import type { ColdCode } from "../core/types.js";
import { Matter, type MatterInit } from "./matter.js";
/** True when code belongs to KERIpy `BextCodex`/StrB64 family. */
export declare function isBexterCode(code: string): boolean;
/**
 * CESR Base64-text primitive (`bext`) with compact StrB64 encoding.
 *
 * KERIpy correspondence:
 * - mirrors the `Bexter`/StrB64 family contract: payload text is already
 *   restricted to Base64 URL-safe characters, so the qualified form can be more
 *   compact than generic UTF-8 text primitives
 *
 * Invariant:
 * - `code` must belong to the StrB64/Bexter codex family
 */
export declare class Bexter extends Matter {
    /** Convert bext text into CESR raw payload bytes. */
    static rawify(bext: string): Uint8Array;
    /** Decode CESR raw payload bytes back into bext text. */
    static derawify(raw: Uint8Array, code: string): string;
    constructor(init: Matter | MatterInit);
    /** Base64 text payload value without CESR code prefix. */
    get bext(): string;
}
/**
 * Parse and hydrate a `Bexter` from txt/qb2 bytes.
 *
 * Boundary contract: parser chooses domain from `cold`, while this constructor
 * enforces codex membership and exposes semantic `bext` accessors.
 */
export declare function parseBexter(input: Uint8Array, cold: Extract<ColdCode, "txt" | "bny">): Bexter;
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