尝试导入 ReactToastify.css 时如何修复“TypeError：rule.assign 不是函数”

Posted 2023-03-07

【中文标题】尝试导入 ReactToastify.css 时如何修复“TypeError：rule.assign 不是函数”

【英文标题】：How to fix "TypeError: rule.assign is not a function" when trying to import ReactToastify.css

【发布时间】：2022-01-18 03:07:30

【问题描述】：

我可以import ToastContainer from 'react-toastify 没有问题，但是当我尝试 import 'react-toastify/dist/ReactToastify.css';，报错：

./node_modules/next/dist/build/webpack/loaders/css-loader/src/index.js??ruleSet[1].rules[2].oneOf[7].use[1]!./node_modules/next/dist/build/webpack/loaders/postcss-loader/src/index.js??ruleSet[1].rules[2].oneOf[7].use[2]!./node_modules/react-toastify/dist/ReactToastify.css

TypeError: rule.assign 不是函数

我正在使用启用了“jit”模式的 next.js 和 tailwind css。

_app.js：

import 'tailwindcss/tailwind.css';
import '../public/css/syles.css';
import NavBar from '../components/NavBar';
// dynamic(
//   () =>
//     import('!style-loader!css-loader!react-toastify/dist/ReactToastify.css'),
//    s-s-r: false              <== tried this as a potential fix, but didn't work.
// );
// import dynamic from 'next/dynamic';

import  ToastContainer  from 'react-toastify';
import 'react-toastify/dist/ReactToastify.css';

function MyApp( Component, pageProps ) 
  return (
    <>
      <ToastContainer position='top-center' />
      <NavBar />
      <Component ...pageProps />;
    </>
  );


export default MyApp;

package.json:

  "name": "client",
  "version": "1.0.0",
  "description": "",
  "main": "index.js",
  "scripts": 
    "dev": "node server.js",
    "build": "next build",
    "start": "next start",
    "lint": "next lint"
  ,
  "keywords": [],
  "author": "",
  "license": "ISC",
  "dependencies": 
    "@headlessui/react": "^1.4.2",
    "@heroicons/react": "^1.0.5",
    "@tailwindcss/line-clamp": "^0.2.2",
    "axios": "^0.24.0",
    "bootstrap": "^5.1.3",
    "express": "^4.17.1",
    "heroicons": "^1.0.5",
    "http-proxy-middleware": "^2.0.1",
    "next": "^12.0.7",
    "react": "^17.0.2",
    "react-dom": "^17.0.2",
    "react-toastify": "^8.1.0"
  ,
  "devDependencies": 
    "autoprefixer": "^10.4.0",
    "postcss": "^8.4.3",
    "postcss-preset-env": "^7.0.1",
    "tailwindcss": "^2.2.19"
  

任何建议将不胜感激。谢谢。

【问题讨论】：

我无法重现该问题。您是否尝试过删除 .next 文件夹并再次运行应用程序？

@juliomalves 是的，我试过了，但还是一样的错误，除了现在它还显示TypeError: rule.assign is not a function at runMicrotasks (<anonymous>)

【参考方案1】：

好的，所以我通过 injectStyle 解决了它并在 useEffect() 中执行。

我参考了这个页面：https://fkhadra.github.io/react-toastify/how-to-style/#inject-style-on-demand

_app.js：

import 'tailwindcss/tailwind.css';
import '../public/css/syles.css';
import NavBar from '../components/NavBar';
import  useEffect  from 'react';

import  ToastContainer  from 'react-toastify';
import  injectStyle  from 'react-toastify/dist/inject-style';

function MyApp( Component, pageProps ) 
  useEffect(() => 
    injectStyle();
  , []);
  return (
    <>
      <ToastContainer position='top-center' />
      <NavBar />
      <Component ...pageProps />;
    </>
  );


export default MyApp;