import { Schema } from "effect";
/**
 * Regular expression that matches valid hexadecimal strings.
 * Validates that a string:
 * - Contains only hexadecimal characters (0-9, a-f)
 * - Has an even number of characters (bytes are represented as pairs of hex digits)
 * - Can be empty (matches zero or more pairs)
 */
export declare const HEX_REGEX: RegExp;
export declare const HexStringFilter: <Source extends string, Target>(self: Schema.Schema<Source, Target>) => Schema.refine<Source, Schema.Schema<Source, Target, never>>;
export declare const HexStringSchema: Schema.refine<string, typeof Schema.String>;
export declare const Uint8ArraySchema: Schema.declare<Uint8Array<ArrayBufferLike>, Uint8Array<ArrayBufferLike>, readonly [], never>;
//# sourceMappingURL=Combinator.d.ts.map