Steedos Webapps

Steedos Webapps | Steedos 软件包自定义 React 应用

Overview | 概述

Steedos packages can contain React + Vite sub-projects in the webapps/ directory. Each webapp is an independent Vite application that can be developed standalone and compiled as an IIFE script that self-registers as an amis Renderer component.

Steedos 软件包通过 webapps/ 目录管理 React 子项目。每个子项目是独立的 Vite 应用，可独立开发调试，也可编译为 amis 自注册组件。

Directory Structure | 目录结构

my-package/                              # Steedos package root
├── webapps/                             # React sub-projects
│   ├── designer/                        # webapp 1
│   │   ├── src/
│   │   │   ├── components/              # React components
│   │   │   ├── amis-entry.ts            # amis registration entry
│   │   │   ├── amis-jsx-shim.ts         # JSX Runtime bridge
│   │   │   └── amis-renderer.css
│   │   ├── dist/amis-renderer/          # Build output
│   │   ├── vite.config.ts               # Standard dev config
│   │   ├── vite.amis.config.ts          # amis IIFE build config
│   │   ├── package.json
│   │   └── tailwind.config.js
│   │
│   └── dashboard/                       # webapp 2
│       ├── src/
│       │   ├── components/
│       │   ├── amis-entry.ts
│       │   └── amis-jsx-shim.ts
│       ├── vite.amis.config.ts
│       └── package.json
│
├── main/default/
│   ├── client/                          # Client loader files
│   │   ├── designer.client.js           # Loads designer amis renderer
│   │   └── dashboard.client.js          # Loads dashboard amis renderer
│   └── routes/                          # Express SPA routers
│       ├── designer.router.js           # SPA access for designer
│       └── dashboard.router.js          # SPA access for dashboard
│
├── public/                              # Deployed output (copied from each webapp)
│   ├── designer/
│   │   ├── amis-renderer.js
│   │   └── amis-renderer.css
│   └── dashboard/
│       ├── amis-renderer.js
│       └── amis-renderer.css
│
├── package.json                         # Package root package.json
└── package.service.js                   # Moleculer service definition

Key Concepts:

• Each webapps/ subdirectory is an independent React + Vite project
• Two build modes: standard Vite build (dev) + IIFE build (amis component)
• IIFE output is copied to public/<webapp-name>/, served as static files by Steedos
• main/default/client/<webapp-name>.client.js triggers loading of the IIFE into the Steedos frontend
• Each webapp is isolated — can use different dependencies and versions

Scaffold Selection | 脚手架选择

Before creating a webapp, choose a UI scaffold. This determines which component library and styling approach to use. You can use any React-compatible UI library — below are two recommended options.

创建 webapp 前，先选择 UI 脚手架，决定使用哪个组件库和样式方案。支持任意 React 兼容的 UI 库，以下是两个推荐选项。

Key Differences | 关键区别

antd Scaffold Setup | antd 脚手架

cd my-package/webapps
npm create vite@latest my-widget -- --template react-ts
cd my-widget
npm install
npm install antd
npm install -D @tailwindcss/postcss autoprefixer postcss-prefix-selector terser

In vite.amis.config.ts, mark antd as external:

rollupOptions: {
  external: ['react', 'react-dom', 'antd'],
  output: {
    globals: {
      react: 'amisRequire("react")',
      'react-dom': 'amisRequire("react-dom")',
      'antd': 'antd',
    },
  },
},

shadcn/ui Scaffold Setup | shadcn/ui 脚手架

cd my-package/webapps
npm create vite@latest my-widget -- --template react-ts
cd my-widget
npm install
npx shadcn@latest init
npm install -D @tailwindcss/postcss autoprefixer postcss-prefix-selector terser
npm install -D tailwindcss

In vite.amis.config.ts, do NOT externalize antd (shadcn/ui doesn't use it):

rollupOptions: {
  external: ['react', 'react-dom'],
  output: {
    globals: {
      react: 'amisRequire("react")',
      'react-dom': 'amisRequire("react-dom")',
    },
  },
},

⚠️ shadcn/ui uses Tailwind v4 — you MUST add the 3 PostCSS workaround plugins (see Tailwind CSS v4 Workarounds section).

