Move from Create React to Vite

CLAUDE.md

@@ -45,7 +45,7 @@ All API routes are prefixed `/api/v1`. The Go binary serves the compiled React a
 
 ### React Frontend
 
-Standard CRA layout in `web/src/`:
+Vite + React + TypeScript in `web/src/`. Tests use Vitest with jsdom.
 
 - `api.ts` — typed fetch wrapper; reads JWT from `localStorage`, prefixes `BASE = '/api/v1'`
 - `auth.tsx` — `AuthProvider` context; decodes the JWT payload to expose `role` and `volunteerID`

Dockerfile

@@ -19,7 +19,7 @@ FROM alpine:3.21
 RUN apk add --no-cache ca-certificates tzdata
 WORKDIR /app
 COPY --from=backend /walkies ./walkies
-COPY --from=frontend /app/web/build ./web/dist
+COPY --from=frontend /app/web/dist ./web/dist
 EXPOSE 8080
 ENV STATIC_DIR=/app/web/dist
 CMD ["./walkies"]

Taskfile.yml

@@ -3,7 +3,7 @@ version: '3'
 vars:
   BINARY: walkies
   WEB_DIR: web
-  STATIC_DIR: "{{.WEB_DIR}}/build"
+  STATIC_DIR: "{{.WEB_DIR}}/dist"
 
 tasks:
   default:
@@ -31,14 +31,16 @@ tasks:
       - public/**/*
       - package.json
       - tsconfig.json
+      - vite.config.ts
+      - index.html
     generates:
-      - build/**/*
+      - dist/**/*
 
   web:dev:
     desc: Start frontend dev server (hot reload on :3000)
     dir: "{{.WEB_DIR}}"
     deps: [web:install]
-    cmd: npm start
+    cmd: npm run dev
 
   web:test:
     desc: Run frontend tests
@@ -121,7 +123,7 @@ tasks:
     desc: Remove build artifacts
     cmds:
       - rm -f {{.BINARY}}
-      - rm -rf {{.WEB_DIR}}/build
+      - rm -rf {{.WEB_DIR}}/dist
 
   tidy:
     desc: Tidy Go modules

web/.gitignore

@@ -1,15 +1,11 @@
-# See https://help.github.com/articles/ignoring-files/ for more about ignoring files.
-
 # dependencies
 /node_modules
-/.pnp
-.pnp.js
 
 # testing
 /coverage
 
 # production
-/build
+/dist
 
 # misc
 .DS_Store
@@ -19,5 +15,3 @@
 .env.production.local
 
 npm-debug.log*
-yarn-debug.log*
-yarn-error.log*

web/README.md

@@ -1,46 +1,21 @@
-# Getting Started with Create React App
+# Walkies Frontend
 
-This project was bootstrapped with [Create React App](https://github.com/facebook/create-react-app).
+React + TypeScript frontend built with [Vite](https://vite.dev/). Tests run with [Vitest](https://vitest.dev/).
 
 ## Available Scripts
 
-In the project directory, you can run:
+### `npm run dev`
 
-### `npm start`
-
-Runs the app in the development mode.\
-Open [http://localhost:3000](http://localhost:3000) to view it in the browser.
-
-The page will reload if you make edits.\
-You will also see any lint errors in the console.
+Starts the development server on [http://localhost:3000](http://localhost:3000) with hot module replacement. API requests to `/api` are proxied to `http://localhost:8080`.
 
 ### `npm test`
 
-Launches the test runner in the interactive watch mode.\
-See the section about [running tests](https://facebook.github.io/create-react-app/docs/running-tests) for more information.
+Runs all tests once using Vitest with jsdom.
 
 ### `npm run build`
 
-Builds the app for production to the `build` folder.\
-It correctly bundles React in production mode and optimizes the build for the best performance.
+Type-checks with `tsc` then builds the app for production into the `dist` folder.
 
-The build is minified and the filenames include the hashes.\
-Your app is ready to be deployed!
+### `npm run preview`
 
-See the section about [deployment](https://facebook.github.io/create-react-app/docs/deployment) for more information.
-
-### `npm run eject`
-
-**Note: this is a one-way operation. Once you `eject`, you can’t go back!**
-
-If you aren’t satisfied with the build tool and configuration choices, you can `eject` at any time. This command will remove the single build dependency from your project.
-
-Instead, it will copy all the configuration files and the transitive dependencies (webpack, Babel, ESLint, etc) right into your project so you have full control over them. All of the commands except `eject` will still work, but they will point to the copied scripts so you can tweak them. At this point you’re on your own.
-
-You don’t have to ever use `eject`. The curated feature set is suitable for small and middle deployments, and you shouldn’t feel obligated to use this feature. However we understand that this tool wouldn’t be useful if you couldn’t customize it when you are ready for it.
-
-## Learn More
-
-You can learn more in the [Create React App documentation](https://facebook.github.io/create-react-app/docs/getting-started).
-
-To learn React, check out the [React documentation](https://reactjs.org/).
+Serves the production build locally for previewing.

