chore: migrate to ESLint v9 and relevant packages (#362)

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## PR Checklist

- [x] Addresses an existing open issue: fixes #361 
- [x] That issue was marked as [`status: accepting
prs`](https://github.com/JoshuaKGoldberg/release-it-action/issues?q=is%3Aopen+is%3Aissue+label%3A%22status%3A+accepting+prs%22)
- [x] Steps in
[CONTRIBUTING.md](https://github.com/JoshuaKGoldberg/release-it-action/blob/main/.github/CONTRIBUTING.md)
were taken

## Overview

- Support ESLint v9

README.md

@@ -83,9 +83,9 @@ import { releaseItAction } from "release-it-action";
 
 await releaseItAction({
 	branch: "main",
+	githubToken: process.env.GITHUB_TOKEN,
 	gitUserEmail: "[email protected]",
 	gitUserName: "YourUsername",
-	githubToken: process.env.GITHUB_TOKEN,
 	npmToken: process.env.NPM_TOKEN,
 	owner: "YourUsername",
 	repo: "your-repository",

cspell.json

@@ -20,6 +20,7 @@
 		"npmjs",
 		"npmpackagejsonlintrc",
 		"outro",
-		"packagejson"
+		"packagejson",
+		"tseslint"
 	]
 }

eslint.config.js

@@ -0,0 +1,98 @@
+import comments from "@eslint-community/eslint-plugin-eslint-comments/configs";
+import eslint from "@eslint/js";
+import vitest from "@vitest/eslint-plugin";
+import jsdoc from "eslint-plugin-jsdoc";
+import jsonc from "eslint-plugin-jsonc";
+import markdown from "eslint-plugin-markdown";
+import n from "eslint-plugin-n";
+import packageJson from "eslint-plugin-package-json/configs/recommended";
+import perfectionist from "eslint-plugin-perfectionist";
+import * as regexp from "eslint-plugin-regexp";
+import yml from "eslint-plugin-yml";
+import tseslint from "typescript-eslint";
+
+export default tseslint.config(
+	{
+		ignores: [
+			"**/*.snap",
+			"coverage",
+			"lib",
+			"node_modules",
+			"pnpm-lock.yaml",
+			"!.*",
+			"dist",
+		],
+	},
+	{ linterOptions: { reportUnusedDisableDirectives: "error" } },
+	eslint.configs.recommended,
+	comments.recommended,
+	jsdoc.configs["flat/contents-typescript-error"],
+	jsdoc.configs["flat/logical-typescript-error"],
+	jsdoc.configs["flat/stylistic-typescript-error"],
+	jsonc.configs["flat/recommended-with-json"],
+	markdown.configs.recommended,
+	n.configs["flat/recommended"],
+	packageJson,
+	perfectionist.configs["recommended-natural"],
+	regexp.configs["flat/recommended"],
+	{
+		extends: [
+			tseslint.configs.strictTypeChecked,
+			tseslint.configs.stylisticTypeChecked,
+		],
+		files: ["**/*.js", "**/*.ts"],
+		languageOptions: {
+			parserOptions: {
+				projectService: { allowDefaultProject: ["*.config.*s"] },
+				tsconfigRootDir: import.meta.dirname,
+			},
+		},
+		rules: {
+			// Stylistic concerns that don't interfere with Prettier
+			"logical-assignment-operators": [
+				"error",
+				"always",
+				{ enforceForIfStatements: true },
+			],
+			"n/no-missing-import": [
+				"error",
+				{
+					ignoreTypeImport: true,
+				},
+			],
+			"no-useless-rename": "error",
+			"object-shorthand": "error",
+			"operator-assignment": "error",
+		},
+		settings: { perfectionist: { partitionByComment: true, type: "natural" } },
+	},
+	{
+		extends: [tseslint.configs.disableTypeChecked],
+		files: ["**/*.md/*.ts"],
+		rules: {
+			"n/no-missing-import": ["error", { allowModules: ["release-it-action"] }],
+		},
+	},
+	{
+		extends: [vitest.configs.recommended],
+		files: ["**/*.test.*"],
+		rules: {
+			"@typescript-eslint/no-unsafe-assignment": "off",
+		},
+	},
+	{
+		extends: [yml.configs["flat/recommended"], yml.configs["flat/prettier"]],
+		files: ["**/*.{yml,yaml}"],
+		rules: {
+			"yml/file-extension": ["error", { extension: "yml" }],
+			"yml/sort-keys": [
+				"error",
+				{ order: { type: "asc" }, pathPattern: "^.*$" },
+			],
+			"yml/sort-sequence-values": [
+				"error",
+				{ order: { type: "asc" }, pathPattern: "^.*$" },
+			],
+		},
+	},
+);

