kingchenc
a0884fa010
The 14 candle and multi-parameter indicator constructors passed raw parameters through must() (an expect()), so invalid arguments such as new MACD(0,0,0) or new BollingerBands(20,-1) aborted the whole process over the napi boundary (the release profile sets panic=abort). napi-rs 2.16 does accept a #[napi(constructor)] returning napi::Result<Self> (the old must() comment was wrong), so each now returns napi::Result<Self> and throws a clean JS error via map_err. must()/clamp_period stay for the scalar macro, where period is clamped and the Result is provably Ok. Verified: every invalid constructor throws, valid ones still build.
@wickra/wickra
Node.js bindings for the Wickra streaming-first technical indicators library.
Install
Once published, install per platform via the precompiled native package:
npm install @wickra/wickra
Build from source
cd bindings/node
npm install
npm run build
npm test
The native module is built via napi-rs. The build script
produces a wickra.<platform>-<arch>.node binary in the package root that
index.js loads at runtime.
Usage
import { SMA, RSI, MACD, version } from '@wickra/wickra';
console.log('wickra', version());
// Batch:
const prices = Array.from({ length: 1000 }, (_, i) => 100 + Math.sin(i * 0.1) * 5);
const rsi = new RSI(14).batch(prices);
// Streaming:
const macd = new MACD(12, 26, 9);
for (const p of livePriceStream) {
const v = macd.update(p);
if (v && v.histogram > 0) console.log('bullish crossover candidate');
}
See index.d.ts for the full TypeScript surface.