import { BaseError } from './base';
type UnsafeNavigationUrlErrorParams = {
    scheme: string;
};
/**
 * Thrown when navigation is attempted to a URL whose scheme is not in the
 * allowlist (only `http:` and `https:` are permitted). Guards against DOM XSS
 * (`javascript:` URIs) and other dangerous schemes (`data:`, `blob:`, etc.)
 * that could originate from a poisoned server response or cached project
 * settings flowing into `window.location.href`.
 */
export declare class UnsafeNavigationUrlError extends BaseError {
    constructor({ scheme }: UnsafeNavigationUrlErrorParams);
}
export {};
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