✨ feat: nvm completion for powershell (windows)

dotposh/Config/posh-completions/nvm.ps1

@@ -0,0 +1,89 @@
+# powershell completion for nvm-for-windows
+
+if (Get-Command nvm -ErrorAction SilentlyContinue) {
+	# nvm powershell completion start
+	$script:NvmCommands = @(
+		'arch', 'current', 'debug', 'install', 'list', 'ls', 'on', 'off', 'proxy', 'node_mirror', 'npm_mirror', 'uninstall', 'use', 'root', 'v', 'version'
+	)
+
+	$script:NvmSubcommands = @{
+		arch = '32 64'
+		list = 'available'
+		ls   = 'available'
+	}
+
+	function script:NvmExpandCmdParams($cmds, $cmd, $filter) {
+		$cmds.$cmd -split ' ' | Where-Object { $_ -like "$filter*" }
+	}
+
+	function script:NvmExpandCmd($filter) {
+		$cmdList = @()
+		$cmdList += $NvmCommands
+		$cmdList -like "$filter*" | Sort-Object
+	}
+
+	function script:NvmExpandParamValues($cmd, $param, $filter) {
+		$NvmParamValues[$cmd][$param] -split ' ' |
+		Where-Object { $_ -like "$filter*" } |
+		Sort-Object
+	}
+
+	function script:NvmVersions($filter, $use) {
+		$versions = @()
+		if ($use) {
+			$versions += $NvmSubcommands["use"] -split ' '
+		}
+		$versions += Get-ChildItem -Filter '*v*' -Path "$env:NVM_HOME\nodejs" -Directory -Name | Where-Object { $_ -like "$filter*" }
+		$versions -like "$filter*"
+	}
+
+	function script:NvmAvailableVersions($filter, $install) {
+		$versions = @()
+		if ($install) {
+			$versions += $NvmSubcommands["install"] -split ' '
+		}
+		$versions += Invoke-WebRequest -UseBasicParsing -Uri https://nodejs.org/dist/index.json | ConvertFrom-Json | ForEach-Object { $_.version }
+		$versions -like "$filter*"
+	}
+
+	function script:NvmTabExpansion($lastBlock) {
+		switch -regex ($lastBlock) {
+			# nvm uninstall <version>
+			"^uninstall\s+(?:.+\s+)?(?<version>[\w][\-\.\w]*)?$" {
+				return NvmVersions $matches['version'] $false
+			}
+
+			# nvm use <version>
+			"^use\s+(?:.+\s+)?(?<version>[\w][\-\.\w]*)?$" {
+				return NvmVersions $matches['version'] $true
+			}
+
+			# nvm install <version>
+			"^install\s+(?:.+\s+)?(?<version>[\w][\-\.\w]*)?$" {
+				return NvmAvailableVersions $matches['version'] $true
+			}
+
+			# nvm <cmd> <subcommand>
+			"^(?<cmd>$($NvmSubcommands.Keys -join '|'))\s+(?<op>\S*)$" {
+				return NvmExpandCmdParams $NvmSubcommands $matches['cmd'] $matches['op']
+			}
+
+			# nvm <cmd>
+			"^(?<cmd>\S*)$" {
+				return NvmExpandCmd $matches['cmd'] $true
+			}
+		}
+	}
+
+	Register-EngineEvent -SourceIdentifier PowerShell.OnIdle -MaxTriggerCount 1 -Action {
+		Register-ArgumentCompleter -Native -CommandName @('nvm', 'nvm.exe') -ScriptBlock {
+			param($wordToComplete, $commandAst, $cursorPosition)
+			$rest = $commandAst.CommandElements[1..$commandAst.CommandElements.Count] -join ' '
+			if ($rest -ne "" -and $wordToComplete -eq "") {
+				$rest += " "
+			}
+			NvmTabExpansion $rest
+		}
+	} | Out-Null
+	# nvm powershell completion end
+}