git.stevedylan.dev

packages/cli/src/lib/markdown.ts 10.8 K raw

import * as fs from "node:fs/promises";
import * as path from "node:path";
import { glob } from "glob";
import yaml from "js-yaml";
import { minimatch } from "minimatch";
import * as toml from "smol-toml";
import type { BlogPost, FrontmatterMapping, PostFrontmatter } from "./types";

export function parseFrontmatter(
	content: string,
	mapping?: FrontmatterMapping,
): {
	frontmatter: PostFrontmatter;
	body: string;
	rawFrontmatter: Record<string, unknown>;
} {
	// Support multiple frontmatter delimiters:
	// --- (YAML) - Jekyll, Astro, most SSGs
	// +++ (TOML) - Hugo
	// *** - Alternative format
	const frontmatterRegex = /^(---|\+\+\+|\*\*\*)\n([\s\S]*?)\n\1\n([\s\S]*)$/;
	const match = content.match(frontmatterRegex);

	if (!match) {
		throw new Error("Could not parse frontmatter");
	}

	const delimiter = match[1];
	const frontmatterStr = match[2] ?? "";
	const body = match[3] ?? "";

	// Determine format based on delimiter:
	// +++ uses TOML (key = value)
	// --- and *** use YAML (key: value)
	const isToml = delimiter === "+++";

	// Parse frontmatter using the appropriate library
	let raw: Record<string, unknown>;
	if (isToml) {
		raw = toml.parse(frontmatterStr) as Record<string, unknown>;
	} else {
		// Use CORE_SCHEMA to keep dates as strings rather than Date objects
		raw =
			(yaml.load(frontmatterStr, { schema: yaml.CORE_SCHEMA }) as Record<
				string,
				unknown
			>) ?? {};
	}

	// Apply field mappings to normalize to standard PostFrontmatter fields
	const frontmatter: Record<string, unknown> = {};

	// Title mapping
	const titleField = mapping?.title || "title";
	frontmatter.title = raw[titleField] || raw.title;

	// Description mapping
	const descField = mapping?.description || "description";
	frontmatter.description = raw[descField] || raw.description;

	// Publish date mapping - check custom field first, then fallbacks
	const dateField = mapping?.publishDate;
	if (dateField && raw[dateField]) {
		frontmatter.publishDate = raw[dateField];
	} else if (raw.publishDate) {
		frontmatter.publishDate = raw.publishDate;
	} else {
		// Fallback to common date field names
		const dateFields = ["pubDate", "date", "createdAt", "created_at"];
		for (const field of dateFields) {
			if (raw[field]) {
				frontmatter.publishDate = raw[field];
				break;
			}
		}
	}

	// Updated date mapping - check custom field first, then fallbacks
	const updatedAtField = mapping?.updatedAt;
	if (updatedAtField && raw[updatedAtField]) {
		frontmatter.updatedAt = raw[updatedAtField];
	} else if (raw.updatedAt) {
		frontmatter.updatedAt = raw.updatedAt;
	} else {
		// Fallback to common date field names
		const updatedAtFields = ["updated_at", "modifiedAt", "modified_at"];
		for (const field of updatedAtFields) {
			if (raw[field]) {
				frontmatter.updatedAt = raw[field];
				break;
			}
		}
	}

	// Cover image mapping
	const coverField = mapping?.coverImage || "ogImage";
	frontmatter.ogImage = raw[coverField] || raw.ogImage;

	// Tags mapping
	const tagsField = mapping?.tags || "tags";
	frontmatter.tags = raw[tagsField] || raw.tags;

	// Draft mapping
	const draftField = mapping?.draft || "draft";
	const draftValue = raw[draftField] ?? raw.draft;
	if (draftValue !== undefined) {
		frontmatter.draft = draftValue === true || draftValue === "true";
	}

