export declare function moveCursorToEnd(editableDiv: HTMLDivElement): void;
export declare function getCursorPosition(editableDiv: HTMLDivElement): number;
export declare function getSelectionOffsets(editableDiv: HTMLDivElement): {
    start: number;
    end: number;
};
/**
 * Cmd/Ctrl+Z / Shift+Cmd+Z / Ctrl+Y redo — `onChange` must not run
 * `handleFormulaInput` or history append for these (Mac uses metaKey, not ctrlKey).
 */
export declare function isEditorUndoRedoKeyEvent(e: KeyboardEvent): boolean;
/**
 * Use the same rule for cell input and fx bar: custom stack when the line is a
 * formula (=…) or the stack already has snapshots (plain/rich text edits).
 */
export declare function shouldUseCustomEditorHistory(editorInnerTextTrimmed: string, historyActive: boolean): boolean;
export declare function setCursorPosition(editableDiv: HTMLDivElement, targetOffset: number): void;
export declare function setSelectionOffsets(editableDiv: HTMLDivElement, startOffset: number, endOffset: number): void;
export declare function buildFormulaSuggestionText(editableDiv: HTMLDivElement, formulaName: string): {
    text: string;
    caretOffset: number;
};
export declare function isLetterNumberPattern(str: string): boolean;
export declare function isStrictFormulaEditorText(editor: HTMLDivElement | null): boolean;
/** Same rule as InputBox/Fx onChange: show function list while typing a name after `=`. */
export declare function shouldShowFormulaFunctionList(editor: HTMLDivElement | null): boolean;
/**
 * True when the formula looks complete at the caret:
 * - strict first character '='
 * - caret at end of editor text
 * - parentheses are balanced (no negative depth; final depth 0)
 */
export declare function isFormulaCompleteAtCaret(editor: HTMLDivElement | null): boolean;
/**
 * When the caret sits on a function name span or its opening-paren span, return
 * that function's name (uppercase). Used so nested formulas like `SUM(MIN(`
 * show the inner function's hint when the caret is inside `MIN` / `MIN(`.
 *
 * Rules (match generated formula HTML):
 * - Caret inside/outside a `luckysheet-formula-text-func` span whose immediate
 *   next element sibling is `luckysheet-formula-text-lpar` → that function.
 * - Caret inside a `luckysheet-formula-text-lpar` span whose immediate previous
 *   element sibling is `luckysheet-formula-text-func` → that function.
 */
export declare function getFunctionNameFromFormulaCaretSpans(editor: HTMLDivElement | null): string | null;
export declare function removeLastSpan(htmlString: string): string;
export declare function numberToColumn(colNumber: number): string;
export declare function incrementColumn(cell: string): string;
export declare function decrementColumn(cell: string): string;
export declare function incrementRow(cell: string): string;
export declare function decrementRow(cell: string): string;
export declare function countCommasBeforeCursor(editableDiv: HTMLDivElement): number;