web/index.html

@@ -0,0 +1,18 @@
+<!DOCTYPE html>
+<html lang="en">
+  <head>
+    <meta charset="utf-8" />
+    <link rel="icon" href="/favicon.ico" />
+    <meta name="viewport" content="width=device-width, initial-scale=1" />
+    <meta name="theme-color" content="#000000" />
+    <meta name="description" content="Walkies - Volunteer scheduling" />
+    <link rel="apple-touch-icon" href="/logo192.png" />
+    <link rel="manifest" href="/manifest.json" />
+    <title>Walkies</title>
+  </head>
+  <body>
+    <noscript>You need to enable JavaScript to run this app.</noscript>
+    <div id="root"></div>
+    <script type="module" src="/src/main.tsx"></script>
+  </body>
+</html>

web/package.json

@@ -2,52 +2,31 @@
   "name": "web",
   "version": "0.1.0",
   "private": true,
+  "type": "module",
   "dependencies": {
+    "react": "^19.2.4",
+    "react-dom": "^19.2.4",
+    "react-router-dom": "^7.13.1"
+  },
+  "scripts": {
+    "dev": "vite",
+    "build": "tsc -b tsconfig.app.json && vite build",
+    "preview": "vite preview",
+    "test": "vitest run"
+  },
+  "devDependencies": {
     "@testing-library/dom": "^10.4.1",
     "@testing-library/jest-dom": "^6.9.1",
     "@testing-library/react": "^16.3.2",
-    "@testing-library/user-event": "^13.5.0",
-    "@types/jest": "^27.5.2",
-    "@types/node": "^16.18.126",
+    "@testing-library/user-event": "^14.6.1",
+    "@types/node": "^25.5.2",
     "@types/react": "^19.2.14",
     "@types/react-dom": "^19.2.3",
-    "@types/react-router-dom": "^5.3.3",
-    "react": "^19.2.4",
-    "react-dom": "^19.2.4",
-    "react-router-dom": "^7.13.1",
-    "react-scripts": "5.0.1",
-    "typescript": "^4.9.5",
-    "web-vitals": "^2.1.4"
-  },
-  "scripts": {
-    "start": "react-scripts start",
-    "build": "react-scripts build",
-    "test": "react-scripts test",
-    "eject": "react-scripts eject"
-  },
-  "eslintConfig": {
-    "extends": [
-      "react-app",
-      "react-app/jest"
-    ]
-  },
-  "jest": {
-    "moduleNameMapper": {
-      "^react-router-dom$": "<rootDir>/node_modules/react-router-dom/dist/index.js",
-      "^react-router$": "<rootDir>/node_modules/react-router/dist/development/index.js",
-      "^react-router/dom$": "<rootDir>/node_modules/react-router/dist/development/dom-export.js"
-    }
-  },
-  "browserslist": {
-    "production": [
-      ">0.2%",
-      "not dead",
-      "not op_mini all"
-    ],
-    "development": [
-      "last 1 chrome version",
-      "last 1 firefox version",
-      "last 1 safari version"
-    ]
+    "@vitejs/plugin-react": "^6.0.1",
+    "@vitest/coverage-v8": "^4.1.4",
+    "jsdom": "^29.0.2",
+    "typescript": "^6.0.2",
+    "vite": "^8.0.8",
+    "vitest": "^4.1.4"
   }
 }

web/public/index.html

@@ -1,43 +0,0 @@
-<!DOCTYPE html>
-<html lang="en">
-  <head>
-    <meta charset="utf-8" />
-    <link rel="icon" href="%PUBLIC_URL%/favicon.ico" />
-    <meta name="viewport" content="width=device-width, initial-scale=1" />
-    <meta name="theme-color" content="#000000" />
-    <meta
-      name="description"
-      content="Web site created using create-react-app"
-    />
-    <link rel="apple-touch-icon" href="%PUBLIC_URL%/logo192.png" />
-    <!--
-      manifest.json provides metadata used when your web app is installed on a
-      user's mobile device or desktop. See https://developers.google.com/web/fundamentals/web-app-manifest/
-    -->
-    <link rel="manifest" href="%PUBLIC_URL%/manifest.json" />
-    <!--
-      Notice the use of %PUBLIC_URL% in the tags above.
-      It will be replaced with the URL of the `public` folder during the build.
-      Only files inside the `public` folder can be referenced from the HTML.
-
-      Unlike "/favicon.ico" or "favicon.ico", "%PUBLIC_URL%/favicon.ico" will
-      work correctly both with client-side routing and a non-root public URL.
-      Learn how to configure a non-root public URL by running `npm run build`.
-    -->
-    <title>React App</title>
-  </head>
-  <body>
-    <noscript>You need to enable JavaScript to run this app.</noscript>
-    <div id="root"></div>
-    <!--
-      This HTML file is a template.
-      If you open it directly in the browser, you will see an empty page.
-
-      You can add webfonts, meta tags, or analytics to this file.
-      The build step will place the bundled scripts into the <body> tag.
-
-      To begin the development, run `npm start` or `yarn start`.
-      To create a production bundle, use `npm run build` or `yarn build`.
-    -->
-  </body>
-</html>

