Add file generation and flag for content intellisense

.changeset/serious-pumas-run.md

@@ -0,0 +1,21 @@
+---
+'astro': minor
+---
+
+Adds support for Intellisense features (e.g. code completion, quick hints) for your content collection entries in compatible editors under the `experimental.contentIntellisense` flag.
+
+```js
+import { defineConfig } from 'astro';
+
+export default defineConfig({
+	experimental: {
+		contentIntellisense: true
+	}
+})
+```
+
+When enabled, this feature will generate and add JSON schemas to the `.astro` directory in your project. These files can be used by the Astro language server to provide Intellisense inside content files (`.md`, `.mdx`, `.mdoc`).
+
+Note that at this time, this also require enabling the `astro.content-intellisense` option in your editor, or passing the `contentIntellisense: true` initialization parameter to the Astro language server for editors using it directly.
+
+See the [experimental content Intellisense docs](https://docs.astro.build/en/reference/configuration-reference/#experimentalcontentintellisense) for more information updates as this feature develops.

packages/astro/src/@types/astro.ts

@@ -1,5 +1,3 @@
-import type { OutgoingHttpHeaders } from 'node:http';
-import type { AddressInfo } from 'node:net';
 import type {
 	MarkdownHeading,
 	MarkdownVFile,
@@ -9,6 +7,8 @@ import type {
 	ShikiConfig,
 } from '@astrojs/markdown-remark';
 import type * as babel from '@babel/core';
+import type { OutgoingHttpHeaders } from 'node:http';
+import type { AddressInfo } from 'node:net';
 import type * as rollup from 'rollup';
 import type * as vite from 'vite';
 import type {
@@ -79,7 +79,7 @@ export type {
 	UnresolvedImageTransform,
 } from '../assets/types.js';
 export type { RemotePattern } from '../assets/utils/remotePattern.js';
-export type { SSRManifest, AssetsPrefix } from '../core/app/types.js';
+export type { AssetsPrefix, SSRManifest } from '../core/app/types.js';
 export type {
 	AstroCookieGetOptions,
 	AstroCookieSetOptions,
@@ -2186,6 +2186,30 @@ export interface AstroUserConfig {
 		 */
 		serverIslands?: boolean;
 
+		/**
+		 * @docs
+		 * @name experimental.contentCollectionIntellisense
+		 * @type {boolean}
+		 * @default `false`
+		 * @version 4.14.0
+		 * @description
+		 *
+		 * Enables Intellisense features (e.g. code completion, quick hints) for your content collection entries in compatible editors.
+		 *
+		 * When enabled, this feature will generate and add JSON schemas to the `.astro` directory in your project. These files can be used by the Astro language server to provide Intellisense inside content files (`.md`, `.mdx`, `.mdoc`).
+		 *
+		 * ```js
+		 * {
+		 *   experimental: {
+		 *     contentIntellisense: true,
+		 *   },
+		 * }
+		 * ```
+		 *
+		 * To use this feature with the Astro VS Code extension, you must also enable the `astro.content-intellisense` option in your VS Code settings. For editors using the Astro language server directly, pass the `contentIntellisense: true` initialization parameter to enable this feature.
+		 */
+		contentIntellisense?: boolean;
+
 		/**
 		 * @docs
 		 * @name experimental.contentLayer

