🎉 initiate project *astro_rewrite*

node_modules/@mdx-js/mdx/lib/plugin/remark-mark-and-unravel.js

@@ -0,0 +1,91 @@
+/**
+ * @typedef {import('mdast').Content} Content
+ * @typedef {import('mdast').Root} Root
+ *
+ * @typedef {import('remark-mdx')} DoNotTouchAsThisImportItIncludesMdxInTree
+ */
+
+import {visit} from 'unist-util-visit'
+
+/**
+ * A tiny plugin that unravels `<p><h1>x</h1></p>` but also
+ * `<p><Component /></p>` (so it has no knowledge of “HTML”).
+ *
+ * It also marks JSX as being explicitly JSX, so when a user passes a `h1`
+ * component, it is used for `# heading` but not for `<h1>heading</h1>`.
+ *
+ * @type {import('unified').Plugin<[], Root>}
+ */
+export function remarkMarkAndUnravel() {
+  return (tree) => {
+    visit(tree, (node, index, parent) => {
+      let offset = -1
+      let all = true
+      let oneOrMore = false
+
+      if (parent && typeof index === 'number' && node.type === 'paragraph') {
+        const children = node.children
+
+        while (++offset < children.length) {
+          const child = children[offset]
+
+          if (
+            child.type === 'mdxJsxTextElement' ||
+            child.type === 'mdxTextExpression'
+          ) {
+            oneOrMore = true
+          } else if (
+            child.type === 'text' &&
+            /^[\t\r\n ]+$/.test(String(child.value))
+          ) {
+            // Empty.
+          } else {
+            all = false
+            break
+          }
+        }
+
+        if (all && oneOrMore) {
+          offset = -1
+
+          /** @type {Array<Content>} */
+          const newChildren = []
+
+          while (++offset < children.length) {
+            const child = children[offset]
+
+            if (child.type === 'mdxJsxTextElement') {
+              // @ts-expect-error: content model is fine.
+              child.type = 'mdxJsxFlowElement'
+            }
+
+            if (child.type === 'mdxTextExpression') {
+              // @ts-expect-error: content model is fine.
+              child.type = 'mdxFlowExpression'
+            }
+
+            if (
+              child.type === 'text' &&
+              /^[\t\r\n ]+$/.test(String(child.value))
+            ) {
+              // Empty.
+            } else {
+              newChildren.push(child)
+            }
+          }
+
+          parent.children.splice(index, 1, ...newChildren)
+          return index
+        }
+      }
+
+      if (
+        node.type === 'mdxJsxFlowElement' ||
+        node.type === 'mdxJsxTextElement'
+      ) {
+        const data = node.data || (node.data = {})
+        data._mdxExplicitJsx = true
+      }
+    })
+  }
+}