use xcopy in package.json

I have a react application and a express server. I am serving react app through express server as a static page. I want to copy the build folder from the react application to server each time I build the react project. I am using xcopy, but its not working.

"scripts": {
    "start": "react-scripts start",
    "build": "react-scripts build && xcopy C:\Users\gevi\Scheduler\client\build C:\Users\gevi\Scheduler\Server\build /E/H/C/I",
    "test": "react-scripts test",
    "eject": "react-scripts eject"
  },

Solution

Your example is not valid JSON, therefore consider making the following changes:

Escape the backslashes, i.e. change all \ to \\
Encase the pathnames in JSON escaped double quotes (i.e. \"...\").

Essentially, redefine your build script as follows:

"scripts": {
  ...
  "build": "react-scripts build && xcopy \"C:\\Users\\gevi\\Scheduler\\client\\build\" \"C:\\Users\\gevi\\Scheduler\\Server\\build\" /E/H/C/I",
  ...
}

For clarity purposes the following example uses a circumflex (^) character to indicate each additional change made to the build script (as per above) that you provided in your question:

"build": "react-scripts build && xcopy \"C:\\Users\\gevi\\Scheduler\\client\\build\" \"C:\\Users\\gevi\\Scheduler\\Server\\build\" /E/H/C/I",
                                       ^^  ^      ^     ^          ^       ^      ^^ ^^  ^      ^     ^          ^       ^      ^^

Please refer to my answer here if you need to change the xcopy options. E.g.

You may want to add the /Q option to not display file names in the console while copying.
Or, maybe add an escaped backlash at the end of the destination path to ensure that the build folder is created if it doesn't already exist on the server. If that's a requirement then change the destination path in the previous example to:
```
\"C:\\Users\\gevi\\Scheduler\\Server\\build\\\"
                                           ^^
```