Other Scaffolds | 其他脚手架

Any React-compatible UI library works. The core requirements are the same:

1. Mark react and react-dom as external in rollup (use amisRequire)
2. If the library is already on the host page (like antd), mark it as external too
3. Use postcss-prefix-selector for CSS isolation
4. If using Tailwind v4, add the 3 PostCSS workaround plugins

Creating a New Webapp | 创建新 webapp

Step 1: Initialize Vite Project | 初始化

cd my-package/webapps
npm create vite@latest my-widget -- --template react-ts
cd my-widget
npm install

Step 2: Add Build Dependencies | 添加构建依赖

# Common dependencies (both scaffolds)
npm install -D @tailwindcss/postcss autoprefixer postcss-prefix-selector terser

# antd scaffold
npm install antd

# shadcn/ui scaffold
npx shadcn@latest init
npm install -D tailwindcss

Step 3: Create amis Integration Files | 创建 amis 集成文件

Each webapp needs 3 amis-specific files:

webapps/my-widget/src/
├── amis-entry.ts          # Registration entry
├── amis-jsx-shim.ts       # JSX bridge (copy from other webapp)
└── amis-renderer.css      # Style entry (imported by amis-entry.ts)

Step 4: Configure Build Scripts | 配置构建脚本

In the webapp's package.json:

{
  "scripts": {
    "dev": "vite",
    "build": "tsc -b && vite build",
    "build:amis": "vite build --config vite.amis.config.ts && rm -rf ../../public/my-widget && cp -R dist/amis-renderer ../../public/my-widget",
    "build:all": "tsc -b && vite build && vite build --config vite.amis.config.ts && rm -rf ../../public/my-widget && cp -R dist/amis-renderer ../../public/my-widget"
  }
}

Step 5: Create SPA Router | 创建 SPA 路由

Create main/default/routes/<webapp-name>.router.js to serve the webapp as a standalone SPA:

创建 main/default/routes/<webapp-name>.router.js，让 webapp 可以作为独立 SPA 访问：

// main/default/routes/my-widget.router.js
'use strict';
const express = require('express');
const router = express.Router();
const { requireAuthentication } = require("@steedos/auth");
const path = require('path');

const packageRoot = path.dirname(require.resolve('@steedos-labs/my-package/package.json'));
const webappDistPath = path.join(packageRoot, 'webapps', 'my-widget', 'dist');
const amisRendererDistPath = path.join(webappDistPath, 'amis-renderer');

// Main page entry (requires auth)
router.get('/api/my-package/my-widget', requireAuthentication, async (req, res) => {
  try {
    if (process.env.NODE_ENV === 'development') {
      return res.redirect('http://localhost:5173');
    }
    res.sendFile(path.join(webappDistPath, 'index.html'), { dotfiles: 'allow' });
  } catch (e) {
    res.status(500).send({ errors: [{ errorMessage: e.message }] });
  }
});

// Static assets
router.use('/api/my-package/my-widget', express.static(webappDistPath));

// SPA fallback (frontend routing support)
router.use('/api/my-package/my-widget', (req, res, next) => {
  if (req.method !== 'GET') return next();
  if (path.extname(req.path)) return next();
  if (req.path === '/' || req.path === '') return next();
  requireAuthentication(req, res, () => {
    try {
      if (process.env.NODE_ENV === 'development') {
        return res.redirect('http://localhost:5173');
      }
      res.sendFile(path.join(webappDistPath, 'index.html'), { dotfiles: 'allow' });
    } catch (e) {
      res.status(500).send({ errors: [{ errorMessage: e.message }] });
    }
  });
});

// amis renderer static assets
router.use('/api/my-package/my-widget-amis', express.static(amisRendererDistPath));

exports.default = router;

Also update the webapp's vite.config.ts to set base matching the router path:

同时更新 webapp 的 vite.config.ts，设置 base 与路由路径一致：

// webapps/my-widget/vite.config.ts
export default defineConfig(({ command }) => ({
  base: command === 'build' ? '/api/my-package/my-widget/' : '/',
  // ... other config
}))

