GithubPRMerges.ps1

#This script calculates how many PRs each person merged
param(
    [Parameter(Mandatory=$true)]
    [string]$PersonalAccessToken,
    [Parameter(Mandatory=$true)]
    [string]$OrgOrUser,
    [Parameter(Mandatory=$true)]
    [string]$RepoName
)
$base64Token = [Convert]::ToBase64String([char[]]$PersonalAccessToken)

$Headers = @{
    Authorization ="Basic $Base64Token"
}

$url = "https://api.github.com/repos/$OrgOrUser/$RepoName/pulls?state=closed"

$results = @()

while($true) {
    $response = Invoke-WebRequest -Headers $Headers -Uri $url -UseBasicParsing
    $results += $response.Content | ConvertFrom-Json

    $match = [regex]::Match($response.Headers['Link'], '<([^>]+)>;\s*rel="next"')
    if(-not $match.Success){
        break
    }
    $url = $match.Groups[1].Value
}

$prs = $results._links.self.href |% { Invoke-RestMethod -Headers $Headers -Uri $_ }
$prs | select -ExpandProperty merged_by | group login