fix(typecheck): merge configs & temporarily disable source errors

vite.config.mts

@@ -1,3 +1,4 @@
+/// <reference types="vitest" />
 import react from "@vitejs/plugin-react";
 import { defineConfig } from "vite";
 
@@ -6,4 +7,19 @@ export default defineConfig({
   define: {
     "process.env": {},
   },
+  test: {
+    globals: true,
+    environment: "happy-dom",
+    setupFiles: ["./setup.ts"],
+    coverage: {
+      provider: "v8",
+      include: ["src/@(atoms|components|fields|hooks)"],
+      exclude: ["**/*.@(mock|stories|test-d).@(ts|tsx)"],
+    },
+    typecheck: {
+      // TODO(enable): Jest matchers have missing types for some reason
+      // https://github.com/vitest-dev/vitest/issues/5256#issuecomment-1980431555
+      ignoreSourceErrors: true,
+    },
+  },
 });