Step 6: Register in Package Root | 在软件包根目录注册

{
  "name": "@steedos-labs/my-package",
  "files": [
    "main/default/client",
    "main/default/routes",
    "webapps/my-widget/dist",
    "public/my-widget",
    "package.service.js"
  ],
  "scripts": {
    "build:my-widget": "cd webapps/my-widget && npm run build:all",
    "build:webapps": "npm run build:my-widget"
  }
}

Key Files | 关键文件

vite.amis.config.ts — IIFE Build Config

Compiles React components into self-executing IIFE scripts loadable by amis.

import { defineConfig } from 'vite'
import react from '@vitejs/plugin-react'
import tailwindcss from '@tailwindcss/postcss'
import autoprefixer from 'autoprefixer'
import path from 'path'

import { createRequire } from 'module'
const require = createRequire(import.meta.url)
const prefixSelector = require('postcss-prefix-selector')

// CSS scope prefix — all styles scoped under this selector
const SCOPE = '.my-widget'

export default defineConfig({
  plugins: [react({ jsxRuntime: 'classic' })],

  resolve: {
    alias: {
      '@': path.resolve(__dirname, './src'),
      'react/jsx-runtime': path.resolve(__dirname, './src/amis-jsx-shim.ts'),
      'react/jsx-dev-runtime': path.resolve(__dirname, './src/amis-jsx-shim.ts'),
    },
  },

  define: {
    'process.env.NODE_ENV': JSON.stringify('production'),
    'process.env': JSON.stringify({}),
  },

  build: {
    outDir: 'dist/amis-renderer',
    emptyOutDir: true,
    lib: {
      entry: path.resolve(__dirname, 'src/amis-entry.ts'),
      name: 'MyWidget',
      formats: ['iife'],
      fileName: () => 'amis-renderer.js',
    },
    rollupOptions: {
      external: ['react', 'react-dom', 'antd'],
      output: {
        globals: {
          react: 'amisRequire("react")',
          'react-dom': 'amisRequire("react-dom")',
          'antd': 'antd',
        },
        assetFileNames: 'amis-renderer.[ext]',
      },
    },
    assetsInlineLimit: 8192,
    cssCodeSplit: false,
    minify: 'terser',
  },

  css: {
    postcss: {
      plugins: [
        tailwindcss(),
        autoprefixer(),
        prefixSelector({
          prefix: SCOPE,
          transform(prefix, selector, prefixedSelector, _filePath, rule) {
            if (selector === ':root') return selector;
            if (/^(html|body)(\s|,|$)/.test(selector)) return selector;
            const parent = rule.parent;
            if (parent?.type === 'atrule' && /^keyframes/.test(parent.name)) return selector;
            return prefixedSelector;
          },
        }),
      ],
    },
  },
})

Critical configuration points:

amis-jsx-shim.ts — JSX Runtime Bridge

Rollup external can only externalize react, not the react/jsx-runtime sub-path. Third-party dependencies (e.g. @tiptap/react) import from react/jsx-runtime, which would bundle an incompatible React copy. This shim delegates jsx()/jsxs() to the externalized React.createElement().

This file is identical across all webapps — copy directly without modification.

import React from 'react';

export function jsx(
  type: React.ElementType,
  props: Record<string, unknown>,
  key?: string,
): React.ReactElement {
  const { children, ...rest } = props;
  if (key !== undefined) (rest as Record<string, unknown>).key = key;
  return children !== undefined
    ? React.createElement(type, rest as React.Attributes, children as React.ReactNode)
    : React.createElement(type, rest as React.Attributes);
}

export function jsxs(
  type: React.ElementType,
  props: Record<string, unknown>,
  key?: string,
): React.ReactElement {
  const { children, ...rest } = props;
  if (key !== undefined) (rest as Record<string, unknown>).key = key;
  if (Array.isArray(children)) {
    return React.createElement(type, rest as React.Attributes, ...children);
  }
  return children !== undefined
    ? React.createElement(type, rest as React.Attributes, children as React.ReactNode)
    : React.createElement(type, rest as React.Attributes);
}

export const jsxDEV = jsx;
export const Fragment = React.Fragment;

amis-entry.ts — Registration Entry

IIFE build entry point. Imports styles, defines a bridge component, registers via amisLib.Renderer().

