disgusting.php

<?php
require_once 'vendor/autoload.php';

use Psl\Regex;
use Psl\File;
use Psl\Filesystem;
use Psl\Vec;

$covertedComments = Regex\replace(File\read('phpstan-baseline.php'), '/\/\/ identifier: (.+)/', '\'identifier\' => \'$1\',');

$tempBaseline = Filesystem\create_temporary_file();
File\write($tempBaseline, $covertedComments);

$baseline = include $tempBaseline;
$errors = $baseline['parameters']['ignoreErrors'];

$chunks = Vec\chunk($errors, 100);

Vec\map_with_key($chunks, static function (int $index, array $chunk) {
    $filename = 'phpstan-baseline-chunk-' . $index . '.php';
    Filesystem\create_file($filename);

    $errors = var_export($chunk, true);

    $covertedComments = Regex\replace($errors, '/\'identifier\' => \'(.+)\',/', '// identifier: $1');

    File\write($filename, '<?php return [\'parameters\' => [\'ignoreErrors\' => ' . $covertedComments . ']];');
});

echo 1;