diff --git a/bun.lockb b/bun.lockb
index e68ce790..5ee10233 100755
Binary files a/bun.lockb and b/bun.lockb differ
diff --git a/bunfig.toml b/bunfig.toml
new file mode 100644
index 00000000..986e271a
--- /dev/null
+++ b/bunfig.toml
@@ -0,0 +1,2 @@
+[test]
+preload = "./happydom.ts"
\ No newline at end of file
diff --git a/happydom.ts b/happydom.ts
new file mode 100644
index 00000000..7f712d02
--- /dev/null
+++ b/happydom.ts
@@ -0,0 +1,3 @@
+import { GlobalRegistrator } from "@happy-dom/global-registrator";
+
+GlobalRegistrator.register();
diff --git a/lib/domains/character/CharacterFactory.test.tsx b/lib/domains/character/CharacterFactory.test.tsx
index 67ea26ca..7a996476 100644
--- a/lib/domains/character/CharacterFactory.test.tsx
+++ b/lib/domains/character/CharacterFactory.test.tsx
@@ -660,7 +660,7 @@ describe("CharacterFactory.duplicate", () => {
 
     const characterWithFakeIds = produce(defaultCharacter, (draft) => {
       draft.id = "1";
-      draft.pages.forEach((p) => {
+      draft.pages?.forEach((p) => {
         p.id = "1";
         p.rows.forEach((r) => {
           r.columns.forEach((c) => {
@@ -677,7 +677,7 @@ describe("CharacterFactory.duplicate", () => {
 
     const duplicate = CharacterFactory.duplicate(characterWithFakeIds);
     expect(duplicate.id).not.toBe("1");
-    duplicate.pages.forEach((p) => {
+    duplicate.pages?.forEach((p) => {
       expect(p.id).not.toBe("1");
       p.rows.forEach((r) => {
         r.columns.forEach((c) => {
diff --git a/lib/domains/character/CharacterFactory.tsx b/lib/domains/character/CharacterFactory.tsx
index 62f4a80c..e08660da 100644
--- a/lib/domains/character/CharacterFactory.tsx
+++ b/lib/domains/character/CharacterFactory.tsx
@@ -94,7 +94,8 @@ export const CharacterFactory = {
   resetAllIds(character: ICharacter): ICharacter {
     return produce(character, (draft) => {
       draft.id = Id.generate();
-      draft.pages.forEach((page) => {
+
+      draft.pages?.forEach((page) => {
         page.id = Id.generate();
         page.rows.forEach((row) => {
           row.columns.forEach((col) => {
diff --git a/package.json b/package.json
index bdd40bb5..76d67ff1 100644
--- a/package.json
+++ b/package.json
@@ -17,9 +17,7 @@
     "beta": "bun run build && bun run deploy:preview -- --alias beta",
     "tsc": "tsc --project tsconfig.json --incremental --noEmit",
     "lint": "eslint 'lib/**' --cache",
-    "test": "bun test watch",
-    "test:run": "bun test run",
-    "test:ui": "bun test watch --ui",
+    "test": "vitest",
     "int": "bun run build && concurrently \"cypress run\" \"bun run serve:build\" --success first --kill-others --names \"cypress,server\" ",
     "int:start": "concurrently \"cypress open\" \"bun run start\" --success first --kill-others --names \"cypress,server\" ",
     "tsc-and-lint": "bun run tsc && bun run lint",
@@ -70,6 +68,7 @@
     "uuid": "^9.0.0"
   },
   "devDependencies": {
+    "@happy-dom/global-registrator": "^11.0.2",
     "@storybook/addon-essentials": "^7.3.1",
     "@storybook/addon-interactions": "^7.3.1",
     "@storybook/addon-links": "^7.3.1",
@@ -89,7 +88,7 @@
     "@typescript-eslint/parser": "^6.3.0",
     "@vitejs/plugin-legacy": "^4.1.1",
     "@vitejs/plugin-react": "^4.0.4",
-    "@vitest/ui": "^0.34.1",
+    "bun-types": "^1.0.1",
     "chromatic": "^6.21.0",
     "concurrently": "^8.2.0",
     "cypress": "^12.17.3",
@@ -106,8 +105,7 @@
     "react-test-renderer": "^18.2.0",
     "storybook": "^7.3.1",
     "typescript": "^5.1.6",
-    "vite": "^4.4.9",
-    "vitest": "^0.34.1"
+    "vite": "^4.4.9"
   },
   "lint-staged": {
     "*.{js,ts,tsx}": "eslint --cache --fix",
diff --git a/tsconfig.json b/tsconfig.json
index d0c79830..b6de59df 100644
--- a/tsconfig.json
+++ b/tsconfig.json
@@ -14,7 +14,7 @@
         "name": "typescript-tslint-plugin"
       }
     ],
-    "types": ["vite/client", "vitest/globals"]
+    "types": ["bun-types", "vitest/globals"]
   },
   "include": ["lib/**/*", "stories/**/*"],
   "exclude": ["node_modules", "cypress"]