kingchenc
0479191b66
* feat(core): add signed dragonfly/gravestone encoding to Doji Doji gains an opt-in `.signed()` mode that classifies a detected Doji by the position of its body within the bar range: dragonfly (long lower shadow) emits +1.0 (bullish), gravestone (long upper shadow) emits -1.0 (bearish), and a long-legged/standard Doji emits 0.0. The default detection-flag behaviour (+1.0/0.0) is unchanged, so existing callers are unaffected. The other 14 candlestick patterns already emit the uniform +1 bull / -1 bear / 0 none convention; document that explicitly with a "Signed +-1 encoding" section on each so the whole family is a consistent drop-in ML feature. * feat(bindings): expose Doji signed mode in python, node, wasm Hand-write the Doji binding in all three language bindings (instead of the shared candle-pattern macro) so it accepts an opt-in `signed` flag and exposes an `is_signed`/`isSigned` accessor: - Python: `Doji(signed=False)` keyword argument - Node: `new Doji(signed?)` optional constructor argument (index.d.ts/.js regenerated via napi build) - WASM: `new Doji(signed?)` optional constructor argument The default construction is unchanged, so existing callers keep the direction-less +1/0 detection flag. * test(bindings,fuzz): cover Doji signed dragonfly/gravestone encoding - python: dragonfly(+1)/gravestone(-1)/neutral(0) and default-flag cases in test_known_values - node: equivalent signed/default assertions in indicators.test.js - fuzz: drive a signed Doji alongside the default in indicator_update_candle * docs: document signed candlestick convention and Doji signed mode README gains a candlestick sign-convention note; CHANGELOG records the new opt-in Doji signed dragonfly/gravestone encoding under [Unreleased].
Wickra — WebAssembly
Streaming-first technical indicators in the browser. npm install wickra-wasm — pure WebAssembly, runs anywhere a modern JS engine does.
Wickra is a multi-language technical-analysis library with a Rust core and
bindings for Python, Node.js, and WebAssembly. Every indicator is an O(1)
streaming state machine, so live trading dashboards and historical backtests
share the exact same implementation. This package is the WebAssembly binding
(wasm-bindgen, built for the web target); it exposes 200+ streaming-first
indicators across sixteen families.
Install
npm install wickra-wasm
Quick start
The module ships a default init export that loads the .wasm payload; await
it once before constructing indicators.
import init, { RSI } from 'wickra-wasm';
await init(); // load the WebAssembly module once
// Streaming: feed prices tick by tick in O(1).
const rsi = new RSI(14);
for (const price of liveFeed) {
const value = rsi.update(price); // null during warmup
if (value !== null && value > 70) {
console.log('overbought');
}
}
Constructors mirror the other bindings (new SMA(20), new MACD(12, 26, 9),
new BollingerBands(20, 2.0), …); update() returns the latest value or
null while the indicator is still warming up.
Documentation
The full indicator catalogue, guides, quickstarts, and API reference live in the main repository and documentation site:
- Repository & full indicator list: https://github.com/wickra-lib/wickra
- Docs (quickstarts, cookbook, TA-Lib migration): https://docs.wickra.org
- Runnable browser examples:
examples/wasm/
Wickra ships four bindings — Python, Node.js, WebAssembly, and Rust — that all
expose the same indicators from the shared, unsafe-forbidden Rust core.
Disclaimer
Wickra is an indicator toolkit, not a trading system. The values it computes are deterministic transforms of the input data — they are not financial advice and do not predict the market. Any use in a live trading context is at your own risk. The library is provided as is, without warranty of any kind.
License
Licensed under the PolyForm Noncommercial License 1.0.0. Personal projects, research, education, non-profits, and hobby trading bots are all fine; the one thing not allowed is commercial sale of the software or of services built around it. See LICENSE.