@manufosela/rich-markdown-to-html

<div class="topbar">
    <demo-theme-toggle></demo-theme-toggle>
    <div class="topbar-links">
      <a href="https://manufosela.dev/utils/">Utils catalog</a>
      <a href="https://manufosela.dev/">Main catalog</a>
      <a href="https://github.com/manufosela/utils/tree/main/packages/rich-markdown-to-html">Source</a>
      <span style="margin-left: auto; font-size: 0.85rem; color: #9ca3af;">Live markdown playground</span>
    </div>
    <div class="code-block">import { parse } from '@manufosela/rich-markdown-to-html';

const html = parse(markdown, { linkify: true, taskLists: true });
</div>
  </div>
  <div class="container">
    <div class="panel">
      <div class="panel-header">Markdown Input</div>
      <div class="options">
        <label><input type="checkbox" id="breaks"> Line Breaks</label>
        <label><input type="checkbox" id="linkify" checked> Auto-link URLs</label>
        <label><input type="checkbox" id="taskLists" checked> Task Lists</label>
        <label><input type="checkbox" id="tables" checked> Tables</label>
        <label><input type="checkbox" id="typographer"> Typographer</label>
        <label><input type="checkbox" id="showToc"> Show TOC</label>
      </div>
      <div class="panel-content">
        <textarea id="editor"># Welcome to Rich Markdown

This is a **live preview** markdown editor powered by `@manufosela/rich-markdown-to-html`.

## Features

### Text Formatting

You can use **bold**, *italic*, and ~~strikethrough~~ text.

### Code

Inline code: `const x = 1;`

Code blocks with syntax highlighting:

```javascript
function greet(name) {
  console.log(`Hello, ${name}!`);
}
```

### Lists

Unordered list:
- Item one
- Item two
- Item three

Ordered list:
1. First item
2. Second item
3. Third item

### Task Lists

- [x] Completed task
- [ ] Incomplete task
- [x] Another done task

### Blockquotes

> This is a blockquote.
> It can span multiple lines.

### Tables

| Feature | Status | Notes |
|:--------|:------:|------:|
| Tables | Done | Aligned! |
| Lists | Done | Task lists too |
| Code | Done | With highlighting |

### Links and Images

Visit [Google](https://google.com "Search Engine") for more info.

Auto-linked URL: https://example.com

---

## Try It!

Edit this text and see the live preview update instantly.
</textarea>
      </div>
    </div>
    <div class="panel">
      <div class="panel-header">HTML Preview</div>
      <div class="panel-content" id="preview"></div>
    </div>
  </div>

:root {
  --bg: #0c0f14;
  --bg-elevated: #141923;
  --bg-panel: #171d28;
  --border: #262f3f;
  --text: #f4f6fb;
  --text-muted: #a7b0c2;
  --text-dim: #7d879b;
  --accent: #ff8a3d;
  --accent-strong: #ff6a00;
  --accent-soft: rgba(255, 138, 61, 0.16);
  --shadow: 0 20px 50px rgba(5, 8, 14, 0.45);
  --radius-lg: 22px;
  --radius-md: 14px;
  --radius-sm: 10px;
  --max-width: 1160px;
}

* {
      box-sizing: border-box;
    }

    .topbar {
      display: grid;
      gap: 0.75rem;
      padding: 0.75rem 1rem;
      background: var(--bg-panel);
      color: var(--text);
      align-items: center;
    }

    .topbar-links {
      display: flex;
      gap: 0.5rem;
      flex-wrap: wrap;
      align-items: center;
    }

    .topbar a {
      font-size: 0.8rem;
      color: var(--text-muted);
      text-decoration: none;
      border: 1px solid var(--border);
      padding: 0.35rem 0.75rem;
      border-radius: 999px;
    }

    .container {
      display: grid;
      grid-template-columns: 1fr 1fr;
      height: calc(100vh - 110px);
    }

    .code-block {
      background: #0b0f1a;
      border: 1px solid #2b3247;
      border-radius: 8px;
      padding: 10px 12px;
      color: #d6d9e6;
      font-family: "JetBrains Mono", "Courier New", monospace;
      font-size: 0.8rem;
      white-space: pre-wrap;
      word-break: break-word;
    }

    .panel {
      display: flex;
      flex-direction: column;
      height: 100%;
    }

    .panel-header {
      padding: 1rem;
      background: var(--accent);
      color: #111;
      font-weight: 600;
    }

    .panel-content {
      flex: 1;
      overflow: auto;
    }

    #editor {
      width: 100%;
      height: 100%;
      padding: 1rem;
      border: none;
      resize: none;
      font-family: 'Monaco', 'Menlo', monospace;
      font-size: 14px;
      line-height: 1.5;
    }

