misuzu/src/Parsers/MarkdownParser.php

<?php
namespace Misuzu\Parsers;

use Parsedown;

class MarkdownParser extends Parsedown implements ParserInterface {
    public function parseText(string $text): string {
        return $this->text($text);
    }

    public function parseLine(string $line): string {
        return $this->line($line);
    }

    protected function inlineImage($excerpt) {
        if(!isset($excerpt['text'][1]) || $excerpt['text'][1] !== '[')
            return;

        $excerpt['text'] = substr($excerpt['text'], 1);

        $link = $this->inlineLink($excerpt);
        if($link === null)
            return;

        $inline = [
            'extent' => $link['extent'] + 1,
            'element' => [
                'name' => 'span',
                'attributes' => [
                    'class' => 'js-msz-embed-media',
                    'data-msz-embed-url' => $link['element']['attributes']['href'],
                    'data-msz-embed-alt' => $link['element']['text'],
                ],
                'rawHtml' => sprintf(
                    '<noscript><a href="%1$s" target="_blank" class="link" rel="noopener noreferrer">%1$s</a></noscript>',
                    htmlspecialchars($link['element']['attributes']['href'])
                ),
            ],
        ];

        $inline['element']['attributes'] += $link['element']['attributes'];

        unset($inline['element']['attributes']['href']);

        return $inline;
    }
}