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pedwfrontend/memory-bank/techContext.md
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# Tech Context — PEDW FrontEnd
## Languages and framework
- JavaScript-first codebase (TypeScript tooling present).
- Next.js `^14.2.28` with Pages Router.
- React `^18.2.0`.
## Core libraries in active use
- Auth: `next-auth` + Prisma adapters.
- Data/state: `redux`, `react-redux`, `next-redux-wrapper`, `redux-persist`, `redux-thunk`, `redux-form`.
- Data access/integration: `axios`, `crypto-js`, `jsonpath-plus`.
- i18n: `next-translate`, locale config in `i18n.js`.
- Storage/infrastructure integrations: `@azure/storage-blob`, `@azure/storage-queue`, `@azure/identity`.
- Notifications/telemetry: `notifications-node-client` (GOV.UK Notify), `applicationinsights`.
- PDF/maps: `@react-pdf/renderer`, `react-pdf`, `leaflet`, `react-leaflet`, `google-map-react`.
## Runtime and configuration
- Standard app start script uses Next runtime (`npm start`).
- Additional custom server entries exist (`server.js`, `server/server.js`) but are currently treated as non-active for the refactor baseline unless deployment evidence indicates otherwise.
- Environment-driven config for auth, relay/API roots, hash key, notify key, and database URL.
## Tooling and quality gates
- Linting: `npm run lint` (`next lint`).
- Formatting conventions from `.prettierrc`: 4 spaces, no trailing commas.
- Prisma client generation script available: `npm run prisma:generate`.
## CI/CD and deployment artifacts
- `azure-pipelines.yml` exists (legacy-looking Node 10 build pipeline).
- `Jenkinsfile` exists (Node 20 + Docker build/push/deploy flow).
- `Dockerfile` exists (Node 20 Alpine runtime).
- Repository contains mixed deployment artifacts; active production path should be treated as environment-dependent unless confirmed.
## Local development workflow
- `npm install`
- `npm run dev`
- `npm run lint`
- `npm run build && npm start` for production-like verification