export interface CorsOptions {
    useProxy?: boolean;
    proxyUrl?: string;
    corsHeaders?: Record<string, string>;
    allowLocalhost?: boolean;
}
export declare function createCorsAwareFetch(options?: CorsOptions): (input: RequestInfo | URL, init?: RequestInit) => Promise<Response>;
export declare function isCrossOrigin(url: string): boolean;
export declare function createProxyUrl(targetUrl: string, proxyBaseUrl: string): string;
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