https://gist.github.com/AdarshGrewal/a51236d5be7f5e3d6981f67321051433 converted to pwsh for windows users

flash_stock.ps1

$filesToRemove = ".\platform-tools-latest-windows.zip", ".\platform-tools"
foreach ($fileToRemove in $filesToRemove) {
    If (Test-Path $fileToRemove) {
        Remove-Item -Force -Recurse $fileToRemove
    }
}

wget https://dl.google.com/android/repository/platform-tools-latest-windows.zip

Get-ChildItem platform-tools-latest-windows.zip | Expand-Archive -DestinationPath .\ -Force

# Add local directory to $env
$env:Path += ";${Get-Location}\platform-tools"
#Get-Command fastboot 

# Array definitions
$bootall_partitions = "boot", "modem"
$boot_partitions = "recovery", "dtbo", "vbmeta", "vbmeta_system", "vbmeta_vendor", "vendor_boot"
$fw_partitions = "abl", "splash", "aop_config", "aop", "bluetooth", "core_nhlos", "tz", "uefi", "uefisecapp", "cpucp", "devcfg", "dsp", "engineering_cdt", "oplus_sec", "featenabler", "oplusstanvbk", "xbl_config", "hyp", "qupfw", "xbl", "imagefv", "xbl_ramdump", "keymaster", "shrm", "rpm"
$logical_partitions = "my_bigball", "my_carrier", "my_engineering", "my_heytap", "my_manifest", "my_product", "my_region", "my_stock", "odm", "odm_dlkm", "product", "system", "system_ext", "vendor", "vendor_dlkm"
$blank_partitions = "my_company", "my_preload"

# only need to read in once
$global:localPartition = Get-ChildItem *.img | ForEach-Object { $_.Name.Substring(0, $_.name.Length - 4) }

function Test-Existense {
    param (
        [string]$partition
    )
    
    if ($partition -notin $localPartition) {
        return -1
    }
}

function Use-Flash-Image {
    param(
        [string]$partition,
        [string]$slotOption = ""
    )

    if (Test-Existense -partition $partition -eq -1) {
        return
    }
    if ($slotOption -eq "all") {
        fastboot flash --slot $slotOption $partition "$($partition).img"
    }
    else {
        fastboot flash $partition "$($partition).img"
    }
}

function Use-Prepare-Partition {
    param(
        [string]$partition
    )

    fastboot delete-logical-partition "${partition}_a"
    fastboot delete-logical-partition "${partition}_b"
    fastboot delete-logical-partition "${partition}_a-cow"
    fastboot delete-logical-partition "${partition}_b-cow"
    fastboot create-logical-partition "${partition}_a" 1
    fastboot create-logical-partition "${partition}_b" 1
}

function Use-Wipe-Data {
    $choice = Read-Host "This action will wipe all data on the device. Are you sure you want to continue? (y/n)"

    if ($choice -eq "y" -or $choice -eq "Y") {
        fastboot -w
        Write-Host "Data wipe completed."
        fastboot reboot
    }
    else {
        Write-Host "Data wipe canceled."
        fastboot reboot
    }
}

# Flash boot partitions
foreach ($partition in $bootall_partitions) {
    Use-Flash-Image $partition all
}
foreach ($partition in $boot_partitions) {
    Use-Flash-Image $partition 
}

fastboot reboot fastboot

# Flash again because now fastbootd has access
foreach ($partition in $boot_partitions) {
    Use-Flash-Image $partition all
}

# Flash firmware partitions
foreach ($partition in $fw_partitions) {
    Use-Flash-Image $partition all
}

# Prepare and flash logical partitions
foreach ($partition in $logical_partitions) {
    Use-Prepare-Partition $partition
    Use-Flash-Image $partition
}

# Prepare blank partitions
foreach ($partition in $blank_partitions) {
    Use-Prepare-Partition $partition

}

Use-Wipe-Data