init

node_modules/remark-frontmatter/lib/index.d.ts

@@ -0,0 +1,16 @@
+/**
+ * Add support for frontmatter.
+ *
+ * ###### Notes
+ *
+ * Doesn’t parse the data inside them: create your own plugin to do that.
+ *
+ * @param {Options | null | undefined} [options='yaml']
+ *   Configuration (default: `'yaml'`).
+ * @returns {undefined}
+ *   Nothing.
+ */
+export default function remarkFrontmatter(options?: Options | null | undefined): undefined;
+export type Root = import('mdast').Root;
+export type Options = import('micromark-extension-frontmatter').Options;
+export type Processor = import('unified').Processor<Root>;

node_modules/remark-frontmatter/lib/index.js

@@ -0,0 +1,48 @@
+/// <reference types="remark-parse" />
+/// <reference types="remark-stringify" />
+
+/**
+ * @typedef {import('mdast').Root} Root
+ * @typedef {import('micromark-extension-frontmatter').Options} Options
+ * @typedef {import('unified').Processor<Root>} Processor
+ */
+
+import {
+  frontmatterFromMarkdown,
+  frontmatterToMarkdown
+} from 'mdast-util-frontmatter'
+import {frontmatter} from 'micromark-extension-frontmatter'
+
+/** @type {Options} */
+const emptyOptions = 'yaml'
+
+/**
+ * Add support for frontmatter.
+ *
+ * ###### Notes
+ *
+ * Doesn’t parse the data inside them: create your own plugin to do that.
+ *
+ * @param {Options | null | undefined} [options='yaml']
+ *   Configuration (default: `'yaml'`).
+ * @returns {undefined}
+ *   Nothing.
+ */
+export default function remarkFrontmatter(options) {
+  // @ts-expect-error: TS is wrong about `this`.
+  // eslint-disable-next-line unicorn/no-this-assignment
+  const self = /** @type {Processor} */ (this)
+  const settings = options || emptyOptions
+  const data = self.data()
+
+  const micromarkExtensions =
+    data.micromarkExtensions || (data.micromarkExtensions = [])
+  const fromMarkdownExtensions =
+    data.fromMarkdownExtensions || (data.fromMarkdownExtensions = [])
+  const toMarkdownExtensions =
+    data.toMarkdownExtensions || (data.toMarkdownExtensions = [])
+
+  micromarkExtensions.push(frontmatter(settings))
+  fromMarkdownExtensions.push(frontmatterFromMarkdown(settings))
+  toMarkdownExtensions.push(frontmatterToMarkdown(settings))
+}