Laravel Mix + React 编译后生成了多个文件，且覆盖了已有文件

我使用一个react模板，并且使用Larave Mix将它跟laravel结合起来,我最终使用了npm run dev命令，结果它给我在当前文件夹下编译出来很多的文件，我尝试阅读了laravel mix，似乎对react提及很少。
这是编译之后生成的目录结构：

这是编译过程中的一些提示：

webpack.mix.js：

const mix = require('laravel-mix');
mix.react('app.js', 'public/admin/js');

package.json：

{
    "name": "laravel-admin",
    "version": "4.1.0",
    "description": "Gogo - React Bootstrap 4 Admin Dashboard Template - for noecs",
    "private": true,
    "dependencies": {
        "@glidejs/glide": "^3.3.0",
        "axios": "^0.18.0",
        "chart.js": "^2.7.2",
        "react": "^16.8.6",
        "react-autosuggest": "^9.3.4",
        "react-big-calendar": "^0.20.3",
        "react-chartjs-2": "^2.7.4",
        "react-circular-progressbar": "^1.0.0",
        "react-contextmenu": "^2.9.4",
        "react-datepicker": "^1.5.0",
        "react-dom": "^16.8.6",
        "react-redux": "5.0.7",
        "react-router-dom": "^4.2.2",
        "react-scripts": "^3.0.1",
        "react-select": "^2.0.0-beta.7",
        "reactstrap": "^6.5.0",
        "redux": "^4.0.1",
        "redux-saga": "^1.0.2",
        "sortablejs": "^1.6.1",
        "video.js": "^7.6.0",
        "yup": "^0.27.0"
    },
    "main": "app.js",
    "scripts": {
        "dev": "NODE_ENV=development node_modules/webpack/bin/webpack.js --progress --hide-modules --config=node_modules/laravel-mix/setup/webpack.config.js",
        "watch": "NODE_ENV=development node_modules/webpack/bin/webpack.js --watch --progress --hide-modules --config=node_modules/laravel-mix/setup/webpack.config.js",
        "hot": "NODE_ENV=development webpack-dev-server --inline --hot --config=node_modules/laravel-mix/setup/webpack.config.js",
        "production": "NODE_ENV=production node_modules/webpack/bin/webpack.js --progress --hide-modules --config=node_modules/laravel-mix/setup/webpack.config.js"
    },
    "keywords": [],
    "author": "noecs",
    "license": "ISC",
    "devDependencies": {
        "@babel/plugin-proposal-class-properties": "^7.5.5",
        "laravel-mix": "^4.1.2",
        "node-sass": "^4.11.0"
    },
    "eslintConfig": {
        "extends": "react-app"
    },
    "browserslist": [
        ">0.2%",
        "not dead",
        "not ie <= 11",
        "not op_mini all"
    ]
}