import { Bootstring } from "../Bootstring";
import { FullyMappedAlphabet, PartiallyMappedAlphabet } from "../MappedAlphabet";
import { SimpleNthBase } from "../SimpleNthBase";
export declare const delimiter = "X";
/**
 * An alphabet containing only alphanumeric characters
 */
export declare const alphaNumericAlphabet: FullyMappedAlphabet;
/**
 * An alphabet containing all unicode characters, but where the alphanumeric are first
 * (it begins with the `alphaNumericAlphabet` alphabet)
 */
export declare const remappedUnicode: PartiallyMappedAlphabet;
/**
 * A base using 61 digits - that is all the alphanumeric but the delimiter `'X'`
 */
export declare const base61: SimpleNthBase;
/**
 * An encoder/decoders that encodes string using only alphanumeric characters
 */
export declare const strictAlphaNumeric: Bootstring;
export default strictAlphaNumeric;