Create PRs from https://gist.github.com/sandersn/d9ca982ff4d66be453d2c6f8f9be7fb9

not-needed-packages.ps1

#Requires -Module PSGitHub
#Requires -Module PowerGit

[CmdletBinding()]
param()

$items = Get-Content not-needed-packages.txt | Select-String -Pattern 'Typings already defined for ([^ ]+)' -Context 0,5

$i = 0
$items | ForEach-Object {
    $i++
    $pkg = $_.Matches.Groups[1]
    Write-Verbose "$i/$($items.Length): $pkg"
    try {
        $yarnCmd = $_.Context.PostContext[2].Trim()
        $prDescr = $_.Context.PostContext[4].Replace('And comment PR: ', '').Trim()
        $title = "$($pkg): Provides its own types"

        if (-not (Test-Path "types/$pkg")) {
            Write-Verbose "$pkg does not exist anymore"
            return
        }

        Write-Verbose "Package: $pkg"
        Write-Verbose $yarnCmd
        Write-Verbose $prDescr

        $pr = Find-GitHubPullRequest "repo:DefinitelyTyped/DefinitelyTyped `"$title`" in:title is:pr"
        if ($pr) {
            Write-Verbose "Pull Request already exists: $($pr.WebUrl)"
            return
        }

        Set-GitHead master -ErrorAction Stop | Out-Null

        New-GitBranch -Name "not-needed-$pkg" -ErrorAction Stop | Out-Null

        Invoke-Expression $yarnCmd
        if ($LASTEXITCODE -ne 0) {
            throw "yarn failed"
        }

        Add-GitItem -All | Out-Null
        Save-GitCommit -Message $title | Out-Null
        Send-GitBranch -SetUpstream -ErrorAction Stop | New-GitHubPullRequest `
            -Owner DefinitelyTyped `
            -ForkOwner felixfbecker `
            -Body $prDescr

        Write-Progress -Activity "Processing packages" -Status "Package $i/$($items.Count) $pkg" -PercentComplete (($i / $items.Count) * 100)
    } catch {
        Write-Error -ErrorRecord $_
    }
}