refactor: replace duplicate parseSlug

packages/astro/src/content/types-generator.ts

@@ -12,16 +12,15 @@ import { CONTENT_TYPES_FILE, VIRTUAL_MODULE_ID } from './consts.js';
 import {
 	getContentPaths,
 	getEntryInfo,
-	getEntrySlug,
 	getEntryType,
 	loadContentConfig,
 	NoCollectionError,
-	parseFrontmatter,
 	type ContentConfig,
 	type ContentObservable,
 	type ContentPaths,
 	type EntryInfo,
 	getContentEntryConfigByExtMap,
+	getEntrySlug,
 } from './utils.js';
 
 type ChokidarEvent = 'add' | 'addDir' | 'change' | 'unlink' | 'unlinkDir';
@@ -187,14 +186,23 @@ export async function createContentTypesGenerator({
 			return { shouldGenerateTypes: false };
 		}
 
-		const { id, collection } = entryInfo;
+		const { id, collection, slug: generatedSlug } = entryInfo;
+		const contentEntryType = contentEntryConfigByExt.get(path.extname(event.entry.pathname));
+		if (!contentEntryType) return { shouldGenerateTypes: false };
 
 		const collectionKey = JSON.stringify(collection);
 		const entryKey = JSON.stringify(id);
 
 		switch (event.name) {
 			case 'add':
-				const addedSlug = await parseSlug({ fs, event, entryInfo });
+				const addedSlug = await getEntrySlug({
+					generatedSlug,
+					id,
+					collection,
+					fileUrl: event.entry,
+					contentEntryType,
+					fs,
+				});
 				if (!(collectionKey in contentTypes)) {
 					addCollection(contentTypes, collectionKey);
 				}
@@ -210,7 +218,14 @@ export async function createContentTypesGenerator({
 			case 'change':
 				// User may modify `slug` in their frontmatter.
 				// Only regen types if this change is detected.
-				const changedSlug = await parseSlug({ fs, event, entryInfo });
+				const changedSlug = await getEntrySlug({
+					generatedSlug,
+					id,
+					collection,
+					fileUrl: event.entry,
+					contentEntryType,
+					fs,
+				});
 				if (contentTypes[collectionKey]?.[entryKey]?.slug !== changedSlug) {
 					setEntry(contentTypes, collectionKey, entryKey, changedSlug);
 					return { shouldGenerateTypes: true };
@@ -309,25 +324,6 @@ function removeCollection(contentMap: ContentTypes, collectionKey: string) {
 	delete contentMap[collectionKey];
 }
 
-async function parseSlug({
-	fs,
-	event,
-	entryInfo: { id, collection, slug: generatedSlug },
-}: {
-	fs: typeof fsMod;
-	event: ContentEvent;
-	entryInfo: EntryInfo;
-}) {
-	// `slug` may be present in entry frontmatter.
-	// This should be respected by the generated `slug` type!
-	// Parse frontmatter and retrieve `slug` value for this.
-	// Note: will raise any YAML exceptions and `slug` parse errors (i.e. `slug` is a boolean)
-	// on dev server startup or production build init.
-	const rawContents = await fs.promises.readFile(event.entry, 'utf-8');
-	const { data: frontmatter } = parseFrontmatter(rawContents, fileURLToPath(event.entry));
-	return getEntrySlug({ id, collection, generatedSlug, frontmatterSlug: frontmatter.slug });
-}
-
 function setEntry(
 	contentTypes: ContentTypes,
 	collectionKey: string,

packages/astro/src/content/utils.ts

@@ -52,7 +52,7 @@ export const msg = {
 		`${collection} does not have a config. We suggest adding one for type safety!`,
 };
 
-export function getEntrySlug({
+export function parseEntrySlug({
 	id,
 	collection,
 	generatedSlug,
@@ -422,16 +422,19 @@ export async function getStringifiedLookupMap({
 		contentGlob.map(async (filePath) => {
 			const info = getEntryInfo({ contentDir, entry: filePath });
 			if (info instanceof NoCollectionError) return;
-			const contentEntryConfig = contentEntryConfigByExt.get(extname(filePath));
-			if (!contentEntryConfig) return;
+			const contentEntryType = contentEntryConfigByExt.get(extname(filePath));
+			if (!contentEntryType) return;
 
 			const { id, collection, slug: generatedSlug } = info;
 			filePathByLookupId[collection] ??= {};
-			const { slug: frontmatterSlug } = await contentEntryConfig.getEntryInfo({
+			const slug = await getEntrySlug({
+				id,
+				collection,
+				generatedSlug,
+				fs,
 				fileUrl: pathToFileURL(filePath),
-				contents: await fs.promises.readFile(filePath, 'utf-8'),
+				contentEntryType,
 			});
-			const slug = getEntrySlug({ id, collection, generatedSlug, frontmatterSlug });
 			filePathByLookupId[collection][slug] = rootRelativePath(root, filePath);
 		})
 	);
@@ -439,6 +442,32 @@ export async function getStringifiedLookupMap({
 	return JSON.stringify(filePathByLookupId);
 }
 
+/**
+ * Check for slug in content entry frontmatter and validate the type,
+ * falling back to the `generatedSlug` if none is found.
+ */
+export async function getEntrySlug({
+	id,
+	collection,
+	generatedSlug,
+	contentEntryType,
+	fileUrl,
+	fs,
+}: {
+	fs: typeof fsMod;
+	id: string;
+	collection: string;
+	generatedSlug: string;
+	fileUrl: URL;
+	contentEntryType: Pick<ContentEntryType, 'getEntryInfo'>;
+}) {
+	const { slug: frontmatterSlug } = await contentEntryType.getEntryInfo({
+		fileUrl,
+		contents: await fs.promises.readFile(fileUrl, 'utf-8'),
+	});
+	return parseEntrySlug({ generatedSlug, frontmatterSlug, id, collection });
+}
+
 export function getExtGlob(exts: string[]) {
 	return exts.length === 1
 		? // Wrapping {...} breaks when there is only one extension

packages/astro/src/content/vite-plugin-content-imports.ts

@@ -14,7 +14,7 @@ import {
 	getContentPaths,
 	getEntryData,
 	getEntryInfo,
-	getEntrySlug,
+	parseEntrySlug,
 	getEntryType,
 	globalContentConfigObserver,
 	NoCollectionError,
@@ -221,7 +221,7 @@ export function astroContentImportPlugin({
 		const _internal = { filePath: fileId, rawData: rawData };
 		// TODO: move slug calculation to the start of the build
 		// to generate a performant lookup map for `getEntryBySlug`
-		const slug = getEntrySlug({
+		const slug = parseEntrySlug({
 			id,
 			collection,
 			generatedSlug,