web/src/App.test.tsx

@@ -1,23 +1,23 @@
 import React from 'react';
 import { render, screen } from '@testing-library/react';
+import { vi, type Mock } from 'vitest';
 import App from './App';
 import { api } from './api';
 
-// Mock all API calls so the app renders without a backend
-jest.mock('./api', () => ({
+vi.mock('./api', () => ({
   api: {
-    getSetupStatus: jest.fn(),
-    createSetupAdmin: jest.fn(),
-    listVolunteers: jest.fn().mockResolvedValue([]),
-    listSchedules: jest.fn().mockResolvedValue([]),
-    listTimeOff: jest.fn().mockResolvedValue([]),
-    listNotifications: jest.fn().mockResolvedValue([]),
-    getVolunteer: jest.fn().mockResolvedValue(null),
+    getSetupStatus: vi.fn(),
+    createSetupAdmin: vi.fn(),
+    listVolunteers: vi.fn().mockResolvedValue([]),
+    listSchedules: vi.fn().mockResolvedValue([]),
+    listTimeOff: vi.fn().mockResolvedValue([]),
+    listNotifications: vi.fn().mockResolvedValue([]),
+    getVolunteer: vi.fn().mockResolvedValue(null),
   },
   OPERATIONAL_ROLES: [],
 }));
 
-const mockGetSetupStatus = api.getSetupStatus as jest.Mock;
+const mockGetSetupStatus = api.getSetupStatus as Mock;
 
 beforeEach(() => {
   localStorage.clear();

web/src/index.tsx

@@ -1,19 +0,0 @@
-import React from 'react';
-import ReactDOM from 'react-dom/client';
-import './index.css';
-import App from './App';
-import reportWebVitals from './reportWebVitals';
-
-const root = ReactDOM.createRoot(
-  document.getElementById('root') as HTMLElement
-);
-root.render(
-  <React.StrictMode>
-    <App />
-  </React.StrictMode>
-);
-
-// If you want to start measuring performance in your app, pass a function
-// to log results (for example: reportWebVitals(console.log))
-// or send to an analytics endpoint. Learn more: https://bit.ly/CRA-vitals
-reportWebVitals();

