Reactjs – Webpack says 'you may need an additional loader' in React.js project

I created a React project with two workspaces, ‘webmail’ and ‘component’. I put a small tsx file in ‘component’, I want to use that in ‘webmail’. This is the package.json of component:

{
  "name": "@monorepo/component",
  "version": "0.1.0",
  "description": "Creating a component module project",
  "main": "src/index.tsx",
  "scripts": {
    "dev": "webpack serve",
    "build": "webpack"
  },
  "keywords": [
    "react",
    "component",
    "npm"
  ],
  "author": "Christine",
  "license": "MIT",
  "peerDependencies": {
    "react": "^18.2.0",
    "react-dom": "^18.2.0"
  },
  "devDependencies": {
    "@babel/core": "^7.24.0",
    "@babel/preset-env": "^7.12.11",
    "@babel/preset-react": "^7.18.6",
    "@babel/register": "^7.12.10",
    "babel-loader": "^9.1.3",
    "html-webpack-plugin": "^5.6.0",
    "webpack": "^5.90.3",
    "webpack-cli": "^5.1.4"
  },
  "dependencies": {
    "react": "^18.2.0",
    "react-dom": "^18.2.0"
  }
}

This is webpack.config.js in component

const path = require('path');

module.exports = {
    entry: {
        index: { import: "./src/index.tsx" }
    },
    output: {
        path: path.resolve(__dirname, "dist"),
    },
    mode: "production",
    module: {
        rules: [
            {
                test: /.tsx?$/,
                exclude: /node_modules/,
                use: {
                    loader: "babel-loader",
                    options: {
                        presets: [
                            '@babel/preset-env',
                            '@babel/preset-react'
                        ]
                    }
                }
            }
        ]
    },
}

This is ‘MyComponent’:

import React from "react-dom";

interface ComponentProps {
   label: string
}

export const MyComponent=({label, ...props}: ComponentProps)=> {

    return (
        <div>
            <button>{label}</button>
        </div>
    );
}

This is the tsx file that uses MyComponent:

import './css/App.css';
import React from 'react'
import { MyComponent } from "@monorepo/component"
function App() {

   return (
        <div className="flex flex-col h-screen w-screen">
            <nav className="nav">
                <div className='flex-wrap flex justify-between w-4/6'>
                    <div className='flex-wrap flex '>
              <MyComponent label='my button'/>

                    </div>
                   
                </div>
            </nav>
         </div>
    );
}

export default App;

What happens is that the webmail app launches, then complains about

ERROR in ../component/src/index.tsx 4:0
Module parse failed: The keyword 'interface' is reserved (4:0)
File was processed with these loaders:
 * ../node_modules/@pmmmwh/react-refresh-webpack-plugin/loader/index.js
You may need an additional loader to handle the result of these loaders.
| 
| import React from "react-dom";
> interface ComponentProps {
|    label: string
| }

Edit:
If I remove the ‘interface’ in the component code, the error I get is

Module parse failed: Unexpected token (9:8)
File was processed with these loaders:
 * ../node_modules/@pmmmwh/react-refresh-webpack-plugin/loader/index.js
You may need an additional loader to handle the result of these loaders.
| 
|     return (
>         <div>
|             <button>{label}</button>
|         </div>
ERROR in ../component/src/index.tsx 9:8

If I change the ‘index.tsx’ in the component to ‘index.js’, I get

Add @babel/preset-react (https://github.com/babel/babel/tree/main/packages/babel-preset-react) to the 'presets' section of your Babel config to enable transformation.
If you want to leave it as-is, add @babel/plugin-syntax-jsx (https://github.com/babel/babel/tree/main/packages/babel-plugin-syntax-jsx) to the 'plugins' section to enable parsing.

Somehow, the react preset for babel isn’t picked up, I think. I have tried putting the preset line in package.json or in webpack.config.json or in babelrc.json. Is there anything wrong in my configs?

Solution

I used this as an example for my project. I now recreated that example locally, it gave me the same error that I had for a tsx component. After putting this

{
  "compilerOptions": {
    "target": "ES6",
    "module": "ES2015",
    "outDir": "dist",
    "allowSyntheticDefaultImports": true,
    "jsx": "react"
  },
  "include": [
    "src/**/*.tsx"
  ],
  "exclude": [
    "node_modules"
  ]
}

in tsconfig.js, and adding the preset-typescript line suggested in two answers, the problem was solved, or so it seems for now.