解析模块失败：遇到保留关键字“接口”

Question

我尝试编写一个公共组件 rd-component ，其中包含一些跨所有项目使用的公共页面。当我导入此公共页面时，显示错误：

Module parse failed: The keyword 'interface' is reserved (15:0)

我做了一个最小的重现示例，这是使用公共页面的简单组件：

import './App.css';
import React from 'react';
import Goods from "rd-component/src/component/good/Goods";

const Chat: React.FC = (props) => {

  return (<Goods></Goods>);
}

export default Chat;

这是 Index.tsx：

import React from 'react';
import ReactDOM from 'react-dom/client';
import App from './App';
import './index.css';
import reportWebVitals from './reportWebVitals';
import Chat from './App';

const root = ReactDOM.createRoot(
  document.getElementById('root') as HTMLElement
);
root.render(
  <React.StrictMode>
    <Chat />
  </React.StrictMode>
);


reportWebVitals();

这是我的 package.json 包含所有包：

{
  "name": "react-demo",
  "version": "0.1.0",
  "private": true,
  "config-overrides-path": "src/config/config-overrides.js",
  "dependencies": {
    "@testing-library/jest-dom": "^5.16.5",
    "@testing-library/react": "^13.4.0",
    "@testing-library/user-event": "^13.5.0",
    "@textea/json-viewer": "^2.16.2",
    "@types/jest": "^27.5.2",
    "@types/node": "^16.18.21",
    "@types/react": "^18.0.30",
    "@types/react-dom": "^18.0.11",
    "antd": "^5.4.0",
    "prismjs": "^1.29.0",
    "react": "^18.2.0",
    "react-dom": "^18.2.0",
    "react-scripts": "5.0.1",
    "react-syntax-highlighter": "^15.5.0",
    "typescript": "^4.9.5",
    "web-vitals": "^2.1.4",
    "rd-component": "0.1.1"
  },
  "scripts": {
    "start": "react-app-rewired start",
    "build": "react-scripts build",
    "test": "react-scripts test",
    "eject": "react-scripts eject"
  },
  "eslintConfig": {
    "extends": [
      "react-app",
      "react-app/jest"
    ]
  },
  "browserslist": {
    "production": [
      ">0.2%",
      "not dead",
      "not op_mini all"
    ],
    "development": [
      "last 1 chrome version",
      "last 1 firefox version",
      "last 1 safari version"
    ]
  },
  "devDependencies": {
    "@types/react-syntax-highlighter": "^15.5.6",
    "customize-cra": "^1.0.0",
    "react-app-rewired": "^2.2.1"
  }
}

这是运行命令 npm run build 时的完整错误输出：

> react-demo@0.1.0 build
> react-scripts build

Creating an optimized production build...
Failed to compile.

Module parse failed: The keyword 'interface' is reserved (15:0)
File was processed with these loaders:
 * ./node_modules/source-map-loader/dist/cjs.js
You may need an additional loader to handle the result of these loaders.
| import { doPay } from "@/service/pay/PayService";
| 
> interface IGoodsProp {
|   appId: string;
| }

Answer 1

默认情况下，TypeScript（或者可能是 create-react-app，如果您正在使用的话）不会从 node_modules 编译模块。

您的 Goods 组件似乎就是这种情况：

import Goods from "rd-component/src/component/good/Goods";

{
  "dependencies": {
    // ...
    "rd-component": "0.1.1"
  }
}

默认配置假设 node_modules 中的所有内容都已准备好供纯 JavaScript 项目使用。

因此，TypeScript 编写的库组件预计已被转换为 JavaScript。

话虽这么说，您仍然可以尝试一种简单的解决方法，其中包括在项目 src 中添加一个指向库源的 TypeScript 文件的符号链接。

IIRC，不幸的是，某些构建引擎“太”智能，甚至可以通过符号链接查看实际路径...在这种情况下，您必须手动将库包含在编译范围中。

当然，正确的解决方案是预编译您的库。