import { GasFreeError } from './GasFreeError';
export declare class InvalidPSBTError extends GasFreeError {
    readonly validationErrors?: string[];
    readonly psbtPreview?: string;
    constructor(message: string, validationErrors?: string[], psbt?: string, originalError?: Error);
    static constructionFailed(reason: string, originalError?: Error): InvalidPSBTError;
    static validationFailed(errors: string[], psbt?: string): InvalidPSBTError;
    static malformed(reason: string, psbt?: string): InvalidPSBTError;
    toJSON(): Record<string, unknown>;
}
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