feat: typescript-eslint@8 (#1595)

## PR Checklist

- [x] Addresses an existing open issue: fixes #1594 
- [x] That issue was marked as [`status: accepting
prs`](https://github.com/JoshuaKGoldberg/create-typescript-app/issues?q=is%3Aopen+is%3Aissue+label%3A%22status%3A+accepting+prs%22)
- [x] Steps in
[CONTRIBUTING.md](https://github.com/JoshuaKGoldberg/create-typescript-app/blob/main/.github/CONTRIBUTING.md)
were taken

## Overview

Also removes an unnecessary `"outDir": "lib"` from the `tsconfig.json`.
It's a holdover from when `tsc` was used to compile to the `lib/`
directory.

💖

Author: JoshuaKGoldberg

eslint.config.js

@@ -55,10 +55,11 @@ export default tseslint.config(
 		files: ["**/*.js", "**/*.ts"],
 		languageOptions: {
 			parserOptions: {
-				EXPERIMENTAL_useProjectService: {
-					allowDefaultProjectForFiles: ["./*.*s", "eslint.config.js"],
+				projectService: {
+					allowDefaultProject: ["*.config.*s", "bin/*.js", "script/*.ts"],
 					defaultProject: "./tsconfig.json",
 				},
+				tsconfigRootDir: import.meta.dirname,
 			},
 		},
 		rules: {

package.json

@@ -100,7 +100,7 @@
 		"tsup": "^8.1.0",
 		"tsx": "^4.9.0",
 		"typescript": "^5.5.2",
-		"typescript-eslint": "^7.7.0",
+		"typescript-eslint": "^8.0.0",
 		"vitest": "^2.0.2"
 	},
 	"engines": {

pnpm-lock.yaml

@@ -116,6 +116,15 @@ exports[`expected file changes > eslint.config.js 1`] = `
  import eslint from "@eslint/js";
  import comments from "@eslint-community/eslint-plugin-eslint-comments/configs";
  import jsdoc from "eslint-plugin-jsdoc";
+@@ ... @@ export default tseslint.config(
+ 		languageOptions: {
+ 			parserOptions: {
+ 				projectService: {
+-					allowDefaultProject: ["*.config.*s", "bin/*.js", "script/*.ts"],
++					allowDefaultProject: ["*.*s", "eslint.config.js"],
+ 					defaultProject: "./tsconfig.json",
+ 				},
+ 				tsconfigRootDir: import.meta.dirname,
 @@ ... @@ export default tseslint.config(
  			"no-constant-condition": "off",
  

script/__snapshots__/migrate-test-e2e.ts.snap

@@ -74,12 +74,12 @@ await fs.writeFile(
 		.replace(
 			/All Contributors: \d+/g,
 			// eslint-disable-next-line @typescript-eslint/no-non-null-assertion
-			originalReadme.match(/All Contributors: \d+/)![0],
+			/All Contributors: \d+/.exec(originalReadme)![0],
 		)
 		.replace(
 			/all_contributors-\d+/g,
 			// eslint-disable-next-line @typescript-eslint/no-non-null-assertion
-			originalReadme.match(/all_contributors-\d+/)![0],
+			/all_contributors-\d+/.exec(originalReadme)![0],
 		),
 );
 
@@ -90,12 +90,12 @@ await fs.writeFile(
 		.replace(
 			/All Contributors: \d+/g,
 			// eslint-disable-next-line @typescript-eslint/no-non-null-assertion
-			originalReadme.match(/All Contributors: \d+/)![0],
+			/All Contributors: \d+/.exec(originalReadme)![0],
 		)
 		.replace(
 			/all_contributors-\d+/g,
 			// eslint-disable-next-line @typescript-eslint/no-non-null-assertion
-			originalReadme.match(/all_contributors-\d+/)![0],
+			/all_contributors-\d+/.exec(originalReadme)![0],
 		),
 );
 

script/migrate-test-e2e.ts

@@ -8,8 +8,8 @@ export function readDefaultsFromDevelopment() {
 	);
 
 	const guideTag = lazyValue(async () =>
-		(await development()).match(
-			/> .*guided walkthrough, see \[((?!\[).+)\]\((.+)\)/i,
+		/> .*guided walkthrough, see \[((?!\[).+)\]\((.+)\)/i.exec(
+			await development(),
 		),
 	);
 

src/shared/options/createOptionDefaults/readDefaultsFromDevelopment.ts

@@ -6,7 +6,7 @@ export function readDefaultsFromReadme() {
 	const readme = lazyValue(async () => await readFileSafe("README.md", ""));
 
 	const imageTag = lazyValue(
-		async () => (await readme()).match(/<img.+src.+\/>/)?.[0],
+		async () => /<img.+src.+\/>/.exec(await readme())?.[0],
 	);
 
 	return {
@@ -15,8 +15,8 @@ export function readDefaultsFromReadme() {
 				?.match(/src\s*=(.+)?\/>/)?.[1]
 				?.replaceAll(/^['"]|['"]$/g, ""),
 		title: async () =>
-			(await readme())
-				.match(/^(?:# |<h1\s+align="center">)(.*?)(?:<\/h1>)?$/i)?.[1]
+			/^(?:# |<h1\s+align="center">)(.*?)(?:<\/h1>)?$/i
+				.exec(await readme())?.[1]
 				?.trim()
 				.replace(/<[^>]+(?:>|$)/g, ""),
 	};