错误解决模块说明符:从API动态导入时做出反应

时间:2020-03-14 15:48:03

标签: reactjs rollup rollupjs dynamic-import

我正在尝试从API动态导入react组件库。 js文件已成功获取。通天塔的移植也成功发生了。如果我像import Dummy from './components/js/Dummy.js'这样从本地动态导入Dummy.js文件,它将起作用。但是,API导入失败,并出现以下错误。懒惰的反应也会发生相同的错误。我基本上想动态加载lib并将事件发布到它。我是新手,可以响应并进行前端开发。如果这太傻,请原谅!。

Error resolving module specifier: react 

我的App.js

import React, { lazy, Suspense } from 'react';
import './App.css';
import ErrorBoundary from './ErrorBoundary';

class App extends React.Component {

render(){

    const loader = () => import( /*webpackIgnore: true*/ `https://example.com/Dummy.js`);
    const Dummy = ReactDynamicImport({ loader });


    const LoadingMessage = () => (
      "I'm loading..."
    )

    return (
    <div className="App">
      <h1>Simplewidget</h1>
      <div id="simplewidget">
      <ErrorBoundary>
      <Suspense fallback={LoadingMessage}>
        <Dummy />
        </Suspense>
        </ErrorBoundary>
      </div>
    </div>
    );
  }
}

export default App;

rollup.config.js,经过多次尝试,我到达了以下配置https://github.com/jaebradley/example-rollup-react-component-npm-package/blob/master/rollup.config.js

// node-resolve will resolve all the node dependencies
import resolve from '@rollup/plugin-node-resolve';

import babel from 'rollup-plugin-babel';
import commonjs from '@rollup/plugin-commonjs';
import filesize from 'rollup-plugin-filesize';
import localResolve from 'rollup-plugin-local-resolve';

export default {
  input: 'src/components/js/Dummy.js',
  output: {
    file: 'dist/Dummy.js',
    format: 'es',
    globals: {
        react: 'React',
        'react-dom': 'ReactDOM'
      }
  },
  // All the used libs needs to be here
  external: [
    'react',
    'react-dom'
  ],
  plugins: [
  babel({
    exclude: 'node_modules/**',
  }),
  localResolve(),
  resolve({
    browser: true,
  }),
  commonjs(),
  filesize()
  ]
}

Dummy.js。我在dist / dummy.js中验证了babel移植正确发生。我将转译的版本上传到我的静态托管站点。

import React from "react";
import ReactDOM from "react-dom";

class Dummy extends React.Component {

  render() {
    return (
      <h1>Hello</h1>
    );
  }
}

export default Dummy;

在同一应用中,我有不同的目标来构建,启动服务器,创建汇总包等。因此,我非常有信心自己的汇总不会干扰应用程序的运行。

1 个答案:

答案 0 :(得分:1)

汇总捆绑配置不正确。我实际上想用esm模块来尝试用commonjs插件创建es输出。 “ react”上的错误是因为未解决。必须使其使用window.Rerolling捆绑时反应。另外,应将App.js汇总为esm软件包,以使其动态导入Dummy.js。在包含app.js包的HTML中,我必须包含react和react js umd脚本。

export default {
  input: "./src/components/js/Dummy.js",
  output: {
    file: './dist/Dummy.js',
    format: 'esm'
   },
   plugins: [
    babel({
      exclude: "node_modules/**"
    }),
    resolve(),
    externalGlobals({
    "react": "window.React",
    "react-dom": "window.ReactDOM",
    })
  ]
};