functions/Update-dbatools.ps1

#ValidationTags#Messaging,FlowControl,Pipeline,CodeStyle#
function Update-Dbatools {
    <#
        .SYNOPSIS
            Exported function. Updates dbatools. Deletes current copy and replaces it with freshest copy.
 
        .DESCRIPTION
            Exported function. Updates dbatools. Deletes current copy and replaces it with freshest copy.
 
        .PARAMETER Development
            If this switch is enabled, the current development branch will be installed. By default, the latest official release is installed.
 
        .PARAMETER EnableException
            By default, when something goes wrong we try to catch it, interpret it and give you a friendly warning message.
            This avoids overwhelming you with "sea of red" exceptions, but is inconvenient because it basically disables advanced scripting.
            Using this switch turns this "nice by default" feature off and enables you to catch exceptions with your own try/catch.
 
        .PARAMETER WhatIf
            If this switch is enabled, no actions are performed but informational messages will be displayed that explain what would happen if the command were to run.
 
        .PARAMETER Confirm
            If this switch is enabled, you will be prompted for confirmation before executing any operations that change state.
 
        .NOTES
            Tags: Module
            Website: https://dbatools.io
            Copyright: (C) Chrissy LeMaire, clemaire@gmail.com
            License: GNU GPL v3 https://opensource.org/licenses/GPL-3.0
 
        .LINK
            https://dbatools.io/Update-DbaTools
 
        .EXAMPLE
            Update-Dbatools
 
            Updates dbatools. Deletes current copy and replaces it with freshest copy.
 
        .EXAMPLE
            Update-Dbatools -dev
 
            Updates dbatools to the current development branch. Deletes current copy and replaces it with latest from github.
    #>

    [CmdletBinding(SupportsShouldProcess = $true, ConfirmImpact = "Low")]
    param(
        [parameter(Mandatory = $false)]
        [Alias("dev", "devbranch")]
        [switch]$Development,
        [Alias('Silent')]
        [switch]$EnableException
    )
    $MyModuleBase = [SqlCollaborative.Dbatools.dbaSystem.SystemHost]::ModuleBase
    $InstallScript = join-path -path $MyModuleBase -ChildPath "install.ps1";
    if ($Development) {
        Write-Message -Level Verbose -Message "Installing dev/beta channel via $Installscript.";
        if ($PSCmdlet.ShouldProcess("development branch", "Updating dbatools")) {
            & $InstallScript -beta;
        }
    }
    else {
        Write-Message -Level Verbose -Message "Installing release version via $Installscript."
        if ($PSCmdlet.ShouldProcess("release branch", "Updating dbatools")) {
            & $InstallScript;
        }
    }
}