export declare const baseChars = "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/";
export declare const lookup: string[];
export declare const revLookup: number[];
export declare const ErrMsg: {
    base64Invalidlength: string;
    base64InvalidEqualPosition: string;
    encodeInvalidParam: string;
    fromArrayBufferInvalidParam: string;
    notString: string;
    notValidB64String: string;
    notValidB64URLString: string;
    notValidB64Length: string;
    notValidB64URLLength: string;
    startMustGrossOrEqualToEnd: string;
    startMustGrossToEnd: string;
    textEncoderUndefined: string;
    textDecoderUndefined: string;
};
export declare const defaultConfig: {
    forceBrowser: boolean;
};