# Introduction

**Navi** is a scripting language for writing technical analysis indicators and trading strategies. It is compatible with Pine Script V6 and runs on the Longbridge platform via the `longbridge` CLI.

## What You Can Build

- **Indicators** — plot series, shapes, labels, lines, and tables on charts
- **Strategies** — define entry/exit rules and run backtests against historical data
- **Libraries** — write reusable functions and types that other scripts can import

## Language Design

Navi is a statically typed, compiled language. Type errors are caught before the script ever runs. The compiler performs multiple optimization passes — constant folding, dead code elimination, and algebraic simplification — before generating bytecode, so the runtime only processes already-optimized instructions. For workloads that demand even higher throughput, an optional JIT compiler (powered by Cranelift) translates bytecode to native machine code at runtime.

Navi uses a **streaming computation model**: market data flows in bar by bar, and the engine processes each candlestick incrementally — from the oldest historical bar to the most recent, and continuously as new real-time bars arrive. The same script runs identically over history and live data, with no distinction in code. All market data — `close`, `open`, `high`, `low`, `volume` — is a *series* that automatically tracks its full history. Reference any past value with `close[1]` (one bar back) or `close[N]` (N bars back). This streaming design keeps memory usage low and indicator logic concise: write the calculation for the current bar, and history takes care of itself.

## Pine Script Compatibility

Navi is fully compatible with Pine Script V6. You can run existing Pine Script files directly in Navi without any modifications — just pass the `.pine` file as-is. You can also rewrite them in Navi syntax, which is a simple process. See [Language Basics](/guide/language-basics) and [Examples](/guide/examples) for the supported syntax and common script patterns.

## Next Steps

- [Quick Start](/guide/quick-start) — write and run your first indicator with the CLI
- [Language Basics](/guide/language-basics) — learn Navi syntax
- [Examples](/guide/examples) — study complete indicators and strategies