✨ Upgrade to ESLint 9

.github/CODEOWNERS

@@ -1 +1 @@
-*.* @NatoBoram
+* @NatoBoram

.vscode/settings.json

@@ -10,6 +10,7 @@
 		"source.organizeImports": "always"
 	},
 	"editor.formatOnSave": true,
+	"eslint.useFlatConfig": true,
 	"explorer.fileNesting.patterns": {
 		"*.js": "${capture}.d.ts, ${capture}.d.ts.map, ${capture}.js.map, ${capture}.min.js, ${capture}.test.d.ts.map",
 		"*.ts": "${capture}.test.ts, ${capture}.test.ts.map",

README.md

@@ -24,9 +24,9 @@ The most gigachad project setup for TypeScript.
 
 ## Publishing
 
-This template offers a GitHub Workflow to help you automatically bump the version number, tag it, push it, and publish it to both NPM and the GitHub Package Registry on the click of a button.
+This template offers a GitHub Workflow to help you automatically bump the version number, tag it, push it, and publish it to both NPM, the GitHub Package Registry and in GitHub Releases on the click of a button.
 
-To make the `git push` work when signed commits are enforced (because you are a gigachad), you'll need to provide a SSH key.
+To make the `git push` work, you'll need to use a [Deploy Key](https://docs.github.com/en/authentication/connecting-to-github-with-ssh/managing-deploy-keys#deploy-keys).
 
 1. Genereate a SSH key with <https://docs.github.com/en/authentication/connecting-to-github-with-ssh/generating-a-new-ssh-key-and-adding-it-to-the-ssh-agent#generating-a-new-ssh-key>
 
@@ -37,6 +37,10 @@ To make the `git push` work when signed commits are enforced (because you are a
 2. Add the private key to your project's secrets at `/settings/secrets/actions/new` with the name `DEPLOY_KEY_PRIVATE`
 3. Add the public key to your project's variables at `/settings/variables/actions/new` with the name `DEPLOY_KEY_PUBLIC`
 4. Add the public key to your project's deploy keys at `/settings/keys`
+5. Add the public key to `.github/authorized_keys` in the format of `41898282+github-actions[bot]@users.noreply.github.com <DEPLOY_KEY_PUBLIC>` while replacing `<DEPLOY_KEY_PUBLIC>` with your public key
+6. Delete the key pair from your computer, never to be seen again
+
+The `.github/authorized_keys` is used to sign and verify the signature of the build artefact that is sent to GitHub Releases. If you want to skip this step, you can remove it from `.github/workflows/pnpm-publish.yaml`.
 
 To publish on NPM, you'll need to provide your NPM token.
 

eslint.config.js

@@ -0,0 +1,72 @@
+import eslint from "@eslint/js"
+import prettier from "eslint-config-prettier"
+import globals from "globals"
+import tseslint from "typescript-eslint"
+
+/* eslint-disable @typescript-eslint/no-unsafe-argument */
+/* eslint-disable @typescript-eslint/no-unsafe-member-access */
+
+export default tseslint.config(
+	{
+		languageOptions: {
+			globals: { ...globals.browser, ...globals.node },
+			parserOptions: { project: "./tsconfig.eslint.json" },
+		},
+	},
+
+	eslint.configs.recommended,
+	...tseslint.configs.strictTypeChecked,
+	...tseslint.configs.stylisticTypeChecked,
+	prettier,
+
+	{
+		rules: {
+			"@typescript-eslint/class-methods-use-this": [
+				"error",
+				{
+					ignoreClassesThatImplementAnInterface: true,
+					ignoreOverrideMethods: true,
+				},
+			],
+			"@typescript-eslint/consistent-type-exports": "error",
+			"@typescript-eslint/consistent-type-imports": [
+				"error",
+				{ fixStyle: "separate-type-imports" },
+			],
+			"@typescript-eslint/default-param-last": "error",
+			"@typescript-eslint/explicit-member-accessibility": [
+				"error",
+				{ accessibility: "no-public" },
+			],
+			"@typescript-eslint/method-signature-style": "error",
+			"@typescript-eslint/no-import-type-side-effects": "error",
+			"@typescript-eslint/no-unnecessary-qualifier": "error",
+			"@typescript-eslint/no-useless-empty-export": "error",
+			"@typescript-eslint/prefer-nullish-coalescing": [
+				"error",
+				{ ignorePrimitives: true },
+			],
+			"@typescript-eslint/prefer-readonly": "error",
+			"@typescript-eslint/prefer-regexp-exec": "error",
+			"@typescript-eslint/promise-function-async": [
+				"error",
+				{ checkArrowFunctions: false },
+			],
+			"@typescript-eslint/require-array-sort-compare": "error",
+			"@typescript-eslint/return-await": "error",
+			"@typescript-eslint/sort-type-constituents": "error",
+			"@typescript-eslint/switch-exhaustiveness-check": "error",
+			"func-style": ["error", "declaration"],
+		},
+	},
+	{
+		ignores: [
+			".pnpm-store/",
+			"dist/",
+			"docs/",
+			"node_modules/",
+			"package-lock.json",
+			"pnpm-lock.yaml",
+		],
+	},
+)

package.json

@@ -51,14 +51,15 @@
 		"test": "vitest"
 	},
 	"devDependencies": {
-		"@typescript-eslint/eslint-plugin": "^7.4.0",
-		"@typescript-eslint/parser": "^7.4.0",
-		"eslint": "^8.57.0",
+		"@eslint/js": "^9.1.1",
+		"eslint": "^9.1.1",
 		"eslint-config-prettier": "^9.1.0",
+		"globals": "^15.0.0",
 		"prettier": "^3.2.5",
 		"tsx": "^4.7.1",
 		"typedoc": "^0.25.12",
 		"typescript": "~5.4.3",
+		"typescript-eslint": "^7.7.1",
 		"vitest": "^1.4.0"
 	},
 	"type": "module",