Technical indicators and overlays to run technical analysis with JavaScript / TypeScript.

Provide a TypeScript implementation for common technical indicators with arbitrary-precision decimal arithmetic.

• Accurate. Don't rely on type number and its precision limits. Use Big.
• Typed. Source code is 100% TypeScript. No need to install external typings.
• Tested. Code coverage is 100%. No surprises when using it.

1. Average Directional Index (ADX)
2. Average True Range (ATR)
3. Bollinger Bands (BB)
4. Double Exponential Moving Average (DEMA)
5. Double Moving Average (DMA)
6. Exponential Moving Average (EMA)
7. Moving Average Convergence Divergence (MACD)
8. Rate-of-Change (ROC)
9. Relative Strength Index (RSI)
10. Simple Moving Average (SMA)
11. Smoothed Moving Average (SMMA)

import {SMA} from 'trading-signals';

const sma = new SMA(3);

// You can add numbers:
sma.update(40);
sma.update(30);
sma.update(20);

// You can add strings:
sma.update('10');

// You can add arbitrary-precision decimals:
import Big from 'big.js';
sma.update(new Big(30));

// You can get the result in various formats:
console.log(sma.getResult().valueOf()); // "20"
console.log(sma.getResult().toFixed(2)); // "20.00"

Contributions, issues and feature requests are welcome!

Feel free to check the issues page.

This project is MIT licensed.

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