import './amis-renderer.css';
import { MyReactComponent } from './components/MyReactComponent';

declare global {
  function amisRequire(mod: string): any;
}

function register() {
  if (typeof amisRequire === 'undefined') {
    console.error('[my-widget] amisRequire is not defined. Load amis SDK first.');
    return;
  }

  const React = amisRequire('react');
  const amisLib = amisRequire('amis');

  if (!amisLib?.Renderer) {
    console.error('[my-widget] amis.Renderer not found.');
    return;
  }

  // Bridge component: amis props → React component props
  function MyWidget(props: any) {
    const { $schema, data, dispatchEvent } = props;

    // Register to amis ScopedContext (makes getComponentById work)
    const ScopedContext = amisLib.ScopedContext;
    const scoped = React.useContext(ScopedContext);
    const compRef = React.useRef(null);
    const scopedRef = React.useRef(null);

    const componentMethods = {
      getValue: () => compRef.current?.getValue(),
      validate: async () => compRef.current?.validate(),
    };

    if (scopedRef.current === null) {
      scopedRef.current = { ...componentMethods };
    } else {
      Object.assign(scopedRef.current, componentMethods);
    }

    Object.defineProperty(scopedRef.current, 'props', {
      get: () => props,
      configurable: true,
    });

    React.useEffect(() => {
      if (!scoped || !($schema.id || props.id)) return;
      scoped.registerComponent(scopedRef.current);
      return () => scoped.unRegisterComponent(scopedRef.current);
    }, [$schema.id || props.id]);

    // Read custom properties from $schema (configured in amis JSON schema)
    const title = $schema.title || '';
    const config = $schema.config || {};

    // Read from amis data scope
    const contextValue = data?.someKey || '';

    // Event callback — dispatch events to amis
    const handleChange = (val: any) => {
      dispatchEvent?.('change', { value: val });
    };

    // Render the actual React component
    return React.createElement(MyReactComponent, {
      ref: compRef,
      title,
      config,
      value: contextValue,
      onChange: handleChange,
      className: 'my-widget',  // MUST match CSS scope prefix
    });
  }

  // Register as amis Renderer
  amisLib.Renderer({
    type: 'my-widget',    // type name used in amis JSON schema
    autoVar: true,
  })(MyWidget);

  console.log('[my-widget] amis Renderer registered.');
}

register();

amis Props Reference | amis 传入的 Props

Using in Amis Schema | 在 amis Schema 中使用

After registration, reference via type in amis JSON schema:

{
  "type": "my-widget",
  "id": "widget1",
  "title": "Hello World",
  "config": { "theme": "dark" },
  "onEvent": {
    "change": {
      "actions": [
        {
          "actionType": "setValue",
          "args": { "value": "${event.data.value}" }
        }
      ]
    }
  }
}

API v6 Response Structures | API v6 响应数据结构

When calling Steedos API v6 endpoints from webapp code (fetch/axios), use the correct response format:

// List records — response has { data, totalCount }
const res = await fetch('/api/v6/data/orders?skip=0&top=20');
const { data: orders, totalCount } = await res.json();

// Single record — response IS the record
const res = await fetch(`/api/v6/data/orders/${id}`);
const order = await res.json(); // { _id, name, status, ... }

// Create record — response IS the created record
const res = await fetch('/api/v6/data/orders', { method: 'POST', body: JSON.stringify(record) });
const created = await res.json(); // { _id, name, created, ... }

// Call function — response IS whatever the function returns
const res = await fetch('/api/v6/functions/orders/approve', {
  method: 'POST',
  body: JSON.stringify({ id: orderId })
});
const result = await res.json(); // e.g. { message: "Approved", success: true }

⚠️ skip and top are REQUIRED for all list endpoints (/api/v6/data/, /api/v6/tables/, /api/v6/direct/).

📖 For complete API v6 documentation (all endpoints, filter operators, complex filters, authentication), load the steedos-server-api skill.

📖 如需 API v6 完整文档（所有端点、筛选运算符、复合筛选、认证方式），请加载 steedos-server-api 技能。

Express Router for SPA Access | 通过 Router 提供 SPA 访问

Note: The SPA router is created by default in Step 5 of "Creating a New Webapp". This section provides detailed reference for the router implementation.

