export declare const base64: {
    encodeb64: (uintarray: ArrayBuffer | SharedArrayBuffer) => string;
    blobToBase64: (blob: Blob) => Promise<string>;
    decodeb64: (b64String: string) => Uint8Array;
    objToSortedArray: (obj: {
        [k: string]: string;
    }) => string[][];
    arrayToObject: (arr: string[][]) => {
        [k: string]: string;
    };
};
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