/**
 * xlsx FORMULAS — A1 ↔ R1C1 conversion.
 *
 * OWNERSHIP: FORMULA agent (see ast.ts header).
 *
 * Both functions are thin compositions over the parser and serializer:
 * parse in one style, serialize in the other, same anchor. The AST's
 * absolute-coordinate model (ast.ts header) makes the conversion exact —
 * `$`-absolute axes convert to bare R1C1 numbers, relative axes to
 * bracketed offsets, and vice versa.
 *
 * Output is canonical user-facing text (clean function names, no
 * `_xlfn.` prefixes); the two functions are inverse of each other for
 * any canonical input with the same anchor.
 */
import type { CellAddress } from '../internal.js';
/**
 * Convert a formula from A1 to R1C1 text. `anchor` is the cell the
 * formula lives in ('D2' or {row, col}); a leading '=' in the input is
 * accepted and not re-emitted. Throws on invalid input (same errors as
 * `parseFormula`).
 *
 * ```ts
 * a1ToR1C1('SUM(B2:C2)', 'D2')  // → 'SUM(RC[-2]:RC[-1])'
 * a1ToR1C1('$B$2', 'D2')        // → 'R2C2'
 * ```
 */
export declare function a1ToR1C1(formula: string, anchor: string | CellAddress): string;
/**
 * Convert a formula from R1C1 to A1 text. `anchor` is the cell the
 * formula lives in. Throws when a relative offset lands outside the
 * sheet (e.g. R[-1] anchored at row 1).
 *
 * ```ts
 * r1c1ToA1('SUM(RC[-2]:RC[-1])', 'D2')  // → 'SUM(B2:C2)'
 * ```
 */
export declare function r1c1ToA1(formula: string, anchor: string | CellAddress): string;
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