How to fix npm ERR! missing script: start in react

Question

When I run npm start, I see the error.

I've tried this but didn't work: https://techoverflow.net/2019/04/01/how-to-fix-npm-err-missing-script-start/

{ "private": true, "scripts": { "dev": "npm run development", "development": "cross-env NODE_ENV=development node_modules/webpack/bin/webpack.js --progress --hide-modules --config=node_modules/laravel-mix/setup/webpack.config.js", "watch": "cross-env NODE_ENV=development node_modules/webpack/bin/webpack.js --watch --progress --hide-modules --config=node_modules/laravel-mix/setup/webpack.config.js", "watch-poll": "npm run watch -- --watch-poll", "hot": "cross-env NODE_ENV=development node_modules/webpack-dev-server/bin/webpack-dev-server.js --inline --hot --config=node_modules/laravel-mix/setup/webpack.config.js", "prod": "npm run production", "production": "cross-env NODE_ENV=production node_modules/webpack/bin/webpack.js --no-progress --hide-modules --config=node_modules/laravel-mix/setup/webpack.config.js" }, "devDependencies": { "axios": "^0.17.1", "babel-plugin-syntax-dynamic-import": "^6.18.0", "babel-plugin-transform-class-properties": "^6.24.1", "babel-preset-react": "^6.23.0", "bootstrap-sass": "^3.3.7", "cross-env": "^5.2.0", "jquery": "^3.2", "laravel-mix": "^1.0", "lodash": "^4.17.11", "react": "^16.5.1", "react-dom": "^16.4.0" }, "dependencies": { "antd": "^3.12.4", "babel-plugin-import": "^1.8.0", "css-loader": "^2.1.0", "less": "^3.9.0", "less-loader": "^4.1.0", "moment": "^2.22.2", "moment-timezone": "^0.5.21", "react-addons-update": "^15.6.2", "react-redux": "^5.0.7", "react-responsive-modal": "^4.0.1", "react-router-dom": "^4.3.1", "redux": "^4.0.0", "redux-thunk": "^2.3.0", "style-loader": "^0.23.1" } }

As a solution, I have run npm run dev instead since I needed the output in app.js — Jumar Juaton

Artur Dwojak Artur Dwojak · Accepted Answer · 2019-09-10T05:59:57

You're missing script called 'start' in Your package.json. Look at scripts/start line and add same (but modified for your file) in yours package.json

{
"private": true,
"scripts": {
    "dev": "npm run development",
    "development": "cross-env NODE_ENV=development node_modules/webpack/bin/webpack.js --progress --hide-modules --config=node_modules/laravel-mix/setup/webpack.config.js",
    "watch": "cross-env NODE_ENV=development node_modules/webpack/bin/webpack.js --watch --progress --hide-modules --config=node_modules/laravel-mix/setup/webpack.config.js",
    "watch-poll": "npm run watch -- --watch-poll",
    "hot": "cross-env NODE_ENV=development node_modules/webpack-dev-server/bin/webpack-dev-server.js --inline --hot --config=node_modules/laravel-mix/setup/webpack.config.js",
    "prod": "npm run production",
    "production": "cross-env NODE_ENV=production node_modules/webpack/bin/webpack.js --no-progress --hide-modules --config=node_modules/laravel-mix/setup/webpack.config.js",
    "start": "node index.js"
},
"devDependencies": {
    "axios": "^0.17.1",
    "babel-plugin-syntax-dynamic-import": "^6.18.0",
    "babel-plugin-transform-class-properties": "^6.24.1",
    "babel-preset-react": "^6.23.0",
    "bootstrap-sass": "^3.3.7",
    "cross-env": "^5.2.0",
    "jquery": "^3.2",
    "laravel-mix": "^1.0",
    "lodash": "^4.17.11",
    "react": "^16.5.1",
    "react-dom": "^16.4.0"
},
"dependencies": {
    "antd": "^3.12.4",
    "babel-plugin-import": "^1.8.0",
    "css-loader": "^2.1.0",
    "less": "^3.9.0",
    "less-loader": "^4.1.0",
    "moment": "^2.22.2",
    "moment-timezone": "^0.5.21",
    "react-addons-update": "^15.6.2",
    "react-redux": "^5.0.7",
    "react-responsive-modal": "^4.0.1",
    "react-router-dom": "^4.3.1",
    "redux": "^4.0.0",
    "redux-thunk": "^2.3.0",
    "style-loader": "^0.23.1"
}

}

How to fix npm ERR! missing script: start in react

2 Answers