Add tests

vitest.config.ts

@@ -0,0 +1,27 @@
+import {resolve} from "path"
+import {defineConfig} from "vitest/config"
+
+export default defineConfig({
+  test: {
+    environment: "happy-dom",
+    include: ["packages/**/*.test.ts"],
+    coverage: {
+      provider: "v8",
+      reporter: ["text", "json", "html"],
+    },
+    globals: true,
+  },
+  resolve: {
+    alias: {
+      "@welshman/app": resolve(__dirname, "packages/app/src"),
+      "@welshman/content": resolve(__dirname, "packages/content/src"),
+      "@welshman/dvm": resolve(__dirname, "packages/dvm/src"),
+      "@welshman/feeds": resolve(__dirname, "packages/feeds/src"),
+      "@welshman/lib": resolve(__dirname, "packages/lib/src"),
+      "@welshman/net": resolve(__dirname, "packages/net/src"),
+      "@welshman/signer": resolve(__dirname, "packages/signer/src"),
+      "@welshman/store": resolve(__dirname, "packages/store/src"),
+      "@welshman/util": resolve(__dirname, "packages/util/src"),
+    },
+  },
+})