import type { Readable } from "node:stream";
export interface HttpDownload {
    getStream(url: string): Promise<Readable>;
    headCheck(url: string): Promise<{
        ok: boolean;
        status: number;
        size?: number;
    }>;
    close?(): Promise<void>;
}
export declare class FetchHttpDownload implements HttpDownload {
    private readonly rateLimitMs;
    private lastRequest;
    constructor(rateLimitMs?: number);
    headCheck(url: string): Promise<{
        ok: boolean;
        status: number;
        size?: number;
    }>;
    getStream(url: string): Promise<Readable>;
}
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