import { Cell } from '@ton/core';
export declare const defaultJettonKeys: string[];
export declare const defaultNftKeys: string[];
export declare function displayContentCell(content: Cell, jetton?: boolean, additional?: string[]): void;
export declare function unpackJettonOnchainMetadata(content: Cell, jetton?: boolean, additional?: string[]): {
    [key: string]: string;
};
export declare function packOffchainMetadata(data: string): Cell;
export declare function packJettonOnchainMetadata(data: {
    [s: string]: string | undefined;
}): Cell;