loader() — astro Function Reference

Architecture documentation for the loader() function in post-loader.ts from the astro codebase.

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IntegrationAdapters→ SsrAdapters→ loader() — astro Function Reference

Dependency Diagram

graph TD
  fe66fdcc_3c3d_8589_b74a_68ff0a62c7f3["loader()"]
  0e04d4be_ef0b_7b26_b83b_e833aa6e47ee["post-loader.ts"]
  fe66fdcc_3c3d_8589_b74a_68ff0a62c7f3 -->|defined in| 0e04d4be_ef0b_7b26_b83b_e833aa6e47ee
  style fe66fdcc_3c3d_8589_b74a_68ff0a62c7f3 fill:#6366f1,stroke:#818cf8,color:#fff

Relationship Graph

Source Code

packages/astro/test/fixtures/content-layer/src/loaders/post-loader.ts lines 8–53

export function loader(config:PostLoaderConfig): Loader {
	return {
		name: "post-loader",
		load: async ({
			store, meta, logger
		}) => {
			logger.info('Loading posts');

			const lastSynced = meta.get('lastSynced');

			// Don't sync more than once a minute
			if (lastSynced && (Date.now() - Number(lastSynced) < 1000 * 60)) {
					logger.info('Skipping sync');
					return;
			}

			const posts = await fetch(config.url)
				.then((res) => res.json());

			store.clear();

			for (const data of posts) {
				store.set({id: data.id, data});
			}
			meta.set('lastSynced', String(Date.now()));
		},
		createSchema: async () => {
			// Simulate a delay
			await new Promise((resolve) => setTimeout(resolve, 1000));
			return {
				schema: z.object({
				title: z.string(),
				body: z.string(),
				userId: z.number(),
				id: z.number(),
			}),
			types: /* ts */`export interface Entry {
	title: string;
	body: string;
	userId: number;
	id: number;
}`
			}
		}
	};
}