import { Cell } from "@ton/core";
/**
 * Decode a base64-encoded BOC payload to a plain-text comment or raw Cell.
 * Fragment returns transaction comments as TON Cells in base64.
 * Text comments (op=0) are decoded to readable strings.
 * Structured messages (op!=0) are returned as Cell objects.
 */
export declare function decodeBocComment(payload: string): string | Cell;
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