windows-powershell

⚡️ Lightweight, functional, promise-based powershell wrapper

Installation

npm install windows-powershell

Features

• Promise API
• Composable API via #pipe()
• Converts powershell like objects to json
• Converts pascal case keys to camel case (LastErrorCode -> lastErrorCode)

Example

In this example we get the name of regedit.exe. As you can see we don't need to parse the output since it has already been converted to json.

import { shell, pipe, toJson } from 'windows-powershell'
 
function process (io) {
  const { json, stdout, stderr } = io
  // json -> { name: 'regedit.exe' }
  // stdout -> raw output from the cli
}
 
const cmd = pipe('get-itemproperty c:\\windows\\regedit.exe', 'select name')
shell(toJson(cmd)).then(process)

Creating objects

native powershell

$a = new-object PSObject; $a | add-member name test; $a | add-member version 0.0.1; $a

windows-powershell

shell(create({ name: 'test', version: '0.0.1' })).then(logStdout)

output

name    version        
----    -------                       
test    0.0.1     

Composing

Composing commands allows as to create intermediate values.

native powershell

$a = 1; $a = 2; echo $a + $b;

windows-powershell

shell(compose('$a = 1', '$a = 2', 'echo $a + $b')).then(logStdout)

output

3

Piping

native powershell

get-wmiobject Win32_LogicalDisk | select name

windows-powershell

const cmd = pipe(
  'get-wmiobject Win32_LogicalDisk',
  'select name'
)
 
shell(cmd).then(logStdout)

output

name
----
C:
D:
H:

Tests

npm test

License

MIT