diff --git a/tslib/react/package-lock.json b/tslib/react/package-lock.json
index 1c53d463..c0fba30b 100644
--- a/tslib/react/package-lock.json
+++ b/tslib/react/package-lock.json
@@ -29,6 +29,7 @@
         "@storybook/react": "^8.0.4",
         "@storybook/react-vite": "^8.0.4",
         "@storybook/test": "^8.0.4",
+        "@testing-library/jest-dom": "^6.4.2",
         "@testing-library/react": "^14.2.2",
         "@types/plotly.js-dist-min": "^2.3.4",
         "@types/react": "^18.2.55",
diff --git a/tslib/react/package.json b/tslib/react/package.json
index 8780d543..545b3844 100644
--- a/tslib/react/package.json
+++ b/tslib/react/package.json
@@ -46,6 +46,7 @@
     "@storybook/react": "^8.0.4",
     "@storybook/react-vite": "^8.0.4",
     "@storybook/test": "^8.0.4",
+    "@testing-library/jest-dom": "^6.4.2",
     "@testing-library/react": "^14.2.2",
     "@types/plotly.js-dist-min": "^2.3.4",
     "@types/react": "^18.2.55",
diff --git a/tslib/react/test/PlotHistory.test.tsx b/tslib/react/test/PlotHistory.test.tsx
index 072a5ae9..d323f667 100644
--- a/tslib/react/test/PlotHistory.test.tsx
+++ b/tslib/react/test/PlotHistory.test.tsx
@@ -26,7 +26,9 @@ describe("PlotHistory Tests", async () => {
   for (const study of window.mockStudies) {
     test(`PlotHistory (studyId: ${study.study_id})`, () => {
       setup({ study, dataTestId: `plot-history-${study.study_id}` })
-      expect(screen.getByTestId(`plot-history-${study.study_id}`)).toBeTruthy()
+      expect(
+        screen.getByTestId(`plot-history-${study.study_id}`)
+      ).toBeInTheDocument()
     })
   }
 })
diff --git a/tslib/react/test/TrialTable.test.tsx b/tslib/react/test/TrialTable.test.tsx
index 0df91933..e041f3e3 100644
--- a/tslib/react/test/TrialTable.test.tsx
+++ b/tslib/react/test/TrialTable.test.tsx
@@ -26,7 +26,9 @@ describe("TrialTable Tests", async () => {
   for (const study of window.mockStudies) {
     test(`TrialTable (studyId: ${study.study_id})`, () => {
       setup({ study, dataTestId: `trial-table-${study.study_id}` })
-      expect(screen.getByTestId(`trial-table-${study.study_id}`)).toBeTruthy()
+      expect(
+        screen.getByTestId(`trial-table-${study.study_id}`)
+      ).toBeInTheDocument()
     })
   }
 })
diff --git a/tslib/react/test/tsconfig.json b/tslib/react/test/tsconfig.json
new file mode 100644
index 00000000..27d8dad1
--- /dev/null
+++ b/tslib/react/test/tsconfig.json
@@ -0,0 +1,22 @@
+{
+  "compilerOptions": {
+    "isolatedModules": true,
+    "skipLibCheck": true,
+    "strictNullChecks": true,
+    "moduleResolution": "Node",
+    "noUnusedLocals": true,
+    "noImplicitThis": true,
+    "alwaysStrict": true,
+    "noImplicitAny": true,
+    "lib": ["ES2020", "DOM", "DOM.Iterable"],
+    "module": "ESNext",
+    "esModuleInterop": true,
+    "allowSyntheticDefaultImports": true,
+    "target": "ES2020",
+    "strict": true,
+    "noUnusedParameters": true,
+    "noFallthroughCasesInSwitch": true,
+    "jsx": "react-jsx"
+  },
+  "include": ["**/*.ts", "**/*.tsx"]
+}
diff --git a/tslib/react/test/vitest_setup.ts b/tslib/react/test/vitest_setup.ts
new file mode 100644
index 00000000..a78f2b49
--- /dev/null
+++ b/tslib/react/test/vitest_setup.ts
@@ -0,0 +1,9 @@
+import "@testing-library/jest-dom/vitest"
+
+declare global {
+  namespace jest {
+    interface Matchers<R> {
+      toBeInTheDocument(): R
+    }
+  }
+}
diff --git a/tslib/react/vite.config.ts b/tslib/react/vite.config.ts
index 4ff53451..4a41b291 100644
--- a/tslib/react/vite.config.ts
+++ b/tslib/react/vite.config.ts
@@ -11,7 +11,7 @@ export default defineConfig({
   plugins: [react()],
   test: {
     environment: "jsdom",
-    setupFiles: ["./test/setup_studies.ts"],
+    setupFiles: ["./test/vitest_setup.ts", "./test/setup_studies.ts"],
   },
   optimizeDeps: {
     exclude: ["@sqlite.org/sqlite-wasm"],