From 30a2da5e0a35bebe07c0a538820eaa70b7fa8e52 Mon Sep 17 00:00:00 2001
From: Florian Wilde <wilde.florian@gmail.com>
Date: Thu, 17 Sep 2026 19:43:50 +0200
Subject: [PATCH] chore: ESLint, Prettier und Vitest einrichten (#001)

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
---
 .editorconfig         | 12 ++++++++++++
 .gitattributes        |  5 +++++
 .prettierignore       |  6 ++++++
 .prettierrc.json      |  6 ++++++
 eslint.config.mjs     | 13 +++++++++++++
 tests/version.test.ts |  8 ++++++++
 vitest.config.mts     | 12 ++++++++++++
 7 files changed, 62 insertions(+)
 create mode 100644 .editorconfig
 create mode 100644 .gitattributes
 create mode 100644 .prettierignore
 create mode 100644 .prettierrc.json
 create mode 100644 eslint.config.mjs
 create mode 100644 tests/version.test.ts
 create mode 100644 vitest.config.mts

diff --git a/.editorconfig b/.editorconfig
new file mode 100644
index 0000000..8c52ff9
--- /dev/null
+++ b/.editorconfig
@@ -0,0 +1,12 @@
+root = true
+
+[*]
+charset = utf-8
+end_of_line = lf
+indent_style = space
+indent_size = 2
+insert_final_newline = true
+trim_trailing_whitespace = true
+
+[*.md]
+trim_trailing_whitespace = false
diff --git a/.gitattributes b/.gitattributes
new file mode 100644
index 0000000..28eafd3
--- /dev/null
+++ b/.gitattributes
@@ -0,0 +1,5 @@
+* text=auto eol=lf
+*.sh text eol=lf
+*.ico binary
+*.png binary
+*.pdf binary
diff --git a/.prettierignore b/.prettierignore
new file mode 100644
index 0000000..c9a1924
--- /dev/null
+++ b/.prettierignore
@@ -0,0 +1,6 @@
+.next
+node_modules
+coverage
+docs
+*.md
+package-lock.json
diff --git a/.prettierrc.json b/.prettierrc.json
new file mode 100644
index 0000000..5242053
--- /dev/null
+++ b/.prettierrc.json
@@ -0,0 +1,6 @@
+{
+  "semi": true,
+  "singleQuote": false,
+  "trailingComma": "all",
+  "printWidth": 110
+}
diff --git a/eslint.config.mjs b/eslint.config.mjs
new file mode 100644
index 0000000..0ad09f2
--- /dev/null
+++ b/eslint.config.mjs
@@ -0,0 +1,13 @@
+import { defineConfig, globalIgnores } from "eslint/config";
+import nextVitals from "eslint-config-next/core-web-vitals";
+import nextTs from "eslint-config-next/typescript";
+import prettier from "eslint-config-prettier/flat";
+
+const eslintConfig = defineConfig([
+  ...nextVitals,
+  ...nextTs,
+  prettier,
+  globalIgnores([".next/**", "out/**", "build/**", "coverage/**", "next-env.d.ts"]),
+]);
+
+export default eslintConfig;
diff --git a/tests/version.test.ts b/tests/version.test.ts
new file mode 100644
index 0000000..9891637
--- /dev/null
+++ b/tests/version.test.ts
@@ -0,0 +1,8 @@
+import { describe, expect, it } from "vitest";
+import { APP_VERSION } from "@/lib/version";
+
+describe("APP_VERSION", () => {
+  it("entspricht Semantic Versioning", () => {
+    expect(APP_VERSION).toMatch(/^\d+\.\d+\.\d+(-[0-9A-Za-z.-]+)?$/);
+  });
+});
diff --git a/vitest.config.mts b/vitest.config.mts
new file mode 100644
index 0000000..b9471b1
--- /dev/null
+++ b/vitest.config.mts
@@ -0,0 +1,12 @@
+import { fileURLToPath } from "node:url";
+import { defineConfig } from "vitest/config";
+
+export default defineConfig({
+  resolve: {
+    alias: { "@": fileURLToPath(new URL("./src", import.meta.url)) },
+  },
+  test: {
+    include: ["tests/**/*.test.ts", "src/**/*.test.ts"],
+    environment: "node",
+  },
+});