feat: bumped typescript-eslint to v6.0.0 (#601)

## PR Checklist

- [x] Addresses an existing open issue: fixes #600
- [x] That issue was marked as [`status: accepting
prs`](https://github.com/JoshuaKGoldberg/template-typescript-node-package/issues?q=is%3Aopen+is%3Aissue+label%3A%22status%3A+accepting+prs%22)
- [x] Steps in
[CONTRIBUTING.md](https://github.com/JoshuaKGoldberg/template-typescript-node-package/blob/main/.github/CONTRIBUTING.md)
were taken

## Overview

Bumps the version. I didn't see any need to tweak manual rules, just the
preset configs. And hey,
[`plugin:@typescript-eslint/no-confusing-void-expression`](https://typescript-eslint.io/rules/no-confusing-void-expression)
found an unnecessary `return` - nice!

Author: JoshuaKGoldberg

.eslintrc.cjs

@@ -31,7 +31,8 @@ module.exports = {
 		{
 			extends: [
 				"plugin:jsdoc/recommended-typescript-error",
-				"plugin:@typescript-eslint/recommended",
+				"plugin:@typescript-eslint/strict",
+				"plugin:@typescript-eslint/stylistic",
 			],
 			files: ["**/*.ts"],
 			parser: "@typescript-eslint/parser",
@@ -49,8 +50,8 @@ module.exports = {
 		{
 			excludedFiles: ["**/*.md/*.ts"],
 			extends: [
-				"plugin:@typescript-eslint/recommended-requiring-type-checking",
-				"plugin:@typescript-eslint/strict",
+				"plugin:@typescript-eslint/strict-type-checked",
+				"plugin:@typescript-eslint/stylistic-type-checked",
 			],
 			files: ["**/*.ts"],
 			parser: "@typescript-eslint/parser",
@@ -79,6 +80,12 @@ module.exports = {
 				"jsonc/sort-keys": "error",
 			},
 		},
+		{
+			files: ["*.jsonc"],
+			rules: {
+				"jsonc/no-comments": "off",
+			},
+		},
 		{
 			files: "**/*.test.ts",
 			rules: {

knip.jsonc

@@ -7,7 +7,16 @@
 		"script/*e2e.js"
 	],
 	"ignoreBinaries": ["dedupe", "gh"],
-	"ignoreDependencies": ["all-contributors-cli", "c8"],
+	"ignoreDependencies": [
+		// TODO: investigate if these are still flagged, and file issues if not
+		"all-contributors-cli",
+		"c8",
+
+		// https://github.com/webpro/knip/issues/154
+		"@typescript-eslint/eslint-plugin-strict-type-checked",
+		"@typescript-eslint/eslint-plugin-stylistic",
+		"@typescript-eslint/eslint-plugin-stylistic-type-checked"
+	],
 	"ignoreExportsUsedInFile": {
 		"interface": true,
 		"type": true

package.json

@@ -60,8 +60,8 @@
 		"@types/git-url-parse": "^9.0.1",
 		"@types/js-yaml": "^4.0.5",
 		"@types/prettier": "^2.7.2",
-		"@typescript-eslint/eslint-plugin": "^5.59.5",
-		"@typescript-eslint/parser": "^5.59.5",
+		"@typescript-eslint/eslint-plugin": "^6.0.0",
+		"@typescript-eslint/parser": "^6.0.0",
 		"@vitest/coverage-istanbul": "^0.33.0",
 		"all-contributors-cli": "^6.25.1",
 		"c8": "^8.0.0",

pnpm-lock.yaml

@@ -3,5 +3,5 @@ import { createStructure } from "./creation/index.js";
 import { writeStructureWorker } from "./writeStructureWorker.js";
 
 export async function writeStructure(values: HydrationInputValues) {
-	return await writeStructureWorker(await createStructure(values), ".");
+	await writeStructureWorker(await createStructure(values), ".");
 }