web/_includes/mermaid.html

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<!-- mermaid-js loader -->
<script type="text/javascript">
(function () {
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function updateMermaid(event) {
if (event.source === window && event.data && event.data.direction === ModeToggle.ID) {
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const mode = event.data.message;
if (typeof mermaid === 'undefined') {
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return;
}
let expectedTheme = mode === ModeToggle.DARK_MODE ? 'dark' : 'default';
let config = { theme: expectedTheme };
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/* Re-render the SVG <https://github.com/mermaid-js/mermaid/issues/311#issuecomment-332557344> */
$('.mermaid').each(function () {
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let svgCode = $(this).prev().children().html();
$(this).removeAttr('data-processed');
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$(this).html(svgCode);
});
mermaid.initialize(config);
mermaid.init(undefined, '.mermaid');
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}
}
let initTheme = 'default';
const html = document.documentElement;
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if (
(html.hasAttribute('data-mode') && html.getAttribute('data-mode') === 'dark') ||
(!html.hasAttribute('data-mode') && window.matchMedia('(prefers-color-scheme: dark)').matches)
) {
initTheme = 'dark';
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}
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let mermaidConf = {
theme: initTheme /* <default|dark|forest|neutral> */
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};
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/* Create mermaid tag */
document.querySelectorAll('pre>code.language-mermaid').forEach((elem) => {
const svgCode = elem.textContent;
const backup = elem.parentElement;
backup.classList.add('unloaded');
/* create mermaid node */
let mermaid = document.createElement('pre');
mermaid.classList.add('mermaid');
const text = document.createTextNode(svgCode);
mermaid.appendChild(text);
backup.after(mermaid);
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});
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mermaid.initialize(mermaidConf);
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window.addEventListener('message', updateMermaid);
})();
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</script>