build(typescript-config): add shared vitest base config

packages/typescript-config/package.json

@@ -1,5 +1,13 @@
 {
   "name": "@repo/typescript-config",
   "private": true,
-  "version": "0.0.0"
+  "version": "0.0.0",
+  "type": "module",
+  "exports": {
+    "./base.json": "./base.json",
+    "./vitest.base": "./vitest.base.ts"
+  },
+  "devDependencies": {
+    "vitest": "^3.1.0"
+  }
 }

packages/typescript-config/vitest.base.ts

@@ -0,0 +1,15 @@
+import { defineConfig } from "vitest/config";
+
+export const baseVitestConfig = defineConfig({
+  test: {
+    globals: true,
+    environment: "node",
+    include: ["src/**/*.test.ts", "src/**/*.test.tsx", "tests/**/*.test.ts"],
+    coverage: {
+      provider: "v8",
+      reporter: ["text", "html"],
+      include: ["src/**"],
+      exclude: ["src/**/*.test.{ts,tsx}", "src/**/index.ts"],
+    },
+  },
+});