fastQuant

fastQuant is the migration workspace for moving Quanting from a React/Tauri/Rust desktop app to a SvelteKit 5 frontend with a FastAPI backend.

Target Architecture

apps/web
  SvelteKit 5 UI
  lightweight-charts rendering
  Svelte stores
  HTTP/WebSocket API client

backend
  FastAPI
  market data clients
  indicator engine
  strategy/backtest services
  cache layer

The migration keeps business logic in FastAPI. SvelteKit should focus on views, chart rendering, local UI state, and API consumption.

Development

Backend uses uv for Python dependency and environment management.

cd fastQuant/backend
uv sync
uv run uvicorn app.main:app --reload --port 8000

Frontend uses SvelteKit 5.

cd fastQuant/apps/web
pnpm install
pnpm dev

API Boundary

The first migration boundary mirrors the existing Tauri commands:

Existing command	FastAPI route
fetch_analysis	POST /api/analysis
fetch_watchlist_snapshots	POST /api/watchlist/snapshots
fetch_fundamentals	POST /api/fundamentals
fetch_multi_symbol_candles	POST /api/strategy/multi-symbol-candles
fetch_premarket_snapshots	POST /api/strategy/premarket-snapshots
search_symbols	GET /api/search/symbols
Strategy A backtest	POST /api/strategy/strategy-a/backtest
Strategy B MACD/BB scan	POST /api/strategy/macd-bb-scan
Strategy B pair trading	POST /api/strategy/pair-trading
ORB scan	POST /api/strategy/orb-scan

Realtime candle streaming is planned for:

WS /ws/candles/{market}/{symbol}

Migration Rule

Do not move UI-only concerns into FastAPI. Do move data fetching, indicator calculation, screening, strategy signals, and backtest logic into FastAPI.