packages/astro/src/content/content-layer.ts

@@ -230,6 +230,42 @@ export class ContentLayer {
 		const modulesImportsFile = new URL(MODULES_IMPORTS_FILE, this.#settings.dotAstroDir);
 		await this.#store.writeModuleImports(modulesImportsFile);
 		logger.info('Synced content');
+		if (this.#settings.config.experimental.contentIntellisense) {
+			await this.regenerateCollectionFileManifest();
+		}
+	}
+
+	async regenerateCollectionFileManifest() {
+		const collectionsManifest = new URL('collections/collections.json', this.#settings.dotAstroDir);
+		this.#logger.debug('content', 'Regenerating collection file manifest');
+		if (existsSync(collectionsManifest)) {
+			try {
+				const collections = await fs.readFile(collectionsManifest, 'utf-8');
+				const collectionsJson = JSON.parse(collections);
+				collectionsJson.entries ??= {};
+
+				for (const { hasSchema, name } of collectionsJson.collections) {
+					if (!hasSchema) {
+						continue;
+					}
+					const entries = this.#store.values(name);
+					if (!entries?.[0]?.filePath || entries[0].filePath.endsWith('.json')) {
+						continue;
+					}
+					for (const { filePath } of entries) {
+						if (!filePath) {
+							continue;
+						}
+						const key = new URL(filePath, this.#settings.config.root).href.toLowerCase();
+						collectionsJson.entries[key] = name;
+					}
+				}
+				await fs.writeFile(collectionsManifest, JSON.stringify(collectionsJson, null, 2));
+			} catch {
+				this.#logger.error('content', 'Failed to regenerate collection file manifest');
+			}
+		}
+		this.#logger.debug('content', 'Regenerated collection file manifest');
 	}
 }
 

packages/astro/src/content/data-store.ts

@@ -64,16 +64,16 @@ export class DataStore {
 		this.#collections = new Map();
 	}
 
-	get<T = unknown>(collectionName: string, key: string): T | undefined {
+	get<T = DataEntry>(collectionName: string, key: string): T | undefined {
 		return this.#collections.get(collectionName)?.get(String(key));
 	}
 
-	entries<T = unknown>(collectionName: string): Array<[id: string, T]> {
+	entries<T = DataEntry>(collectionName: string): Array<[id: string, T]> {
 		const collection = this.#collections.get(collectionName) ?? new Map();
 		return [...collection.entries()];
 	}
 
-	values<T = unknown>(collectionName: string): Array<T> {
+	values<T = DataEntry>(collectionName: string): Array<T> {
 		const collection = this.#collections.get(collectionName) ?? new Map();
 		return [...collection.values()];
 	}
@@ -217,7 +217,7 @@ export default new Map([${exports.join(', ')}]);
 		for (const [fileName, specifier] of this.#moduleImports) {
 			lines.push(`['${fileName}', () => import('${specifier}')]`);
 		}
-		const code = /* js */ `
+		const code =  `
 export default new Map([\n${lines.join(',\n')}]);
 		`;
 		try {

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

@@ -1,20 +1,20 @@
+import glob from 'fast-glob';
+import { bold, cyan } from 'kleur/colors';
 import type fsMod from 'node:fs';
 import * as path from 'node:path';
 import { fileURLToPath, pathToFileURL } from 'node:url';
-import glob from 'fast-glob';
-import { bold, cyan } from 'kleur/colors';
 import { type ViteDevServer, normalizePath } from 'vite';
-import { z } from 'zod';
+import { z, type ZodSchema } from 'zod';
 import { zodToJsonSchema } from 'zod-to-json-schema';
 import { printNode, zodToTs } from 'zod-to-ts';
 import type { AstroSettings, ContentEntryType } from '../@types/astro.js';
 import { AstroError } from '../core/errors/errors.js';
 import { AstroErrorData } from '../core/errors/index.js';
 import type { Logger } from '../core/logger/core.js';
 import { isRelativePath } from '../core/path.js';
-import { CONTENT_LAYER_TYPE } from './consts.js';
-import { CONTENT_TYPES_FILE, VIRTUAL_MODULE_ID } from './consts.js';
+import { CONTENT_LAYER_TYPE, CONTENT_TYPES_FILE, VIRTUAL_MODULE_ID } from './consts.js';
 import {
+	type CollectionConfig,
 	type ContentConfig,
 	type ContentObservable,
 	type ContentPaths,
@@ -358,12 +358,15 @@ function normalizeConfigPath(from: string, to: string) {
 	return `"${isRelativePath(configPath) ? '' : './'}${normalizedPath}"` as const;
 }
 
