Files

T

kingchenc d42a0d7ad5 ci: fix maturin and wasm-pack jobs

Two unrelated failures in the post-release CI run:

- Python jobs: `maturin develop` requires an activated virtualenv on
  CI runners that don't have a system Python set up that way. Switch
  to `maturin build --release --out dist` followed by `pip install
  --find-links dist`, which is venv-agnostic and OS-portable.

- WASM job: the wasm-opt bundled with wasm-pack is older than the WASM
  features rustc 1.92 enables by default. The fix is to opt every feature
  in explicitly via the package metadata — reference-types, multivalue,
  bulk-memory, sign-ext, mutable-globals, nontrapping-float-to-int — so
  wasm-opt accepts the input.

Same code as before; only the build steps and the wasm-opt config changed.

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examples

Wickra 0.1.0: streaming-first technical indicators

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src

Wickra 0.1.0: streaming-first technical indicators

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Cargo.toml

ci: fix maturin and wasm-pack jobs

2026-05-21 18:04:57 +02:00

README.md

Wickra 0.1.0: streaming-first technical indicators

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README.md

wickra-wasm

WebAssembly bindings for the Wickra streaming-first technical indicators library.

Build

You need wasm-pack and the wasm32-unknown-unknown Rust target:

rustup target add wasm32-unknown-unknown
cargo install wasm-pack

Then from the repository root:

wasm-pack build bindings/wasm --target web --release --features panic-hook

The compiled package lands in bindings/wasm/pkg/. Targets:

--target web for native ES modules in browsers
--target bundler for webpack/Vite/Rollup
--target nodejs for Node.js

Example

import init, { SMA, RSI, MACD, version } from "./pkg/wickra_wasm.js";

await init();
console.log("wickra:", version());

// Streaming
const rsi = new RSI(14);
for (const price of livePrices) {
  const v = rsi.update(price);
  if (v !== undefined && v > 70) console.log("overbought");
}

// Batch (returns a Float64Array; NaN for warmup positions)
const sma = new SMA(20).batch(new Float64Array(historicalPrices));

An interactive demo lives in bindings/wasm/examples/index.html. After building the package serve the bindings/wasm/ directory and open examples/index.html.