	// Always preserve atUri (internal field)
	frontmatter.atUri = raw.atUri;

	return {
		frontmatter: frontmatter as unknown as PostFrontmatter,
		body,
		rawFrontmatter: raw,
	};
}

export function getSlugFromFilename(filename: string): string {
	return filename
		.replace(/\.mdx?$/, "")
		.toLowerCase()
		.replace(/\s+/g, "-");
}

export interface SlugOptions {
	slugField?: string;
	removeIndexFromSlug?: boolean;
	stripDatePrefix?: boolean;
}

export function getSlugFromOptions(
	relativePath: string,
	rawFrontmatter: Record<string, unknown>,
	options: SlugOptions = {},
): string {
	const {
		slugField,
		removeIndexFromSlug = false,
		stripDatePrefix = false,
	} = options;

	let slug: string;

	// If slugField is set, try to get the value from frontmatter
	if (slugField) {
		const frontmatterValue = rawFrontmatter[slugField];
		if (frontmatterValue && typeof frontmatterValue === "string") {
			// Remove leading slash if present
			slug = frontmatterValue
				.replace(/^\//, "")
				.toLowerCase()
				.replace(/\s+/g, "-");
		} else {
			// Fallback to filepath if frontmatter field not found
			slug = relativePath
				.replace(/\.mdx?$/, "")
				.toLowerCase()
				.replace(/\s+/g, "-");
		}
	} else {
		// Default: use filepath
		slug = relativePath
			.replace(/\.mdx?$/, "")
			.toLowerCase()
			.replace(/\s+/g, "-");
	}

	// Remove /index or /_index suffix if configured
	if (removeIndexFromSlug) {
		slug = slug.replace(/\/_?index$/, "");
	}

	// Strip Jekyll-style date prefix (YYYY-MM-DD-) from filename
	if (stripDatePrefix) {
		slug = slug.replace(/(^|\/)(\d{4}-\d{2}-\d{2})-/g, "$1");
	}

	return slug;
}

export function resolvePathTemplate(template: string, post: BlogPost): string {
	const publishDate = new Date(post.frontmatter.publishDate);
	const year = String(publishDate.getFullYear());
	const yearUTC = String(publishDate.getUTCFullYear());
	const month = String(publishDate.getMonth() + 1).padStart(2, "0");
	const monthUTC = String(publishDate.getUTCMonth() + 1).padStart(2, "0");
	const day = String(publishDate.getDate()).padStart(2, "0");
	const dayUTC = String(publishDate.getUTCDate()).padStart(2, "0");

	const slugifiedTitle = (post.frontmatter.title || "")
		.toLowerCase()
		.replace(/\s+/g, "-")
		.replace(/[^\w-]/g, "");

	// Replace known tokens
	let result = template
		.replace(/\{slug\}/g, post.slug)
		.replace(/\{year\}/g, year)
		.replace(/\{yearUTC\}/g, yearUTC)
		.replace(/\{month\}/g, month)
		.replace(/\{monthUTC\}/g, monthUTC)
		.replace(/\{day\}/g, day)
		.replace(/\{dayUTC\}/g, dayUTC)
		.replace(/\{title\}/g, slugifiedTitle);

	// Replace any remaining {field} tokens with raw frontmatter values
	result = result.replace(/\{(\w+)\}/g, (_match, field: string) => {
		const value = post.rawFrontmatter[field];
		if (value != null && typeof value === "string") {
			return value;
		}
		return "";
	});

