48 lines
1.2 KiB
Markdown
48 lines
1.2 KiB
Markdown
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# wickra-wasm
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WebAssembly bindings for the Wickra streaming-first technical indicators library.
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## Build
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You need [`wasm-pack`](https://rustwasm.github.io/wasm-pack/) and the
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`wasm32-unknown-unknown` Rust target:
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```bash
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rustup target add wasm32-unknown-unknown
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cargo install wasm-pack
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```
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Then from the repository root:
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```bash
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wasm-pack build bindings/wasm --target web --release --features panic-hook
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```
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The compiled package lands in `bindings/wasm/pkg/`. Targets:
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- `--target web` for native ES modules in browsers
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- `--target bundler` for webpack/Vite/Rollup
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- `--target nodejs` for Node.js
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## Example
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```js
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import init, { SMA, RSI, MACD, version } from "./pkg/wickra_wasm.js";
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await init();
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console.log("wickra:", version());
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// Streaming
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const rsi = new RSI(14);
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for (const price of livePrices) {
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const v = rsi.update(price);
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if (v !== undefined && v > 70) console.log("overbought");
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}
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// Batch (returns a Float64Array; NaN for warmup positions)
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const sma = new SMA(20).batch(new Float64Array(historicalPrices));
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```
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An interactive demo lives in `bindings/wasm/examples/index.html`. After building
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the package serve the `bindings/wasm/` directory and open `examples/index.html`.
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