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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 and Examples for the supported syntax and common script patterns.

Next Steps ​