    #preview {
      padding: 1rem 2rem;
      background: var(--bg-elevated);
    }

    /* Preview Styles */
    #preview h1, #preview h2, #preview h3,
    #preview h4, #preview h5, #preview h6 {
      margin-top: 1.5em;
      margin-bottom: 0.5em;
      color: var(--text);
    }

    #preview h1 { font-size: 2rem; border-bottom: 2px solid var(--border); padding-bottom: 0.3em; }
    #preview h2 { font-size: 1.5rem; border-bottom: 1px solid var(--border); padding-bottom: 0.3em; }
    #preview h3 { font-size: 1.25rem; }

    #preview p {
      line-height: 1.6;
      color: var(--text-muted);
    }

    #preview a {
      color: var(--accent);
      text-decoration: none;
    }

    #preview a:hover {
      text-decoration: underline;
    }

    #preview code {
      background: var(--code-bg);
      color: var(--code-text);
      padding: 0.2em 0.4em;
      border-radius: 3px;
      font-family: 'Monaco', 'Menlo', monospace;
      font-size: 0.9em;
    }

    #preview pre {
      background: var(--code-bg);
      color: var(--code-text);
      padding: 1rem;
      border-radius: 6px;
      overflow-x: auto;
    }

    #preview pre code {
      background: transparent;
      padding: 0;
      color: inherit;
    }

    #preview blockquote {
      border-left: 4px solid var(--accent);
      margin: 1em 0;
      padding: 0.5em 1em;
      background: var(--bg-panel);
      color: var(--text-muted);
    }

    #preview ul, #preview ol {
      padding-left: 2em;
      line-height: 1.8;
    }

    #preview .task-list {
      list-style: none;
      padding-left: 0;
    }

    #preview .task-list-item {
      display: flex;
      align-items: center;
      gap: 0.5em;
    }

    #preview .task-list-item input {
      margin: 0;
    }

    #preview table {
      border-collapse: collapse;
      width: 100%;
      margin: 1em 0;
    }

    #preview th, #preview td {
      border: 1px solid var(--border);
      padding: 0.75em;
    }

    #preview th {
      background: var(--bg-panel);
      font-weight: 600;
    }

    #preview tr:nth-child(even) {
      background: var(--bg-2);
    }

    #preview hr {
      border: none;
      border-top: 2px solid var(--border);
      margin: 2em 0;
    }

    #preview img {
      max-width: 100%;
      height: auto;
    }

    .options {
      padding: 0.5rem 1rem;
      background: var(--bg-panel);
      display: flex;
      gap: 1rem;
      flex-wrap: wrap;
      font-size: 0.875rem;
    }

    .options label {
      display: flex;
      align-items: center;
      gap: 0.25rem;
      cursor: pointer;
      color: var(--text);
    }

    .options input {
      accent-color: var(--accent);
    }

    .toc {
      background: var(--bg-panel);
      padding: 1rem;
      border-radius: 4px;
      margin-bottom: 1rem;
    }

    .toc ul {
      list-style: none;
      padding-left: 1em;
      margin: 0;
    }

    .toc > ul {
      padding-left: 0;
    }

    .toc a {
      color: var(--text-muted);
    }

    .toc-title {
      font-weight: 600;
      margin-bottom: 0.5rem;
      color: var(--text);
    }
  






:root {
  --bg: #0f1117;
  --bg-2: #151a26;
  --bg-spot-1: #1a2136;
  --bg-spot-2: #1d1b34;
  --card: #1c2233;
  --text: #f3f6ff;
  --muted: #b8c0d9;
  --line: #2b3247;
  --accent: #ffb000;
  --accent-2: #00d0ff;
  --surface: #0b0f1a;
  --code-bg: #0b0f1a;
  --code-text: #d6d9e6;
}

:root.light {
  --bg: #f5f5f7;
  --bg-2: #ffffff;
  --bg-spot-1: #f8e9d0;
  --bg-spot-2: #e8eef8;
  --card: #ffffff;
  --text: #1d1d1f;
  --muted: #6b7280;
  --line: #e5e7eb;
  --accent: #ffb000;
  --accent-2: #00a7d6;
  --surface: #f3f4f6;
  --code-bg: #111827;
  --code-text: #f9fafb;
}

