

package.json

@@ -2,17 +2,14 @@
 
 import eslint from '@eslint/js';
 import stylistic from '@stylistic/eslint-plugin';
-import stylisticTs from '@stylistic/eslint-plugin-ts';
 import tseslint from 'typescript-eslint';
 import tsdocPlugin from 'eslint-plugin-tsdoc';
 
 export default tseslint.config(
     // Basic eslint rules
     eslint.configs.recommended,
     // Codestyle rules for JS
-    stylistic.configs["recommended-flat"],
-    // Codestyle rules for TS
-    stylisticTs.configs["all-flat"],
+    stylistic.configs["recommended"],
     // Eslint rules for TS
     ...tseslint.configs.recommended,
     {
@@ -51,9 +48,9 @@ export default tseslint.config(
             // Stick to double quotes
             "@stylistic/quotes": ["error", "double"],
             // Always indent with two spaces
-            '@stylistic/ts/indent': ['error', 2],
+            "@stylistic/indent": ["error", 2],
             // Enforce curly braces spacing
-            "@stylistic/ts/object-curly-spacing": ["error", "always"],
+            "@stylistic/object-curly-spacing": ["error", "always"],
             // Enforce "one true brace style"
             "@stylistic/brace-style": ["error", "1tbs"],
             // Enforce parenthesis in functions: "(a) => a"
@@ -63,10 +60,9 @@ export default tseslint.config(
             "@stylistic/no-mixed-operators": ["off", 0],
             "@stylistic/operator-linebreak": ["off", 0],
             "@stylistic/quote-props": ["off", 0],
-            "@stylistic/ts/comma-dangle": ["off", 0],
-            "@stylistic/ts/no-extra-parens": ["off", 0],
-            "@stylistic/ts/quote-props": ["off", 0],
-            "@stylistic/ts/space-before-function-paren": ["off", 0],
+            "@stylistic/comma-dangle": ["off", 0],
+            "@stylistic/no-extra-parens": ["off", 0],
+            "@stylistic/space-before-function-paren": ["off", 0],
             // Documentation format check
             "tsdoc/syntax": "warn"
         }