datalogic-rs

A fast, production-ready Rust engine for JSONLogic.

use datalogic_rs::DataLogic;
use serde_json::json;

let engine = DataLogic::new();
let logic = json!({ ">": [{ "var": "age" }, 18] });
let compiled = engine.compile(&logic).unwrap();

let result = engine.evaluate_owned(&compiled, json!({ "age": 21 })).unwrap();
assert_eq!(result, json!(true));

• Full Documentation
• Online Playground
• Rust API (docs.rs)
• JSONLogic Specification

Try the JSONLogic Online Debugger to interactively test your rules

• Thread-Safe - Compile once, evaluate anywhere with zero-copy Arc sharing
• Fully Compliant - Passes the official JSONLogic test suite
• 59 Built-in Operators - Including datetime, error handling, and extended string/array operations
• Extensible - Add custom operators with a simple trait
• Configurable - Customizable NaN handling, division by zero, and truthiness behavior
• Templating Mode - Preserve object structures for dynamic JSON generation
• Multi-Platform - Rust, WASM (browser/Node.js), with visual React debugger and editor

import init, { evaluate } from '@goplasmatic/datalogic';

await init();

const result = evaluate(
  '{">=": [{"var": "age"}, 18]}',
  '{"age": 21}',
  false
);
console.log(JSON.parse(result)); // true

import { DataLogicEditor } from '@goplasmatic/datalogic-ui';

<DataLogicEditor
  value={{ "and": [{ ">": [{ "var": "age" }, 18] }, { "var": "active" }] }}
  data={{ age: 25, active: true }}
/>

Created by Plasmatic, building open-source tools for financial infrastructure and data processing.

Licensed under Apache 2.0. See LICENSE for details.