astro
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Astro is a modern site builder with web best practices, performance, and DX front-of-mind.
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TypeScript
export type RemoteCacheEntry = {
data: string;
expires: number;
etag?: string;
lastModified?: string;
};
export declare function loadRemoteImage(src: string): Promise<{
data: Buffer;
expires: number;
etag: string | undefined;
lastModified: string | undefined;
}>;
/**
* Revalidate a cached remote asset using its entity-tag or modified date.
* Uses the [If-None-Match](https://developer.mozilla.org/en-US/docs/Web/HTTP/Headers/If-None-Match) and [If-Modified-Since](https://developer.mozilla.org/en-US/docs/Web/HTTP/Headers/If-Modified-Since)
* headers to check with the remote server if the cached version of a remote asset is still up to date.
* The remote server may respond that the cached asset is still up-to-date if the entity-tag or modification time matches (304 Not Modified), or respond with an updated asset (200 OK)
* @param src - url to remote asset
* @param revalidationData - an object containing the stored Entity-Tag of the cached asset and/or the Last Modified time
* @returns An ImageData object containing the asset data, a new expiry time, and the asset's etag. The data buffer will be empty if the asset was not modified.
*/
export declare function revalidateRemoteImage(src: string, revalidationData: {
etag?: string;
lastModified?: string;
}): Promise<{
data: Buffer;
expires: number;
etag: string | undefined;
lastModified: string | undefined;
}>;