Rule Cascade
ReferencePackage READMEs

@rules-cascade/common

The contract the other Rule Cascade packages share. It has no dependencies and evaluates nothing.

The contract the other Rule Cascade (README.md) packages share. It has no dependencies and evaluates nothing.

ExportWhat it is
The typesRuleSetDocument, Rule, Bundle, Manifest, EvaluationRequest, EvaluationResult, Finding, Operators and the rest of the specification's shapes
@rules-cascade/common/cronThe five-field cron schedule the manifest client and the rule server run on: parseCron, startCronTimer, checkTimeZone, CronSchedule, CronError. Also exported from the main entry
VERSIONThe version every package of this release carries
import type { Manifest, EvaluationRequest } from '@rules-cascade/common';
import { parseCron } from '@rules-cascade/common/cron';

parseCron('*/15 * * * *').next(new Date('2026-10-05T10:07:00Z'));   // 2026-10-05T10:15:00.000Z

You rarely install it on its own: @rules-cascade/core re-exports everything in it, and @rules-cascade/client and @rules-cascade/server depend on it.

@rules-cascade/core

The Rule Cascade runtime for browsers and Node.js. It implements both conformance levels of the specification: it evaluates bundles and manifests (evaluator) and it loads source documents and produces bundles (compiler).

@rules-cascade/client

Fetches, caches and refreshes Rule Cascade manifests from a rule server, and evaluates them in React. It runs in browsers and Node.js; evaluation itself is @rules-cascade/core.