注意： SPA 路由已在「创建新 webapp」Step 5 中默认创建。本节提供路由实现的详细参考。

Webapps serve as standalone SPA applications via Express routes in main/default/routes/:

'use strict';
const express = require('express');
const router = express.Router();
const { requireAuthentication } = require("@steedos/auth");
const path = require('path');

const packageRoot = path.dirname(require.resolve('@steedos-labs/my-package/package.json'));
const webappDistPath = path.join(packageRoot, 'webapps', 'my-widget', 'dist');
const amisRendererDistPath = path.join(webappDistPath, 'amis-renderer');

// Main page entry (requires auth)
router.get('/api/my-package/my-widget', requireAuthentication, async (req, res) => {
  try {
    if (process.env.NODE_ENV === 'development') {
      return res.redirect('http://localhost:5173');
    }
    res.sendFile(path.join(webappDistPath, 'index.html'), { dotfiles: 'allow' });
  } catch (e) {
    res.status(500).send({ errors: [{ errorMessage: e.message }] });
  }
});

// Static assets
router.use('/api/my-package/my-widget', express.static(webappDistPath));

// SPA fallback (frontend routing support)
router.use('/api/my-package/my-widget', (req, res, next) => {
  if (req.method !== 'GET') return next();
  if (path.extname(req.path)) return next();
  if (req.path === '/' || req.path === '') return next();
  requireAuthentication(req, res, () => {
    try {
      if (process.env.NODE_ENV === 'development') {
        return res.redirect('http://localhost:5173');
      }
      res.sendFile(path.join(webappDistPath, 'index.html'), { dotfiles: 'allow' });
    } catch (e) {
      res.status(500).send({ errors: [{ errorMessage: e.message }] });
    }
  });
});

// amis renderer static assets
router.use('/api/my-package/my-widget-amis', express.static(amisRendererDistPath));

exports.default = router;

Important: The webapp's vite.config.ts base must match the router path:

base: command === 'build' ? '/api/my-package/my-widget/' : '/',

Client Loader File | 客户端加载文件

⚠️ Required: Each webapp MUST have a client loader file at main/default/client/<webapp-name>.client.js. This file tells Steedos to load the compiled amis renderer JS and CSS into the frontend. Without it, the amis component will NOT be available in pages.

⚠️ 必须：每个 webapp 都必须有 main/default/client/<webapp-name>.client.js 加载文件。没有此文件，amis 自定义组件不会被加载到前端。

File Naming | 命名规则

The file name MUST match the webapp/public folder name:

File Content | 文件内容

// main/default/client/my-widget.client.js
waitForThing(window, 'antd').then(function(){
    loadJs('/my-widget/amis-renderer.js');
    loadCss('/my-widget/amis-renderer.css')
})

How it works:

1. waitForThing(window, 'antd') — Waits until window.antd is available. The IIFE uses amisRequire("react") and amisRequire("amis") which depend on antd being loaded first.
2. loadJs('/my-widget/amis-renderer.js') — Loads the compiled IIFE script from public/my-widget/. The script self-executes and registers the amis Renderer.
3. loadCss('/my-widget/amis-renderer.css') — Loads the scoped CSS from public/my-widget/.

The paths (/my-widget/...) correspond to the public/my-widget/ directory, which Steedos serves as static files.

waitForThing、loadJs、loadCss 是 Steedos 前端内置的全局工具函数，无需额外引入。

CSS Isolation | CSS 隔离

Scope Prefix | 作用域前缀

postcss-prefix-selector adds a scope class to all CSS rules:

/* Before */
.btn { color: red; }

/* After */
.my-widget .btn { color: red; }

The component root element MUST have the matching class name (passed via className in amis-entry.ts).

