/**
 * Normalize headers:
 *
 * - Electron modifies the headers to allow CORS, this function hides the modifications
 * - Restores original headers
 * - Normalizes the header keys
 * - Sorts headers alphabetically
 * - converts to an object
 *
 */
export declare const normalizeHeaders: (_headers: Headers, removeProxyHeaders?: boolean) => Record<string, string>;
/** Make the first letter and all letters after a dash uppercase */
export declare const formatHeaderKey: (key: string) => string;
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