@taucad/runtime

A multi-kernel CAD runtime for browser and Node.js. Run multiple CAD engines from a single, unified API with middleware support, automatic kernel selection, autonomous rendering, and Web Worker isolation.

import { createRuntimeClient, presets } from '@taucad/runtime';

const client = createRuntimeClient(presets.all());

const result = await client.export('step', {
  code: {
    'box.ts': `
    import { makeBaseBox } from 'replicad';
    export default function main() {
      return makeBaseBox(10, 20, 30);
    }
  `,
  },
});

// result.data -> { name: 'box.step', bytes: Uint8Array, mimeType: 'model/step' }

Or configure individual plugins for tree-shaking:

import { createRuntimeClient } from '@taucad/runtime';
import { replicad } from '@taucad/runtime/kernels';
import { esbuild } from '@taucad/runtime/bundler';

const client = createRuntimeClient({
  kernels: [replicad()],
  bundlers: [esbuild()],
});

Supported Kernels

Key Capabilities

• Multi-kernel runtime -- Switch between CAD engines based on file type or explicit selection.
• Autonomous rendering -- setFile and setParameters trigger autonomous rendering with file watching, debounced re-renders, and event-driven geometry push.
• Plugin architecture -- Extend with custom kernels, middleware, and bundlers via defineKernel, defineMiddleware, and defineBundler.
• Middleware pipeline -- Add caching, coordinate transforms, and edge detection with an onion-model middleware system.
• Web Worker isolation -- All kernel computation runs in Web Workers with MessagePort-based communication and SharedArrayBuffer abort signaling.
• Render cancellation -- Abort in-progress renders instantly via cooperative proxy abort, async boundary checks, and generation counters.
• Filesystem abstraction -- Use Node.js fs, in-memory, or browser-based filesystems interchangeably.
• TypeScript bundling -- Built-in esbuild integration for JS/TS kernel inputs.

Part of the Tau Ecosystem

@taucad/runtime is the CAD runtime that powers Tau, the AI-powered CAD platform. The package is designed for standalone use -- you can integrate it into any JavaScript application without the Tau editor.

The Tau ecosystem also includes:

• Tau Editor -- A web-based CAD editor with AI-assisted modeling (documentation coming soon)
• Tau Platform -- Cloud infrastructure for CAD collaboration (documentation coming soon)

Explore the Documentation

• Installation -- Set up the package in your project
• Quick Start -- Render your first 3D model in under 4 minutes
• Guides -- Task-oriented how-to guides for common workflows
• Concepts -- Understand the architecture and design decisions
• API Reference -- Complete type documentation for every public API