web/src/logo.svg

@@ -1 +0,0 @@
-<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 841.9 595.3"><g fill="#61DAFB"><path d="M666.3 296.5c0-32.5-40.7-63.3-103.1-82.4 14.4-63.6 8-114.2-20.2-130.4-6.5-3.8-14.1-5.6-22.4-5.6v22.3c4.6 0 8.3.9 11.4 2.6 13.6 7.8 19.5 37.5 14.9 75.7-1.1 9.4-2.9 19.3-5.1 29.4-19.6-4.8-41-8.5-63.5-10.9-13.5-18.5-27.5-35.3-41.6-50 32.6-30.3 63.2-46.9 84-46.9V78c-27.5 0-63.5 19.6-99.9 53.6-36.4-33.8-72.4-53.2-99.9-53.2v22.3c20.7 0 51.4 16.5 84 46.6-14 14.7-28 31.4-41.3 49.9-22.6 2.4-44 6.1-63.6 11-2.3-10-4-19.7-5.2-29-4.7-38.2 1.1-67.9 14.6-75.8 3-1.8 6.9-2.6 11.5-2.6V78.5c-8.4 0-16 1.8-22.6 5.6-28.1 16.2-34.4 66.7-19.9 130.1-62.2 19.2-102.7 49.9-102.7 82.3 0 32.5 40.7 63.3 103.1 82.4-14.4 63.6-8 114.2 20.2 130.4 6.5 3.8 14.1 5.6 22.5 5.6 27.5 0 63.5-19.6 99.9-53.6 36.4 33.8 72.4 53.2 99.9 53.2 8.4 0 16-1.8 22.6-5.6 28.1-16.2 34.4-66.7 19.9-130.1 62-19.1 102.5-49.9 102.5-82.3zm-130.2-66.7c-3.7 12.9-8.3 26.2-13.5 39.5-4.1-8-8.4-16-13.1-24-4.6-8-9.5-15.8-14.4-23.4 14.2 2.1 27.9 4.7 41 7.9zm-45.8 106.5c-7.8 13.5-15.8 26.3-24.1 38.2-14.9 1.3-30 2-45.2 2-15.1 0-30.2-.7-45-1.9-8.3-11.9-16.4-24.6-24.2-38-7.6-13.1-14.5-26.4-20.8-39.8 6.2-13.4 13.2-26.8 20.7-39.9 7.8-13.5 15.8-26.3 24.1-38.2 14.9-1.3 30-2 45.2-2 15.1 0 30.2.7 45 1.9 8.3 11.9 16.4 24.6 24.2 38 7.6 13.1 14.5 26.4 20.8 39.8-6.3 13.4-13.2 26.8-20.7 39.9zm32.3-13c5.4 13.4 10 26.8 13.8 39.8-13.1 3.2-26.9 5.9-41.2 8 4.9-7.7 9.8-15.6 14.4-23.7 4.6-8 8.9-16.1 13-24.1zM421.2 430c-9.3-9.6-18.6-20.3-27.8-32 9 .4 18.2.7 27.5.7 9.4 0 18.7-.2 27.8-.7-9 11.7-18.3 22.4-27.5 32zm-74.4-58.9c-14.2-2.1-27.9-4.7-41-7.9 3.7-12.9 8.3-26.2 13.5-39.5 4.1 8 8.4 16 13.1 24 4.7 8 9.5 15.8 14.4 23.4zM420.7 163c9.3 9.6 18.6 20.3 27.8 32-9-.4-18.2-.7-27.5-.7-9.4 0-18.7.2-27.8.7 9-11.7 18.3-22.4 27.5-32zm-74 58.9c-4.9 7.7-9.8 15.6-14.4 23.7-4.6 8-8.9 16-13 24-5.4-13.4-10-26.8-13.8-39.8 13.1-3.1 26.9-5.8 41.2-7.9zm-90.5 125.2c-35.4-15.1-58.3-34.9-58.3-50.6 0-15.7 22.9-35.6 58.3-50.6 8.6-3.7 18-7 27.7-10.1 5.7 19.6 13.2 40 22.5 60.9-9.2 20.8-16.6 41.1-22.2 60.6-9.9-3.1-19.3-6.5-28-10.2zM310 490c-13.6-7.8-19.5-37.5-14.9-75.7 1.1-9.4 2.9-19.3 5.1-29.4 19.6 4.8 41 8.5 63.5 10.9 13.5 18.5 27.5 35.3 41.6 50-32.6 30.3-63.2 46.9-84 46.9-4.5-.1-8.3-1-11.3-2.7zm237.2-76.2c4.7 38.2-1.1 67.9-14.6 75.8-3 1.8-6.9 2.6-11.5 2.6-20.7 0-51.4-16.5-84-46.6 14-14.7 28-31.4 41.3-49.9 22.6-2.4 44-6.1 63.6-11 2.3 10.1 4.1 19.8 5.2 29.1zm38.5-66.7c-8.6 3.7-18 7-27.7 10.1-5.7-19.6-13.2-40-22.5-60.9 9.2-20.8 16.6-41.1 22.2-60.6 9.9 3.1 19.3 6.5 28.1 10.2 35.4 15.1 58.3 34.9 58.3 50.6-.1 15.7-23 35.6-58.4 50.6zM320.8 78.4z"/><circle cx="420.9" cy="296.5" r="45.7"/><path d="M520.5 78.1z"/></g></svg>

web/src/main.tsx

@@ -0,0 +1,10 @@
+import React from 'react';
+import ReactDOM from 'react-dom/client';
+import './index.css';
+import App from './App';
+
+ReactDOM.createRoot(document.getElementById('root')!).render(
+  <React.StrictMode>
+    <App />
+  </React.StrictMode>
+);

web/src/pages/Activate.test.tsx

@@ -1,17 +1,18 @@
 import React from 'react';
 import { render, screen, fireEvent, waitFor } from '@testing-library/react';
+import { vi, type Mock } from 'vitest';
 import { MemoryRouter, Route, Routes } from 'react-router-dom';
 import Activate from './Activate';
 import { api } from '../api';
 import { AuthProvider } from '../auth';
 
-jest.mock('../api', () => ({
+vi.mock('../api', () => ({
   api: {
-    activate: jest.fn(),
+    activate: vi.fn(),
   },
 }));
 