-async function typeForCollection<T extends keyof ContentConfig['collections']>(
-	collection: ContentConfig['collections'][T] | undefined,
+const schemaCache = new Map<string, ZodSchema>();
+
+async function getContentLayerSchema<T extends keyof ContentConfig['collections']>(
+	collection: ContentConfig['collections'][T],
 	collectionKey: T,
-): Promise<string> {
-	if (collection?.schema) {
-		return `InferEntrySchema<${collectionKey}>`;
+): Promise<ZodSchema | undefined> {
+	const cached = schemaCache.get(collectionKey);
+	if (cached) {
+		return cached;
 	}
 
 	if (
@@ -375,6 +378,23 @@ async function typeForCollection<T extends keyof ContentConfig['collections']>(
 		if (typeof schema === 'function') {
 			schema = await schema();
 		}
+		if (schema) {
+			schemaCache.set(collectionKey, await schema);
+			return schema;
+		}
+	}
+}
+
+async function typeForCollection<T extends keyof ContentConfig['collections']>(
+	collection: ContentConfig['collections'][T] | undefined,
+	collectionKey: T,
+): Promise<string> {
+	if (collection?.schema) {
+		return `InferEntrySchema<${collectionKey}>`;
+	}
+
+	if (collection?.type === CONTENT_LAYER_TYPE) {
+		const schema = await getContentLayerSchema(collection, collectionKey);
 		if (schema) {
 			const ast = zodToTs(schema);
 			return printNode(ast.node);
@@ -418,6 +438,8 @@ async function writeContentFiles({
 			entries: {},
 		};
 	}
+
+	let contentCollectionsMap: CollectionEntryMap = {};
 	for (const collectionKey of Object.keys(collectionEntryMap).sort()) {
 		const collectionConfig = contentConfig?.collections[JSON.parse(collectionKey)];
 		const collection = collectionEntryMap[collectionKey];
@@ -451,7 +473,7 @@ async function writeContentFiles({
 			collection.type === 'unknown'
 				? // Add empty / unknown collections to the data type map by default
 					// This ensures `getCollection('empty-collection')` doesn't raise a type error
-					collectionConfig?.type ?? 'data'
+					(collectionConfig?.type ?? 'data')
 				: collection.type;
 
 		const collectionEntryKeys = Object.keys(collection.entries).sort();
@@ -489,40 +511,60 @@ async function writeContentFiles({
 				}
 
 				if (collectionConfig?.schema) {
-					let zodSchemaForJson =
-						typeof collectionConfig.schema === 'function'
-							? collectionConfig.schema({ image: () => z.string() })
-							: collectionConfig.schema;
-					if (zodSchemaForJson instanceof z.ZodObject) {
-						zodSchemaForJson = zodSchemaForJson.extend({
-							$schema: z.string().optional(),
-						});
-					}
-					try {
-						await fs.promises.writeFile(
-							new URL(`./${collectionKey.replace(/"/g, '')}.schema.json`, collectionSchemasDir),
-							JSON.stringify(
-								zodToJsonSchema(zodSchemaForJson, {
-									name: collectionKey.replace(/"/g, ''),
-									markdownDescription: true,
-									errorMessages: true,
-									// Fix for https://github.com/StefanTerdell/zod-to-json-schema/issues/110
-									dateStrategy: ['format:date-time', 'format:date', 'integer'],
-								}),
-								null,
-								2,
-							),
-						);
-					} catch (err) {
-						// This should error gracefully and not crash the dev server
-						logger.warn(
-							'content',
-							`An error was encountered while creating the JSON schema for the ${collectionKey} collection. Proceeding without it. Error: ${err}`,
-						);
-					}
+					await generateJSONSchema(
+						fs,
+						collectionConfig,
+						collectionKey,
+						collectionSchemasDir,
+						logger,
+					);
 				}
 				break;
 		}
+
+		if (
+			settings.config.experimental.contentIntellisense &&
+			collectionConfig &&
+			(collectionConfig.schema || (await getContentLayerSchema(collectionConfig, collectionKey)))
+		) {
+			await generateJSONSchema(fs, collectionConfig, collectionKey, collectionSchemasDir, logger);
+
+			contentCollectionsMap[collectionKey] = collection;
+		}
+	}
+
+	if (settings.config.experimental.contentIntellisense) {
+		let contentCollectionManifest: {
+			collections: { hasSchema: boolean; name: string }[];
+			entries: Record<string, string>;
+		} = {
+			collections: [],
+			entries: {},
+		};
+		Object.entries(contentCollectionsMap).forEach(([collectionKey, collection]) => {
+			const collectionConfig = contentConfig?.collections[JSON.parse(collectionKey)];
+			const key = JSON.parse(collectionKey);
+
+			contentCollectionManifest.collections.push({
+				hasSchema: Boolean(collectionConfig?.schema || schemaCache.has(collectionKey)),
+				name: key,
+			});
+
+			Object.keys(collection.entries).forEach((entryKey) => {
+				const entryPath = new URL(
+					JSON.parse(entryKey),
+					contentPaths.contentDir + `${key}/`,
+				).toString();
+
+				// Save entry path in lower case to avoid case sensitivity issues between Windows and Unix
+				contentCollectionManifest.entries[entryPath.toLowerCase()] = key;
+			});
+		});
+
+		await fs.promises.writeFile(
+			new URL('./collections.json', collectionSchemasDir),
+			JSON.stringify(contentCollectionManifest, null, 2),
+		);
 	}
 