	// Ensure leading slash
	if (!result.startsWith("/")) {
		result = `/${result}`;
	}

	return result;
}

export function resolvePostPath(
	post: BlogPost,
	pathPrefix?: string,
	pathTemplate?: string,
): string {
	if (pathTemplate) {
		return resolvePathTemplate(pathTemplate, post);
	}
	const prefix = pathPrefix || "/posts";
	return `${prefix}/${post.slug}`;
}

export async function getContentHash(content: string): Promise<string> {
	const encoder = new TextEncoder();
	const data = encoder.encode(content);
	const hashBuffer = await crypto.subtle.digest("SHA-256", data);
	const hashArray = Array.from(new Uint8Array(hashBuffer));
	return hashArray.map((b) => b.toString(16).padStart(2, "0")).join("");
}

function shouldIgnore(relativePath: string, ignorePatterns: string[]): boolean {
	for (const pattern of ignorePatterns) {
		if (minimatch(relativePath, pattern)) {
			return true;
		}
	}
	return false;
}

export interface ScanOptions {
	frontmatterMapping?: FrontmatterMapping;
	ignorePatterns?: string[];
	slugField?: string;
	removeIndexFromSlug?: boolean;
	stripDatePrefix?: boolean;
}

export async function scanContentDirectory(
	contentDir: string,
	frontmatterMappingOrOptions?: FrontmatterMapping | ScanOptions,
	ignorePatterns: string[] = [],
): Promise<BlogPost[]> {
	// Handle both old signature (frontmatterMapping, ignorePatterns) and new signature (options)
	let options: ScanOptions;
	if (
		frontmatterMappingOrOptions &&
		("frontmatterMapping" in frontmatterMappingOrOptions ||
			"ignorePatterns" in frontmatterMappingOrOptions ||
			"slugField" in frontmatterMappingOrOptions)
	) {
		options = frontmatterMappingOrOptions as ScanOptions;
	} else {
		// Old signature: (contentDir, frontmatterMapping?, ignorePatterns?)
		options = {
			frontmatterMapping: frontmatterMappingOrOptions as
				| FrontmatterMapping
				| undefined,
			ignorePatterns,
		};
	}

	const {
		frontmatterMapping,
		ignorePatterns: ignore = [],
		slugField,
		removeIndexFromSlug,
		stripDatePrefix,
	} = options;

	const patterns = ["**/*.md", "**/*.mdx"];
	const posts: BlogPost[] = [];

	for (const pattern of patterns) {
		const files = await glob(pattern, {
			cwd: contentDir,
			absolute: false,
		});

		for (const relativePath of files) {
			// Skip files matching ignore patterns
			if (shouldIgnore(relativePath, ignore)) {
				continue;
			}

			const filePath = path.join(contentDir, relativePath);
			const rawContent = await fs.readFile(filePath, "utf-8");

			try {
				const { frontmatter, body, rawFrontmatter } = parseFrontmatter(
					rawContent,
					frontmatterMapping,
				);
				const slug = getSlugFromOptions(relativePath, rawFrontmatter, {
					slugField,
					removeIndexFromSlug,
					stripDatePrefix,
				});

				posts.push({
					filePath,
					slug,
					frontmatter,
					content: body,
					rawContent,
					rawFrontmatter,
				});
			} catch (error) {
				console.error(`Error parsing ${relativePath}:`, error);
			}
		}
	}

	// Sort by publish date (newest first)
	posts.sort((a, b) => {
		const dateA = new Date(a.frontmatter.publishDate);
		const dateB = new Date(b.frontmatter.publishDate);
		return dateB.getTime() - dateA.getTime();
	});

	return posts;
}

export function updateFrontmatterWithAtUri(
	rawContent: string,
	atUri: string,
): string {
	// Detect which delimiter is used (---, +++, or ***)
	const delimiterMatch = rawContent.match(/^(---|\+\+\+|\*\*\*)/);
	const delimiter = delimiterMatch?.[1] ?? "---";
	const isToml = delimiter === "+++";

	// Format the atUri entry based on frontmatter type
	const atUriEntry = isToml ? `atUri = "${atUri}"` : `atUri: "${atUri}"`;

	// Check if atUri already exists in frontmatter (handle both formats)
	if (rawContent.includes("atUri:") || rawContent.includes("atUri =")) {
		// Replace existing atUri (match both YAML and TOML formats)
		return rawContent.replace(
			/atUri\s*[=:]\s*["']?[^"'\n]+["']?\n?/,
			`${atUriEntry}\n`,
		);
	}