-const mockActivate = api.activate as jest.Mock;
+const mockActivate = api.activate as Mock;
 
 function renderActivate(token = 'valid-token') {
   return render(

web/src/pages/Profile.test.tsx

@@ -1,14 +1,15 @@
 import React from 'react';
 import { render, screen, fireEvent, waitFor } from '@testing-library/react';
+import { vi, type Mock } from 'vitest';
 import { MemoryRouter } from 'react-router-dom';
 import Profile from './Profile';
 import { api, Volunteer } from '../api';
 import { AuthProvider } from '../auth';
 
-jest.mock('../api', () => ({
+vi.mock('../api', () => ({
   api: {
-    getVolunteer: jest.fn(),
-    updateVolunteer: jest.fn(),
+    getVolunteer: vi.fn(),
+    updateVolunteer: vi.fn(),
   },
 }));
 
@@ -21,8 +22,8 @@ function buildFakeJWT(payload: object): string {
   return `${header}.${body}.fakesig`;
 }
 
-const mockGetVolunteer = api.getVolunteer as jest.Mock;
-const mockUpdateVolunteer = api.updateVolunteer as jest.Mock;
+const mockGetVolunteer = api.getVolunteer as Mock;
+const mockUpdateVolunteer = api.updateVolunteer as Mock;
 
 const baseVolunteer: Volunteer = {
   id: 5,

web/src/pages/Schedules.test.tsx

@@ -1,32 +1,36 @@
 import React from 'react';
 import { render, screen, fireEvent, waitFor } from '@testing-library/react';
+import { vi, type Mock } from 'vitest';
 import { MemoryRouter } from 'react-router-dom';
 import Schedules from './Schedules';
 import { api, ShiftInstance, ShiftTemplate } from '../api';
 
-jest.mock('../api', () => ({
-  ...jest.requireActual('../api'),
-  api: {
-    listShifts: jest.fn(),
-    listShiftTemplates: jest.fn(),
-    listVolunteers: jest.fn(),
-    listTimeOff: jest.fn(),
-    generateShifts: jest.fn(),
-    publishShifts: jest.fn(),
-    unpublishShifts: jest.fn(),
-    updateShift: jest.fn(),
-    confirmShift: jest.fn(),
-    createShiftTemplate: jest.fn(),
-    updateShiftTemplate: jest.fn(),
-    deleteShiftTemplate: jest.fn(),
-  },
+vi.mock('../api', async () => {
+  const actual = await vi.importActual<typeof import('../api')>('../api');
+  return {
+    ...actual,
+    api: {
+      listShifts: vi.fn(),
+      listShiftTemplates: vi.fn(),
+      listVolunteers: vi.fn(),
+      listTimeOff: vi.fn(),
+      generateShifts: vi.fn(),
+      publishShifts: vi.fn(),
+      unpublishShifts: vi.fn(),
+      updateShift: vi.fn(),
+      confirmShift: vi.fn(),
+      createShiftTemplate: vi.fn(),
+      updateShiftTemplate: vi.fn(),
+      deleteShiftTemplate: vi.fn(),
+    },
+  };
+});
+
+vi.mock('../auth', () => ({
+  useAuth: vi.fn(),
 }));
 
-jest.mock('../auth', () => ({
-  useAuth: jest.fn(),
-}));
-
-const { useAuth } = require('../auth');
+const { useAuth } = await import('../auth');
 
 const mockDraftInstance: ShiftInstance = {
   id: 1,
@@ -75,8 +79,8 @@ function renderAt(path: string) {
 
 describe('Schedules (volunteer view)', () => {
   beforeEach(() => {
-    useAuth.mockReturnValue({ role: 'volunteer', volunteerID: 10 });
-    (api.listShifts as jest.Mock).mockResolvedValue([mockPublishedInstance]);
+    (useAuth as Mock).mockReturnValue({ role: 'volunteer', volunteerID: 10 });
+    (api.listShifts as Mock).mockResolvedValue([mockPublishedInstance]);
   });
 
   it('renders published shifts for a volunteer', async () => {
@@ -98,9 +102,9 @@ describe('Schedules (volunteer view)', () => {
 
 describe('Schedules (admin shifts view)', () => {
   beforeEach(() => {
-    useAuth.mockReturnValue({ role: 'admin', volunteerID: 1 });
-    (api.listShifts as jest.Mock).mockResolvedValue([mockDraftInstance]);
-    (api.listShiftTemplates as jest.Mock).mockResolvedValue([mockTemplate]);
+    (useAuth as Mock).mockReturnValue({ role: 'admin', volunteerID: 1 });
+    (api.listShifts as Mock).mockResolvedValue([mockDraftInstance]);
+    (api.listShiftTemplates as Mock).mockResolvedValue([mockTemplate]);
   });
 
