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src/plugins/rehype-component-admonition.mjs

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+/// <reference types="mdast" />
+import { h } from 'hastscript'
+
+/**
+ * Creates an admonition component.
+ *
+ * @param {Object} properties - The properties of the component.
+ * @param {string} [properties.title] - An optional title.
+ * @param {('tip'|'note'|'important'|'caution'|'warning')} type - The admonition type.
+ * @param {import('mdast').RootContent[]} children - The children elements of the component.
+ * @returns {import('mdast').Parent} The created admonition component.
+ */
+export function AdmonitionComponent(properties, children, type) {
+ if (!Array.isArray(children) || children.length === 0)
+  return h("div",
+    { class: 'hidden' },
+    'Invalid admonition directive. (Admonition directives must be of block type ":::note{name="name"} <content> :::")'
+  );
+
+  let label = null
+  if (properties && properties['has-directive-label']) {
+    label = children[0];            // The first child is the label
+    children = children.slice(1);
+    label.tagName = "div";          // Change the tag <p> to <div>
+  }
+
+  return h(`blockquote`,
+    { class: `admonition bdm-${type}` },
+    [ h("span", { class: `bdm-title` }, label ? label : type.toUpperCase()), ...children]
+  );
+}