A Powershell function to get all of the node dependencies defined in a JSON file that match a pattern.

Get-NodePackages.ps1

# Usage: yarn remove $(Get-NodePackages -Pattern 'gatsby')
function Get-NodePackages {
	param (
		$Pattern = '.*',
		$PackagePath = '.\package.json'
	)

	$package = ConvertFrom-Json $(gc $PackagePath | Out-String)
	$dependencies = $package.dependencies ?? @()
	$devDependencies = $package.devDependencies ?? @()
	$dependencyMembers = $(Get-Member -InputObject $dependencies) + $(Get-Member -InputObject $devDependencies)

	return $(
		$dependencyMembers | Where-Object {
			$_.MemberType -eq 'NoteProperty' -and $_.Name -match $Pattern
		}
	).Name
}