How to add Powershell commands to an NPM script?

Question

This works on the Powershell command line:

C:\rootProject\> copy ZZZ.js -destination ZZZXXX.js

But this doesn't work:

package.json

"scripts": {
  "copy-script": "copy ZZZ.js -destination ZZZXXX.js"
}

Run script:

C:\rootProject\> npm run copy-script

ERROR

The syntax of the command is incorrect.
npm ERR! code ELIFECYCLE
npm ERR! errno 1
npm ERR! [email protected] test-copy: `copy ZZZ.js -destination ZZZXXX.js`
npm ERR! Exit status 1
npm ERR!
npm ERR! Failed at the [email protected] test-copy script.
npm ERR! This is probably not a problem with npm. There is likely additional logging output above.

npm ERR! A complete log of this run can be found in:
npm ERR!     C:\Users\USER\AppData\Roaming\npm-cache\_logs\2019-11-29T09_29_59_261Z-debug.log

cbdeveloper · Accepted Answer · 2019-11-29 09:40:02Z

6

It needs the powershell term before the command inside the script.

package.json

"scripts": {
  "copy-script": "powershell copy ZZZ.js -destination ZZZXXX.js"
}

Now it works:

C:\rootProject\> npm run copy-script

answered Nov 29, 2019 at 9:40

cbdeveloper

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1 Comment

RobC Over a year ago

If you're often creating npm scripts whereby; cross-platform support is not a requirement, and you regularly utilize Powershell specific commands, then consider changing the default cmd.exe shell that npm uses on Windows to pws by setting the script-shell config. Examples of how to do that can be found in this answer. You'll probably negate the need to add the powershell term before a command.

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