Siglo

npm install @siglo/core

import { Step, flow } from '@siglo/core';

// 1. Define modular steps with input/output contracts
const fetchUser = Step.create('fetchUser', async (param: { userId: string }) => {
    return { name: 'Alice', tier: 'PRO' };
});

// 2. Accumulated Context: calculateDiscount automatically receives "tier" produced by fetchUser!
const calculateDiscount = Step.create('calculateDiscount', async (param: { tier: string }) => {
    const discount = param.tier === 'PRO' ? 0.2 : 0.05;
    return { discountPercentage: discount };
});

// 3. Compose into an executable flow
export const orderWorkflow = flow(fetchUser, calculateDiscount);

// 4. Run the flow with full type safety
async function main() {
    const result = await orderWorkflow.run({ userId: 'u_123' }, { pojo: true });

    console.log(result.name); // 'Alice'
    console.log(result.discountPercentage); // 0.20
    console.log(result.$steps.fetchUser); // { name: 'Alice', tier: 'PRO' }
}

main();