Tailwind CSS v4 Workarounds

Tailwind v4 introduces @property, @supports, @layer — global CSS features that conflict with the host page. Add these 3 PostCSS plugins after prefixSelector in vite.amis.config.ts:

// 1. Remove @property — global, pollutes host page CSS property registry
function removeAtProperty() {
  return {
    postcssPlugin: 'remove-at-property',
    AtRule: { property(rule) { rule.remove() } },
  }
}
removeAtProperty.postcss = true

// 2. Unwrap @supports fallbacks — @property removed, so variable defaults must apply unconditionally
function unwrapTwSupports() {
  return {
    postcssPlugin: 'unwrap-tw-supports',
    AtRule: {
      supports(atRule) {
        if (atRule.params.includes('-webkit-hyphens') || atRule.params.includes('-moz-orient')) {
          atRule.nodes?.length ? atRule.replaceWith(atRule.nodes) : atRule.remove()
        }
      },
    },
  }
}
unwrapTwSupports.postcss = true

// 3. Remove @layer — host page CSS not in layers, layer styles can never override
function removeAtLayer() {
  return {
    postcssPlugin: 'remove-at-layer',
    AtRule: {
      layer(atRule) {
        atRule.nodes?.length ? atRule.replaceWith(atRule.nodes) : atRule.remove()
      },
    },
  }
}
removeAtLayer.postcss = true

Multi-Webapp Management | 多 webapp 管理

Package Root Configuration

{
  "name": "@steedos-labs/my-package",
  "files": [
    "main/default/client",
    "main/default/routes",
    "webapps/designer/dist",
    "webapps/dashboard/dist",
    "public/designer",
    "public/dashboard",
    "package.service.js"
  ],
  "scripts": {
    "build:designer": "cd webapps/designer && npm run build:all",
    "build:dashboard": "cd webapps/dashboard && npm run build:all",
    "build:webapps": "npm run build:designer && npm run build:dashboard",
    "release": "npm run build:webapps && npm publish"
  }
}

Webapp Independence | webapp 独立性

• Each webapp is a fully independent Vite project with its own node_modules
• Different webapps can use different dependency versions
• CSS scope prefixes are unique per webapp — no style conflicts
• amis type names must be globally unique (e.g. workflow-form-v2, dashboard-chart)
• amis-jsx-shim.ts is identical across all webapps — copy directly

Development Workflow | 开发工作流

# ---- Development ----
cd webapps/my-widget && npm install
npm run dev                    # http://localhost:5173

# ---- Build ----
npm run build:amis             # IIFE only → dist/amis-renderer/ → public/my-widget/
npm run build:all              # Standard + IIFE

# ---- Test in Steedos ----
# Start Steedos — public/my-widget/ auto-served as static files
# amis pages load amis-renderer.js and auto-register the component

# ---- Publish ----
cd ../.. && npm publish        # files field ensures public/my-widget is included

Minimum Checklist | 最小化清单

Post-Development Prompt | 开发完成后提示

After completing webapp development and configuration, always inform the user about the available access methods:

webapp 开发和配置完成后，务必告知用户可用的访问方式：

✅ Webapp {webapp-name} 开发完成！你可以通过以下方式访问：

• amis 组件方式：在 amis Schema 中使用 "type": "{webapp-name}" 嵌入到任意页面
• 独立 SPA 方式：通过浏览器访问 {ROOT_URL}/api/{package-name}/{webapp-name}
• 开发模式：运行 cd webapps/{webapp-name} && npm run dev，访问 http://localhost:5173

FAQ | 常见问题

Q: Why can't React be bundled into the IIFE? A: amis SDK ships its own React. Bundling two copies causes Hooks errors and broken Context sharing. Must use amisRequire("react") to reuse amis's React.

Q: Third-party lib imports react/jsx-runtime? A: amis-jsx-shim.ts delegates jsx()/jsxs() to React.createElement(). Map both react/jsx-runtime and react/jsx-dev-runtime in Vite aliases.

Q: process is not defined error? A: Some dependencies reference process.env.NODE_ENV. Add to Vite define:

define: {
  'process.env.NODE_ENV': JSON.stringify('production'),
  'process.env': JSON.stringify({}),
}

Q: Style conflicts with host page? A: postcss-prefix-selector + root element class name. Exclude :root, html, body, @keyframes from prefixing.

Q: How to expose component methods to amis getComponentById? A: Use amisLib.ScopedContext in the bridge component, register via scoped.registerComponent(), and mount methods like getValue() and validate().

Q: How to handle antd? A: When host page loads antd via CDN, mark antd in rollup external. For dayjs locale (antd DatePicker dependency), handle it in amis-entry.ts.