Markdown & Mermaid Diagrams Visual for Power BI – Update 1.4.0

The latest 1.4.0 update of the Markdown & Mermaid Diagrams visual introduces exciting new features and enhancements:

✨ New Features

📌 Custom Styling with the styles Block

You can now define custom styles for text elements using the new styles block.

All content within this block is added as a <style> tag in the final HTML render.

Example:

h1 {
    color: red;
}

This will make all <h1> headings appear in red.

🛠 New Handlebars.js Helper Functions

We've added several new helper functions for the Handlebars.js templating engine, including:

• Equal (eq)
• Not Equal (ne)
• Less Than (lt)
• Less Than or Equal (lte)
• Greater Than (gt)
• Greater Than or Equal (gte)
• Logical AND (and)
• Logical OR (or)

📖 Read the full Handlebars.js helpers documentation →

🔍 Improved Debugging: View Source on Render Failure

If rendering fails, the visual now displays the source configuration of the chart. This helps you quickly identify and fix any issues.

⚡ Increased Diagram Rendering Limit

The maxEdges configuration parameter has been set to 30,000, allowing the visual to render diagrams with up to 30,000 nodes.