 	if (!fs.existsSync(settings.dotAstroDir)) {
@@ -551,3 +593,48 @@ async function writeContentFiles({
 		typeTemplateContent,
 	);
 }
+
+async function generateJSONSchema(
+	fsMod: typeof import('node:fs'),
+	collectionConfig: CollectionConfig,
+	collectionKey: string,
+	collectionSchemasDir: URL,
+	logger: Logger,
+) {
+	let zodSchemaForJson =
+		typeof collectionConfig.schema === 'function'
+			? collectionConfig.schema({ image: () => z.string() })
+			: collectionConfig.schema;
+
+	if (!zodSchemaForJson && collectionConfig.type === CONTENT_LAYER_TYPE) {
+		zodSchemaForJson = await getContentLayerSchema(collectionConfig, collectionKey);
+	}
+
+	if (zodSchemaForJson instanceof z.ZodObject) {
+		zodSchemaForJson = zodSchemaForJson.extend({
+			$schema: z.string().optional(),
+		});
+	}
+	try {
+		await fsMod.promises.writeFile(
+			new URL(`./${collectionKey.replace(/"/g, '')}.schema.json`, collectionSchemasDir),
+			JSON.stringify(
+				zodToJsonSchema(zodSchemaForJson, {
+					name: collectionKey.replace(/"/g, ''),
+					markdownDescription: true,
+					errorMessages: true,
+					// Fix for https://github.com/StefanTerdell/zod-to-json-schema/issues/110
+					dateStrategy: ['format:date-time', 'format:date', 'integer'],
+				}),
+				null,
+				2,
+			),
+		);
+	} catch (err) {
+		// This should error gracefully and not crash the dev server
+		logger.warn(
+			'content',
+			`An error was encountered while creating the JSON schema for the ${collectionKey} collection. Proceeding without it. Error: ${err}`,
+		);
+	}
+}

packages/astro/src/core/config/schema.ts

@@ -89,6 +89,7 @@ export const ASTRO_CONFIG_DEFAULTS = {
 		clientPrerender: false,
 		globalRoutePriority: false,
 		serverIslands: false,
+		contentIntellisense: false,
 		env: {
 			validateSecrets: false,
 		},
@@ -539,6 +540,10 @@ export const AstroConfigSchema = z.object({
 				.boolean()
 				.optional()
 				.default(ASTRO_CONFIG_DEFAULTS.experimental.serverIslands),
+			contentIntellisense: z
+				.boolean()
+				.optional()
+				.default(ASTRO_CONFIG_DEFAULTS.experimental.contentIntellisense),
 			contentLayer: z.boolean().optional().default(ASTRO_CONFIG_DEFAULTS.experimental.contentLayer),
 		})
 		.strict(