	// Insert atUri before the closing delimiter
	const frontmatterEndIndex = rawContent.indexOf(delimiter, 4);
	if (frontmatterEndIndex === -1) {
		throw new Error("Could not find frontmatter end");
	}

	const beforeEnd = rawContent.slice(0, frontmatterEndIndex);
	const afterEnd = rawContent.slice(frontmatterEndIndex);

	return `${beforeEnd}${atUriEntry}\n${afterEnd}`;
}

export function stripMarkdownForText(markdown: string): string {
	return markdown
		.replace(/#{1,6}\s/g, "") // Remove headers
		.replace(/\*\*([^*]+)\*\*/g, "$1") // Remove bold
		.replace(/\*([^*]+)\*/g, "$1") // Remove italic
		.replace(/\[([^\]]+)\]\([^)]+\)/g, "$1") // Remove links, keep text
		.replace(/`{3}[\s\S]*?`{3}/g, "") // Remove code blocks
		.replace(/`([^`]+)`/g, "$1") // Remove inline code formatting
		.replace(/!\[.*?\]\(.*?\)/g, "") // Remove images
		.replace(/\n{3,}/g, "\n\n") // Normalize multiple newlines
		.trim();
}

1	import * as fs from "node:fs/promises";
2	import * as path from "node:path";
3	import { glob } from "glob";
4	import yaml from "js-yaml";
5	import { minimatch } from "minimatch";
6	import * as toml from "smol-toml";
7	import type { BlogPost, FrontmatterMapping, PostFrontmatter } from "./types";
8
9	export function parseFrontmatter(
10	content: string,
11	mapping?: FrontmatterMapping,
12	): {
13	frontmatter: PostFrontmatter;
14	body: string;
15	rawFrontmatter: Record<string, unknown>;
16	} {
17	// Support multiple frontmatter delimiters:
18	// --- (YAML) - Jekyll, Astro, most SSGs
19	// +++ (TOML) - Hugo
20	// *** - Alternative format
21	const frontmatterRegex = /^(---\|\+\+\+\|\\\)\n([\s\S]?)\n\1\n([\s\S]*)$/;
22	const match = content.match(frontmatterRegex);
23
24	if (!match) {
25	throw new Error("Could not parse frontmatter");
26	}
27
28	const delimiter = match[1];
29	const frontmatterStr = match[2] ?? "";
30	const body = match[3] ?? "";
31
32	// Determine format based on delimiter:
33	// +++ uses TOML (key = value)
34	// --- and *** use YAML (key: value)
35	const isToml = delimiter === "+++";
36
37	// Parse frontmatter using the appropriate library
38	let raw: Record<string, unknown>;
39	if (isToml) {
40	raw = toml.parse(frontmatterStr) as Record<string, unknown>;
41	} else {
42	// Use CORE_SCHEMA to keep dates as strings rather than Date objects
43	raw =
44	(yaml.load(frontmatterStr, { schema: yaml.CORE_SCHEMA }) as Record<
45	string,
46	unknown
47	>) ?? {};
48	}
49
50	// Apply field mappings to normalize to standard PostFrontmatter fields
51	const frontmatter: Record<string, unknown> = {};
52
53	// Title mapping
54	const titleField = mapping?.title \|\| "title";
55	frontmatter.title = raw[titleField] \|\| raw.title;
56
57	// Description mapping
58	const descField = mapping?.description \|\| "description";
59	frontmatter.description = raw[descField] \|\| raw.description;
60
61	// Publish date mapping - check custom field first, then fallbacks
62	const dateField = mapping?.publishDate;
63	if (dateField && raw[dateField]) {
64	frontmatter.publishDate = raw[dateField];
65	} else if (raw.publishDate) {
66	frontmatter.publishDate = raw.publishDate;
67	} else {
68	// Fallback to common date field names
69	const dateFields = ["pubDate", "date", "createdAt", "created_at"];