:root.dark {
  --bg: #0f1117;
  --bg-2: #151a26;
  --bg-spot-1: #1a2136;
  --bg-spot-2: #1d1b34;
  --card: #1c2233;
  --text: #f3f6ff;
  --muted: #b8c0d9;
  --line: #2b3247;
  --accent: #ffb000;
  --accent-2: #00d0ff;
  --surface: #0b0f1a;
  --code-bg: #0b0f1a;
  --code-text: #d6d9e6;
}

h1 {
  color: var(--accent) !important;
}

.top-links a,
.topbar a {
  color: var(--muted) !important;
  border-color: var(--line) !important;
}

.top-links a:hover,
.topbar a:hover {
  color: var(--text) !important;
}

.card,
.section,
.demo-section,
.panel {
  background: var(--card) !important;
  border-color: var(--line) !important;
  color: var(--text) !important;
}

.code-block,
pre,
code,
.output,
.current-url,
.event-log,
.result-card,
.log {
  background: var(--code-bg) !important;
  color: var(--code-text) !important;
  border-color: var(--line) !important;
}

input,
select,
textarea {
  background: var(--surface) !important;
  color: var(--text) !important;
  border-color: var(--line) !important;
}

button {
  background: linear-gradient(120deg, var(--accent), #ff6a00) !important;
  color: #111 !important;
}

footer {
  color: var(--muted) !important;
}

footer a {
  color: var(--text) !important;
}

import { parse, generateTOC, renderTOC } from "https://esm.sh/@manufosela/rich-markdown-to-html";

    const editor = document.getElementById('editor');
    const preview = document.getElementById('preview');
    const optionBreaks = document.getElementById('breaks');
    const optionLinkify = document.getElementById('linkify');
    const optionTaskLists = document.getElementById('taskLists');
    const optionTables = document.getElementById('tables');
    const optionTypographer = document.getElementById('typographer');
    const optionShowToc = document.getElementById('showToc');

    function updatePreview() {
      const options = {
        breaks: optionBreaks.checked,
        linkify: optionLinkify.checked,
        taskLists: optionTaskLists.checked,
        tables: optionTables.checked,
        typographer: optionTypographer.checked
      };

      const markdown = editor.value;
      let html = '';

      if (optionShowToc.checked) {
        const toc = generateTOC(markdown, { maxLevel: 3 });
        if (toc.length > 0) {
          html += '<div class="toc"><div class="toc-title">Table of Contents</div>';
          html += renderTOC(toc);
          html += '</div>';
        }
      }

      html += parse(markdown, options);
      preview.innerHTML = html;
    }

    // Initial render
    updatePreview();

    // Update on input
    editor.addEventListener('input', updatePreview);

    // Update on option change
    [optionBreaks, optionLinkify, optionTaskLists, optionTables, optionTypographer, optionShowToc]
      .forEach(el => el.addEventListener('change', updatePreview));
  

class DemoThemeToggle extends HTMLElement {
  constructor() {
    super();
    this.attachShadow({ mode: 'open' });
    this.handleClick = this.handleClick.bind(this);
  }

  connectedCallback() {
    const saved = localStorage.getItem('utils-demo-theme');
    document.documentElement.classList.remove('dark');
    document.documentElement.classList.toggle('light', saved === 'light');

    this.render();
  }

  render() {
    const isLight = document.documentElement.classList.contains('light');
    this.shadowRoot.innerHTML = `
      <style>
        :host {
          display: inline-flex;
        }
        .toggle {
          display: inline-flex;
          align-items: center;
          border: 1px solid var(--line);
          border-radius: 999px;
          overflow: hidden;
          background: var(--surface);
        }
        button {
          border: none;
          background: transparent;
          color: var(--muted);
          padding: 6px 12px;
          font-size: 0.8rem;
          cursor: pointer;
          font-family: "Space Grotesk", "Trebuchet MS", Arial, sans-serif;
        }
        button.active {
          background: linear-gradient(120deg, var(--accent), #ff6a00);
          color: #111;
          font-weight: 600;
        }
      </style>
      <div class="toggle" role="group" aria-label="Theme toggle">
        <button class="${isLight ? 'active' : ''}" data-theme="light">Light</button>
        <button class="${isLight ? '' : 'active'}" data-theme="dark">Dark</button>
      </div>
    `;

    this.shadowRoot.querySelectorAll('button').forEach((btn) => {
      btn.addEventListener('click', this.handleClick);
    });
  }

  handleClick(event) {
    const theme = event.currentTarget.dataset.theme;
    const isLight = theme === 'light';
    document.documentElement.classList.toggle('light', isLight);
    document.documentElement.classList.remove('dark');
    localStorage.setItem('utils-demo-theme', isLight ? 'light' : 'dark');
    this.render();
  }
}

customElements.define('demo-theme-toggle', DemoThemeToggle);