   it('shows Generate and Publish buttons when drafts exist', async () => {
@@ -111,7 +115,7 @@ describe('Schedules (admin shifts view)', () => {
   });
 
   it('calls generateShifts on Generate click', async () => {
-    (api.generateShifts as jest.Mock).mockResolvedValue([mockDraftInstance]);
+    (api.generateShifts as Mock).mockResolvedValue([mockDraftInstance]);
     renderAt('/schedules');
     await waitFor(() => expect(screen.getByText('Generate')).toBeInTheDocument());
     fireEvent.click(screen.getByText('Generate'));
@@ -119,8 +123,8 @@ describe('Schedules (admin shifts view)', () => {
   });
 
   it('calls publishShifts on Publish click', async () => {
-    (api.publishShifts as jest.Mock).mockResolvedValue({ year: 2026, month: 4 });
-    (api.listShifts as jest.Mock)
+    (api.publishShifts as Mock).mockResolvedValue({ year: 2026, month: 4 });
+    (api.listShifts as Mock)
       .mockResolvedValueOnce([mockDraftInstance])
       .mockResolvedValue([{ ...mockDraftInstance, status: 'published' }]);
 
@@ -131,7 +135,7 @@ describe('Schedules (admin shifts view)', () => {
   });
 
   it('shows Unpublish button when all shifts are published', async () => {
-    (api.listShifts as jest.Mock).mockResolvedValue([mockPublishedInstance]);
+    (api.listShifts as Mock).mockResolvedValue([mockPublishedInstance]);
     renderAt('/schedules');
     await waitFor(() => expect(screen.getByText('Unpublish')).toBeInTheDocument());
   });
@@ -143,11 +147,11 @@ describe('Schedules (admin shifts view)', () => {
   });
 
   it('opens edit form with volunteer checkboxes when Edit is clicked', async () => {
-    (api.listVolunteers as jest.Mock).mockResolvedValue([
+    (api.listVolunteers as Mock).mockResolvedValue([
       { id: 5, name: 'Alice', active: true, operational_roles: 'Dog Shelter Volunteer', is_trainee: false },
       { id: 6, name: 'Bob', active: true, operational_roles: 'Behaviour Team', is_trainee: false },
     ]);
-    (api.listTimeOff as jest.Mock).mockResolvedValue([]);
+    (api.listTimeOff as Mock).mockResolvedValue([]);
     renderAt('/schedules');
     await waitFor(() => expect(screen.getByText('Edit')).toBeInTheDocument());
     fireEvent.click(screen.getByText('Edit'));
@@ -157,11 +161,11 @@ describe('Schedules (admin shifts view)', () => {
   });
 
   it('hides volunteers with approved time off on the shift date', async () => {
-    (api.listVolunteers as jest.Mock).mockResolvedValue([
+    (api.listVolunteers as Mock).mockResolvedValue([
       { id: 5, name: 'Alice', active: true, operational_roles: 'Dog Shelter Volunteer', is_trainee: false },
       { id: 6, name: 'Bob', active: true, operational_roles: 'Behaviour Team', is_trainee: false },
     ]);
-    (api.listTimeOff as jest.Mock).mockResolvedValue([
+    (api.listTimeOff as Mock).mockResolvedValue([
       { id: 1, volunteer_id: 6, starts_at: '2026-04-06T00:00:00Z', ends_at: '2026-04-07T00:00:00Z', status: 'approved' },
     ]);
     renderAt('/schedules');
@@ -183,8 +187,8 @@ describe('Schedules (admin shifts view)', () => {
 
 describe('Schedules (admin templates view)', () => {
   beforeEach(() => {
-    useAuth.mockReturnValue({ role: 'admin', volunteerID: 1 });
-    (api.listShiftTemplates as jest.Mock).mockResolvedValue([mockTemplate]);
+    (useAuth as Mock).mockReturnValue({ role: 'admin', volunteerID: 1 });
+    (api.listShiftTemplates as Mock).mockResolvedValue([mockTemplate]);
   });
 
   it('renders templates at /schedules/templates', async () => {
@@ -201,8 +205,8 @@ describe('Schedules (admin templates view)', () => {
   });
 
   it('deletes a template', async () => {
-    (api.deleteShiftTemplate as jest.Mock).mockResolvedValue(undefined);
-    window.confirm = jest.fn().mockReturnValue(true);
+    (api.deleteShiftTemplate as Mock).mockResolvedValue(undefined);
+    window.confirm = vi.fn().mockReturnValue(true);
     renderAt('/schedules/templates');
     await waitFor(() => expect(screen.getAllByText('Delete')[0]).toBeInTheDocument());
     fireEvent.click(screen.getAllByText('Delete')[0]);

web/src/pages/Setup.test.tsx

@@ -1,24 +1,25 @@
 import React from 'react';
 import { render, screen, fireEvent, waitFor } from '@testing-library/react';
+import { vi, type Mock } from 'vitest';
 import { MemoryRouter, Route, Routes } from 'react-router-dom';
 import Setup from './Setup';
 import { api } from '../api';
 import { AuthProvider } from '../auth';
 