70	for (const field of dateFields) {
71	if (raw[field]) {
72	frontmatter.publishDate = raw[field];
73	break;
74	}
75	}
76	}
77
78	// Updated date mapping - check custom field first, then fallbacks
79	const updatedAtField = mapping?.updatedAt;
80	if (updatedAtField && raw[updatedAtField]) {
81	frontmatter.updatedAt = raw[updatedAtField];
82	} else if (raw.updatedAt) {
83	frontmatter.updatedAt = raw.updatedAt;
84	} else {
85	// Fallback to common date field names
86	const updatedAtFields = ["updated_at", "modifiedAt", "modified_at"];
87	for (const field of updatedAtFields) {
88	if (raw[field]) {
89	frontmatter.updatedAt = raw[field];
90	break;
91	}
92	}
93	}
94
95	// Cover image mapping
96	const coverField = mapping?.coverImage \|\| "ogImage";
97	frontmatter.ogImage = raw[coverField] \|\| raw.ogImage;
98
99	// Tags mapping
100	const tagsField = mapping?.tags \|\| "tags";
101	frontmatter.tags = raw[tagsField] \|\| raw.tags;
102
103	// Draft mapping
104	const draftField = mapping?.draft \|\| "draft";
105	const draftValue = raw[draftField] ?? raw.draft;
106	if (draftValue !== undefined) {
107	frontmatter.draft = draftValue === true \|\| draftValue === "true";
108	}
109
110	// Always preserve atUri (internal field)
111	frontmatter.atUri = raw.atUri;
112
113	return {
114	frontmatter: frontmatter as unknown as PostFrontmatter,
115	body,
116	rawFrontmatter: raw,
117	};
118	}
119
120	export function getSlugFromFilename(filename: string): string {
121	return filename
122	.replace(/\.mdx?$/, "")
123	.toLowerCase()
124	.replace(/\s+/g, "-");
125	}
126
127	export interface SlugOptions {
128	slugField?: string;
129	removeIndexFromSlug?: boolean;
130	stripDatePrefix?: boolean;
131	}
132
133	export function getSlugFromOptions(
134	relativePath: string,
135	rawFrontmatter: Record<string, unknown>,
136	options: SlugOptions = {},
137	): string {
138	const {
139	slugField,
140	removeIndexFromSlug = false,
141	stripDatePrefix = false,
142	} = options;
143
144	let slug: string;
145
146	// If slugField is set, try to get the value from frontmatter
147	if (slugField) {
148	const frontmatterValue = rawFrontmatter[slugField];
149	if (frontmatterValue && typeof frontmatterValue === "string") {
150	// Remove leading slash if present
151	slug = frontmatterValue
152	.replace(/^\//, "")
153	.toLowerCase()
154	.replace(/\s+/g, "-");
155	} else {
156	// Fallback to filepath if frontmatter field not found
157	slug = relativePath
158	.replace(/\.mdx?$/, "")
159	.toLowerCase()
160	.replace(/\s+/g, "-");
161	}
162	} else {
163	// Default: use filepath
164	slug = relativePath
165	.replace(/\.mdx?$/, "")
166	.toLowerCase()
167	.replace(/\s+/g, "-");
168	}
169
170	// Remove /index or /_index suffix if configured
171	if (removeIndexFromSlug) {
172	slug = slug.replace(/\/_?index$/, "");
173	}
174
175	// Strip Jekyll-style date prefix (YYYY-MM-DD-) from filename
176	if (stripDatePrefix) {
177	slug = slug.replace(/(^\|\/)(\d{4}-\d{2}-\d{2})-/g, "$1");
178	}
179
180	return slug;
181	}
182
183	export function resolvePathTemplate(template: string, post: BlogPost): string {
184	const publishDate = new Date(post.frontmatter.publishDate);
185	const year = String(publishDate.getFullYear());
