@seanhogg/builderforce-webcontainers-core

The runtime-agnostic dev server behind BuilderForce WebContainers. It turns a project held in a VirtualFileSystem into browser-ready responses: compiled ES modules, CSS/JSON/asset wrappers and the HTML document. It never listens on anything; you call handle(path, search).

import * as esbuild from 'esbuild';
import { VirtualFileSystem, DevServer, createEsbuildTransformer } from '@seanhogg/builderforce-webcontainers-core';

const fs = new VirtualFileSystem();
fs.writeTree({ 'index.html': '...', 'src/main.tsx': '...' });
const server = new DevServer({ fs, transformer: createEsbuildTransformer(esbuild), base: '/preview/' });
const res = await server.handle('/src/main.tsx'); // { status, headers, body }

For the in-browser runtime, use @seanhogg/builderforce-webcontainers. MIT licensed.