Scryer NPM package #2838

guregu · 2025-03-01T09:52:51Z

guregu
Mar 1, 2025

Hello everyone, I'd like to introduce the scryer package on NPM. It is a TypeScript package that embeds wasm Scryer and provides a light wrapper around the data types. The API is roughly based on trealla's NPM package (which I maintain). As the Scryer wasm implementation evolves I'll probably nudge it towards Scryer's official APIs, most of the Term related stuff at the moment is a straight port from trealla-js.

Repo is here: https://github.com/guregu/scryer-js
I also have a (hastily ported and kind of janky) online playground here: https://php.energy/scryer.html

Using this package in a browser is super easy, either with a bundler (npm install scryer) or through ES modules and a site like esm.sh.

<!doctype html>
<html>
<body>
  <script type="module">
  import { init, Prolog } from 'https://esm.sh/scryer@0.1.3';
  await init();
  
  const pl = new Prolog();
  const query = pl.query(`X = 1 ; X = hello(world).`);
  for (const answer of query) {
    console.log(answer.bindings.X); // 1 | new Compound("hello", [new Atom("world")])
    const div = document.createElement("div");
    div.textContent = JSON.stringify(answer);
    document.body.appendChild(div);
  }
  </script>
</body>
</html>

The test code provides some usage examples.
Thanks to everyone who has contributed to Scryer and especially to the wasm port!

thierrymarianne · 2025-03-03T10:25:23Z

thierrymarianne
Mar 3, 2025

Amazing! Thank you!

0 replies

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Scryer NPM package #2838

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Scryer NPM package #2838

guregu Mar 1, 2025

Replies: 1 comment

thierrymarianne Mar 3, 2025

guregu
Mar 1, 2025

thierrymarianne
Mar 3, 2025