186	const yearUTC = String(publishDate.getUTCFullYear());
187	const month = String(publishDate.getMonth() + 1).padStart(2, "0");
188	const monthUTC = String(publishDate.getUTCMonth() + 1).padStart(2, "0");
189	const day = String(publishDate.getDate()).padStart(2, "0");
190	const dayUTC = String(publishDate.getUTCDate()).padStart(2, "0");
191
192	const slugifiedTitle = (post.frontmatter.title \|\| "")
193	.toLowerCase()
194	.replace(/\s+/g, "-")
195	.replace(/[^\w-]/g, "");
196
197	// Replace known tokens
198	let result = template
199	.replace(/\{slug\}/g, post.slug)
200	.replace(/\{year\}/g, year)
201	.replace(/\{yearUTC\}/g, yearUTC)
202	.replace(/\{month\}/g, month)
203	.replace(/\{monthUTC\}/g, monthUTC)
204	.replace(/\{day\}/g, day)
205	.replace(/\{dayUTC\}/g, dayUTC)
206	.replace(/\{title\}/g, slugifiedTitle);
207
208	// Replace any remaining {field} tokens with raw frontmatter values
209	result = result.replace(/\{(\w+)\}/g, (_match, field: string) => {
210	const value = post.rawFrontmatter[field];
211	if (value != null && typeof value === "string") {
212	return value;
213	}
214	return "";
215	});
216
217	// Ensure leading slash
218	if (!result.startsWith("/")) {
219	result = `/${result}`;
220	}
221
222	return result;
223	}
224
225	export function resolvePostPath(
226	post: BlogPost,
227	pathPrefix?: string,
228	pathTemplate?: string,
229	): string {
230	if (pathTemplate) {
231	return resolvePathTemplate(pathTemplate, post);
232	}
233	const prefix = pathPrefix \|\| "/posts";
234	return `${prefix}/${post.slug}`;
235	}
236
237	export async function getContentHash(content: string): Promise<string> {
238	const encoder = new TextEncoder();
239	const data = encoder.encode(content);
240	const hashBuffer = await crypto.subtle.digest("SHA-256", data);
241	const hashArray = Array.from(new Uint8Array(hashBuffer));
242	return hashArray.map((b) => b.toString(16).padStart(2, "0")).join("");
243	}
244
245	function shouldIgnore(relativePath: string, ignorePatterns: string[]): boolean {
246	for (const pattern of ignorePatterns) {
247	if (minimatch(relativePath, pattern)) {
248	return true;
249	}
250	}
251	return false;
252	}
253
254	export interface ScanOptions {
255	frontmatterMapping?: FrontmatterMapping;
256	ignorePatterns?: string[];
257	slugField?: string;
258	removeIndexFromSlug?: boolean;
259	stripDatePrefix?: boolean;
260	}
261
262	export async function scanContentDirectory(
263	contentDir: string,
264	frontmatterMappingOrOptions?: FrontmatterMapping \| ScanOptions,
265	ignorePatterns: string[] = [],
266	): Promise<BlogPost[]> {
267	// Handle both old signature (frontmatterMapping, ignorePatterns) and new signature (options)
268	let options: ScanOptions;
269	if (
270	frontmatterMappingOrOptions &&
271	("frontmatterMapping" in frontmatterMappingOrOptions \|\|
272	"ignorePatterns" in frontmatterMappingOrOptions \|\|
273	"slugField" in frontmatterMappingOrOptions)
274	) {
275	options = frontmatterMappingOrOptions as ScanOptions;
276	} else {
277	// Old signature: (contentDir, frontmatterMapping?, ignorePatterns?)
278	options = {
279	frontmatterMapping: frontmatterMappingOrOptions as
280	\| FrontmatterMapping
281	\| undefined,