-jest.mock('../api', () => ({
+vi.mock('../api', () => ({
   api: {
-    getSetupStatus: jest.fn(),
-    createSetupAdmin: jest.fn(),
+    getSetupStatus: vi.fn(),
+    createSetupAdmin: vi.fn(),
   },
 }));
 
 // Mock useSetup from App to provide setNeedsSetup
-const mockSetNeedsSetup = jest.fn();
-jest.mock('../App', () => ({
+const mockSetNeedsSetup = vi.fn();
+vi.mock('../App', () => ({
   useSetup: () => ({ setNeedsSetup: mockSetNeedsSetup }),
 }));
 
-const mockCreateSetupAdmin = api.createSetupAdmin as jest.Mock;
+const mockCreateSetupAdmin = api.createSetupAdmin as Mock;
 
 function renderSetup() {
   return render(

web/src/pages/Volunteers.test.tsx

@@ -1,24 +1,25 @@
 import React from 'react';
 import { render, screen, fireEvent, waitFor } from '@testing-library/react';
+import { vi, type Mock } from 'vitest';
 import { MemoryRouter } from 'react-router-dom';
 import Volunteers from './Volunteers';
 import { api, AdminVolunteer } from '../api';
 import { AuthProvider } from '../auth';
 
-jest.mock('../api', () => ({
+vi.mock('../api', () => ({
   api: {
-    listVolunteers: jest.fn(),
-    createVolunteer: jest.fn(),
-    updateVolunteer: jest.fn(),
-    resendInvite: jest.fn(),
+    listVolunteers: vi.fn(),
+    createVolunteer: vi.fn(),
+    updateVolunteer: vi.fn(),
+    resendInvite: vi.fn(),
   },
   OPERATIONAL_ROLES: ['Behaviour Team', 'Dog Log Monitor', 'Dog Shelter Volunteer', 'Trainee', 'Floater'],
 }));
 
-const mockListVolunteers = api.listVolunteers as jest.Mock;
-const mockCreateVolunteer = api.createVolunteer as jest.Mock;
-const mockUpdateVolunteer = api.updateVolunteer as jest.Mock;
-const mockResendInvite = api.resendInvite as jest.Mock;
+const mockListVolunteers = api.listVolunteers as Mock;
+const mockCreateVolunteer = api.createVolunteer as Mock;
+const mockUpdateVolunteer = api.updateVolunteer as Mock;
+const mockResendInvite = api.resendInvite as Mock;
 
 function buildFakeJWT(payload: object): string {
   const header = btoa(JSON.stringify({ alg: 'HS256', typ: 'JWT' }));

web/src/react-app-env.d.ts

@@ -1 +0,0 @@
-/// <reference types="react-scripts" />

web/src/reportWebVitals.ts

@@ -1,15 +0,0 @@
-import { ReportHandler } from 'web-vitals';
-
-const reportWebVitals = (onPerfEntry?: ReportHandler) => {
-  if (onPerfEntry && onPerfEntry instanceof Function) {
-    import('web-vitals').then(({ getCLS, getFID, getFCP, getLCP, getTTFB }) => {
-      getCLS(onPerfEntry);
-      getFID(onPerfEntry);
-      getFCP(onPerfEntry);
-      getLCP(onPerfEntry);
-      getTTFB(onPerfEntry);
-    });
-  }
-};
-
-export default reportWebVitals;

web/src/setupTests.ts

@@ -1,9 +1,22 @@
-// jest-dom adds custom jest matchers for asserting on DOM nodes.
-// allows you to do things like:
-// expect(element).toHaveTextContent(/react/i)
-// learn more: https://github.com/testing-library/jest-dom
 import '@testing-library/jest-dom';
 
