feat: init

vitest.config.ts

@@ -0,0 +1,15 @@
+import { defineConfig } from "vitest/config";
+
+export default defineConfig({
+  resolve: {
+    // ``obsidian`` is provided by the host app at runtime and has no
+    // installable implementation, so tests link against a stub.
+    alias: {
+      obsidian: new URL("./tests/obsidian-stub.ts", import.meta.url).pathname,
+    },
+  },
+  test: {
+    environment: "node",
+    include: ["tests/**/*.test.ts"],
+  },
+});