282	ignorePatterns,
283	};
284	}
285
286	const {
287	frontmatterMapping,
288	ignorePatterns: ignore = [],
289	slugField,
290	removeIndexFromSlug,
291	stripDatePrefix,
292	} = options;
293
294	const patterns = ["*/.md", "*/.mdx"];
295	const posts: BlogPost[] = [];
296
297	for (const pattern of patterns) {
298	const files = await glob(pattern, {
299	cwd: contentDir,
300	absolute: false,
301	});
302
303	for (const relativePath of files) {
304	// Skip files matching ignore patterns
305	if (shouldIgnore(relativePath, ignore)) {
306	continue;
307	}
308
309	const filePath = path.join(contentDir, relativePath);
310	const rawContent = await fs.readFile(filePath, "utf-8");
311
312	try {
313	const { frontmatter, body, rawFrontmatter } = parseFrontmatter(
314	rawContent,
315	frontmatterMapping,
316	);
317	const slug = getSlugFromOptions(relativePath, rawFrontmatter, {
318	slugField,
319	removeIndexFromSlug,
320	stripDatePrefix,
321	});
322
323	posts.push({
324	filePath,
325	slug,
326	frontmatter,
327	content: body,
328	rawContent,
329	rawFrontmatter,
330	});
331	} catch (error) {
332	console.error(`Error parsing ${relativePath}:`, error);
333	}
334	}
335	}
336
337	// Sort by publish date (newest first)
338	posts.sort((a, b) => {
339	const dateA = new Date(a.frontmatter.publishDate);
340	const dateB = new Date(b.frontmatter.publishDate);
341	return dateB.getTime() - dateA.getTime();
342	});
343
344	return posts;
345	}
346
347	export function updateFrontmatterWithAtUri(
348	rawContent: string,
349	atUri: string,
350	): string {
351	// Detect which delimiter is used (---, +++, or ***)
352	const delimiterMatch = rawContent.match(/^(---\|\+\+\+\|\\\*)/);
353	const delimiter = delimiterMatch?.[1] ?? "---";
354	const isToml = delimiter === "+++";
355
356	// Format the atUri entry based on frontmatter type
357	const atUriEntry = isToml ? `atUri = "${atUri}"` : `atUri: "${atUri}"`;
358
359	// Check if atUri already exists in frontmatter (handle both formats)
360	if (rawContent.includes("atUri:") \|\| rawContent.includes("atUri =")) {
361	// Replace existing atUri (match both YAML and TOML formats)
362	return rawContent.replace(
363	/atUri\s[=:]\s["']?[^"'\n]+["']?\n?/,
364	`${atUriEntry}\n`,
365	);
366	}
367
368	// Insert atUri before the closing delimiter
369	const frontmatterEndIndex = rawContent.indexOf(delimiter, 4);
370	if (frontmatterEndIndex === -1) {
371	throw new Error("Could not find frontmatter end");
372	}
373
374	const beforeEnd = rawContent.slice(0, frontmatterEndIndex);
375	const afterEnd = rawContent.slice(frontmatterEndIndex);
376
377	return `${beforeEnd}${atUriEntry}\n${afterEnd}`;
378	}
379
380	export function stripMarkdownForText(markdown: string): string {
381	return markdown
382	.replace(/#{1,6}\s/g, "") // Remove headers
383	.replace(/\\([^]+)\\*/g, "$1") // Remove bold
384	.replace(/\([^]+)\*/g, "$1") // Remove italic
385	.replace(/\[([^\]]+)\]\([^)]+\)/g, "$1") // Remove links, keep text
386	.replace(/`{3}[\s\S]*?`{3}/g, "") // Remove code blocks
387	.replace(/`([^`]+)`/g, "$1") // Remove inline code formatting
388	.replace(/!\[.?\]\(.?\)/g, "") // Remove images
389	.replace(/\n{3,}/g, "\n\n") // Normalize multiple newlines
390	.trim();
391	}