/**
 * Text Functions — Native RuntimeValue implementations.
 */
import type { RuntimeValue } from "../runtime/values.js";
/** Type alias for a native text function. */
type NativeFn = (args: RuntimeValue[]) => RuntimeValue;
export declare const fnCONCATENATE: NativeFn;
export declare const fnCONCAT: NativeFn;
export declare const fnTEXTJOIN: NativeFn;
export declare const fnLEFT: NativeFn;
export declare const fnRIGHT: NativeFn;
export declare const fnMID: NativeFn;
export declare const fnLEN: NativeFn;
export declare const fnTRIM: NativeFn;
export declare const fnLOWER: NativeFn;
export declare const fnUPPER: NativeFn;
export declare const fnPROPER: NativeFn;
export declare const fnSUBSTITUTE: NativeFn;
export declare const fnREPLACE: NativeFn;
export declare const fnFIND: NativeFn;
export declare const fnSEARCH: NativeFn;
export declare const fnREPT: NativeFn;
export declare const fnTEXT: NativeFn;
export declare const fnVALUE: NativeFn;
export declare const fnEXACT: NativeFn;
export declare const fnCODE: NativeFn;
export declare const fnCHAR: NativeFn;
export declare const fnCLEAN: NativeFn;
export declare const fnT: NativeFn;
export declare const fnUNICHAR: NativeFn;
export declare const fnUNICODE: NativeFn;
export declare const fnBAHTTEXT: NativeFn;
export declare const fnDOLLAR: NativeFn;
export declare const fnFIXED: NativeFn;
export declare const fnASC: NativeFn;
export declare const fnDBCS: NativeFn;
export declare const fnJIS: NativeFn;
export declare const fnPHONETIC: NativeFn;
export declare const fnNUMBERVALUE: NativeFn;
export declare const fnTEXTBEFORE: NativeFn;
export declare const fnTEXTAFTER: NativeFn;
export declare const fnTEXTSPLIT: NativeFn;
/**
 * REGEXTEST(text, pattern, [case_sensitivity]) — returns TRUE iff the
 * regex matches any substring of `text`.
 */
export declare const fnREGEXTEST: NativeFn;
/**
 * REGEXEXTRACT(text, pattern, [return_mode], [case_sensitivity]) —
 *   return_mode = 0 (default) → first match as a string
 *   return_mode = 1 → all matches as a 1-column array
 *   return_mode = 2 → capture groups of the first match as a 1-row array
 */
export declare const fnREGEXEXTRACT: NativeFn;
/**
 * REGEXREPLACE(text, pattern, replacement, [occurrence], [case_sensitivity]) —
 *   occurrence = 0 (default) → replace all
 *   occurrence = n (positive) → replace only the n-th match
 *   occurrence = n (negative) → replace only the n-th-last match
 */
export declare const fnREGEXREPLACE: NativeFn;
/**
 * VALUETOTEXT(value, [format]) — format a scalar or 1×1 array as text.
 * For multi-cell arrays, this applies implicit intersection at the
 * evaluator layer — so by the time we see args[0] it is already scalar.
 */
export declare const fnVALUETOTEXT: NativeFn;
/**
 * ARRAYTOTEXT(array, [format]) — flatten an array to a delimited text
 * representation.
 *
 * Format 0 (concise, default): row-major join with ", ".
 * Format 1 (strict): wraps output in `{…}`, rows separated by `;`,
 *   cells by `,`; strings inside quoted.
 */
export declare const fnARRAYTOTEXT: NativeFn;
/**
 * ENCODEURL(text) — percent-encode a string for URL use.
 *
 * Excel follows RFC 3986's "unreserved" character rule: A-Z, a-z, 0-9,
 * and `- _ . ~` are kept verbatim; everything else is encoded as
 * `%HH` using the UTF-8 byte sequence. This is exactly what JavaScript's
 * `encodeURIComponent` does, so we delegate to it.
 */
export declare const fnENCODEURL: NativeFn;
export {};