import { Branded } from 'schemata-ts/brand';
import * as PB from 'schemata-ts/PatternBuilder';
import { SchemaExt } from 'schemata-ts/SchemaExt';
interface Base64Brand {
    readonly Base64: unique symbol;
}
/**
 * Representing a Base64-encoded string.
 *
 * For a URL-safe version, @see Base64UrlSafe module
 *
 * @since 1.0.0
 * @category Model
 */
export declare type Base64 = Branded<string, Base64Brand>;
/**
 * @since 1.0.0
 * @category Model
 */
export declare type Base64S = SchemaExt<string, Base64>;
/**
 * /^([A-Za-z0-9+/]*?([=]{0,2}))$/
 *
 * @since 1.0.0
 * @category Pattern
 */
export declare const base64: PB.Pattern;
/**
 * Representing a Base64-encoded string.
 *
 * For a URL-safe version, @see Base64UrlSafe module
 *
 * @since 1.0.0
 * @category Schema
 */
export declare const Base64: Base64S;
export {};
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