-// React Router v7 requires TextEncoder/TextDecoder which jsdom (CRA 5) does not provide.
-import { TextEncoder, TextDecoder } from 'util';
-Object.assign(global, { TextEncoder, TextDecoder });
+// Node 22+ ships a native localStorage (getter on globalThis) that lacks
+// .clear()/.getItem()/etc. jsdom doesn't override it. Delete the native
+// property and replace it with a spec-compliant Storage implementation.
+const store = new Map<string, string>();
+const storage: Storage = {
+  getItem: (key: string) => store.get(key) ?? null,
+  setItem: (key: string, value: string) => { store.set(key, String(value)); },
+  removeItem: (key: string) => { store.delete(key); },
+  clear: () => { store.clear(); },
+  key: (index: number) => [...store.keys()][index] ?? null,
+  get length() { return store.size; },
+};
+
+delete (globalThis as any).localStorage;
+Object.defineProperty(globalThis, 'localStorage', {
+  value: storage,
+  writable: true,
+  configurable: true,
+  enumerable: true,
+});

web/src/vite-env.d.ts

@@ -0,0 +1 @@
+/// <reference types="vite/client" />

web/tsconfig.app.json

@@ -0,0 +1,21 @@
+{
+  "compilerOptions": {
+    "target": "ES2020",
+    "lib": ["dom", "dom.iterable", "esnext"],
+    "allowJs": true,
+    "skipLibCheck": true,
+    "esModuleInterop": true,
+    "allowSyntheticDefaultImports": true,
+    "strict": true,
+    "forceConsistentCasingInFileNames": true,
+    "noFallthroughCasesInSwitch": true,
+    "module": "ESNext",
+    "moduleResolution": "bundler",
+    "resolveJsonModule": true,
+    "isolatedModules": true,
+    "noEmit": true,
+    "jsx": "react-jsx"
+  },
+  "include": ["src"],
+  "exclude": ["src/**/*.test.tsx", "src/**/*.test.ts", "src/setupTests.ts"]
+}

web/tsconfig.app.tsbuildinfo

@@ -0,0 +1 @@
+{"root":["./src/app.tsx","./src/api.ts","./src/auth.tsx","./src/main.tsx","./src/vite-env.d.ts","./src/pages/activate.tsx","./src/pages/dashboard.tsx","./src/pages/login.tsx","./src/pages/profile.tsx","./src/pages/schedules.tsx","./src/pages/setup.tsx","./src/pages/timeoff.tsx","./src/pages/volunteers.tsx"],"version":"6.0.2"}

web/tsconfig.json

@@ -1,11 +1,7 @@
 {
   "compilerOptions": {
-    "target": "es5",
-    "lib": [
-      "dom",
-      "dom.iterable",
-      "esnext"
-    ],
+    "target": "ES2020",
+    "lib": ["dom", "dom.iterable", "esnext"],
     "allowJs": true,
     "skipLibCheck": true,
     "esModuleInterop": true,
@@ -13,14 +9,14 @@
     "strict": true,
     "forceConsistentCasingInFileNames": true,
     "noFallthroughCasesInSwitch": true,
-    "module": "esnext",
-    "moduleResolution": "node",
+    "module": "ESNext",
+    "moduleResolution": "bundler",
     "resolveJsonModule": true,
     "isolatedModules": true,
     "noEmit": true,
-    "jsx": "react-jsx"
+    "jsx": "react-jsx",
+    "types": ["vitest/globals"]
   },
-  "include": [
-    "src"
-  ]
+  "include": ["src", "vite.config.ts"],
+  "references": [{ "path": "./tsconfig.app.json" }]
 }

web/tsconfig.tsbuildinfo

@@ -0,0 +1 @@
+{"root":["./src/app.test.tsx","./src/app.tsx","./src/api.ts","./src/auth.tsx","./src/main.tsx","./src/setuptests.ts","./src/vite-env.d.ts","./src/pages/activate.test.tsx","./src/pages/activate.tsx","./src/pages/dashboard.tsx","./src/pages/login.tsx","./src/pages/profile.test.tsx","./src/pages/profile.tsx","./src/pages/schedules.test.tsx","./src/pages/schedules.tsx","./src/pages/setup.test.tsx","./src/pages/setup.tsx","./src/pages/timeoff.tsx","./src/pages/volunteers.test.tsx","./src/pages/volunteers.tsx","./vite.config.ts"],"errors":true,"version":"6.0.2"}

web/vite.config.ts

@@ -0,0 +1,23 @@
+/// <reference types="vitest/config" />
+import { defineConfig } from 'vite';
+import react from '@vitejs/plugin-react';
+
+export default defineConfig({
+  plugins: [react()],
+  server: {
+    port: 3000,
+    proxy: {
+      '/api': 'http://localhost:8080',
+    },
+  },
+  build: {
+    outDir: 'dist',
+  },
+  test: {
+    globals: true,
+    environment: 'jsdom',
+    setupFiles: './src/setupTests.ts',
+    css: true,
+    unstubGlobals: true,
+  },
+});