package.json

@@ -23,7 +23,7 @@
 		"build": "tsc",
 		"build:release": "ncc build src/action/index.ts -o dist",
 		"format": "prettier \"**/*\" --ignore-unknown",
-		"lint": "eslint . .*js --max-warnings 0 --report-unused-disable-directives",
+		"lint": "eslint . --max-warnings 0",
 		"lint:knip": "knip",
 		"lint:md": "markdownlint \"**/*.md\" \".github/**/*.md\" --rules sentences-per-line",
 		"lint:package-json": "npmPkgJsonLint ./package.json",
@@ -44,29 +44,26 @@
 		"execa": "^8.0.1"
 	},
 	"devDependencies": {
-		"@octokit/types": "^13.0.0",
+		"@eslint-community/eslint-plugin-eslint-comments": "^4.4.1",
+		"@eslint/js": "^9.16.0",
+		"@octokit/types": "^13.6.2",
 		"@release-it/conventional-changelog": "^9.0.0",
-		"@types/eslint": "^8.44.3",
-		"@typescript-eslint/eslint-plugin": "^7.0.0",
-		"@typescript-eslint/parser": "^8.0.0",
+		"@types/eslint-plugin-markdown": "^2.0.2",
 		"@vercel/ncc": "^0.38.0",
 		"@vitest/coverage-v8": "^0.34.6",
+		"@vitest/eslint-plugin": "^1.1.14",
 		"console-fail-test": "^0.5.0",
 		"cspell": "^8.0.0",
-		"eslint": "^8.50.0",
-		"eslint-plugin-deprecation": "^3.0.0",
-		"eslint-plugin-eslint-comments": "^3.2.0",
-		"eslint-plugin-jsdoc": "^50.0.0",
-		"eslint-plugin-jsonc": "^2.9.0",
-		"eslint-plugin-markdown": "^3.0.1",
-		"eslint-plugin-n": "^17.0.0",
-		"eslint-plugin-no-only-tests": "^3.1.0",
-		"eslint-plugin-perfectionist": "^2.1.0",
-		"eslint-plugin-regexp": "^2.0.0",
-		"eslint-plugin-vitest": "^0.4.0",
-		"eslint-plugin-yml": "^1.9.0",
+		"eslint": "^9.16.0",
+		"eslint-plugin-jsdoc": "^50.6.0",
+		"eslint-plugin-jsonc": "^2.18.2",
+		"eslint-plugin-markdown": "^5.1.0",
+		"eslint-plugin-n": "^17.14.0",
+		"eslint-plugin-package-json": "^0.18.0",
+		"eslint-plugin-perfectionist": "^4.2.0",
+		"eslint-plugin-regexp": "^2.7.0",
+		"eslint-plugin-yml": "^1.16.0",
 		"husky": "^9.0.0",
-		"jsonc-eslint-parser": "^2.3.0",
 		"knip": "^5.0.0",
 		"lint-staged": "^15.0.0",
 		"markdownlint": "^0.36.0",
@@ -80,8 +77,8 @@
 		"sentences-per-line": "^0.2.1",
 		"should-semantic-release": "^0.3.0",
 		"typescript": "^5.2.2",
-		"vitest": "^0.34.6",
-		"yaml-eslint-parser": "^1.2.2"
+		"typescript-eslint": "^8.17.0",
+		"vitest": "^0.34.6"
 	},
 	"packageManager": "[email protected]",
 	"engines": {