npm start 错误：npm start require(...) 不是函数 npm ERR！ 代码生命周期

Question

Just start to learn react js and finished some pages, but there is an error when I run "npm start" today. I do not change anything since last time... Anyone can help me out? Thank you.

Answer 1

谢谢大家，最后删除src文件夹下的setupProxy.js文件，npm start就可以了。

Answer 2

Please try this one.

1. Delete nodes_modules
2. npm install -g npm
3. npm install & npm install -D
4. npm run start

Answer 3

It seems like you don't have react-scripts in your global environment.try this:

npm install -g react-scripts

or

npm install --save react react-dom react-scripts

If above doesn't work try this

1. Delete npm and npm-cache directories... (don't worry you can install npm globally later)
2. Go back to your application directory and remove node_modules folder
3. Now enter npm install to install the dependencies (delete package-lock.json if it's already created)
4. Now run npm install --save react react-dom react-scripts
5. Get it started with npm start