@frontjs/actions

Type-safe command/RPC layer with Standard Schema validation.

Part of the frontjs ecosystem.

Install

npm install @frontjs/actions valibot

Note: This package requires a Standard Schema compliant validator like Valibot, Zod, or ArkType.

Quick Start

1. Define Your Actions (Shared)

// shared/schema.ts
import * as v from 'valibot';

export const ActionSchema = {
  'todo:create': v.object({
    text: v.string([v.minLength(1)])
  }),
  'todo:delete': v.object({
    id: v.string()
  })
};

export type Actions = typeof ActionSchema;

2. Server (Create Router)

// server/api.ts
import { createRouter } from '@frontjs/actions/server';
import { ActionSchema } from '../shared/schema.js';

const router = createRouter(ActionSchema, {
  'todo:create': async (payload, ctx) => {
    // payload.text is validated and typed
    return await db.todos.add(payload.text);
  },
  'todo:delete': async (payload, ctx) => {
    return await db.todos.delete(payload.id);
  }
});

// Works with any framework (Next.js, Node, Bun, Cloudflare Workers)
export const POST = (req) => router.handle(req);

3. Client (Type-Safe Calls)

// client/app.ts
import { createClient } from '@frontjs/actions/client';
import type { Actions } from '../shared/schema.js';

const client = createClient<Actions>('/api/actions');

// ✅ Fully typed - autocomplete for action names and payloads
await client.send('todo:create', { text: 'Buy milk' });

Features

• Zero Trust: All payloads validated before reaching handlers
• Standard Schema: Works with Valibot, Zod, or ArkType
• Type-Safe: Full TypeScript support with type inference
• Tiny: Minimal runtime overhead
• Framework Agnostic: Works anywhere (Node, Bun, Edge, Cloudflare Workers)

API

Server

createRouter(schemaMap, handlers) => Router

• schemaMap: Map of action names to Standard Schema validators
• handlers: Map of action names to handler functions
• Returns router with handle(request, context?) method

Client

createClient<T>(endpoint) => Client<T>

• endpoint: API endpoint URL (e.g., '/api/actions')
• Returns client with send(action, payload) method

Documentation

See the main repository for complete documentation and integration guides.

Part of the frontjs Ecosystem

• @frontjs/core - Islands Architecture runtime
• @frontjs/actions - This package

License

ISC