/**
 * Content-driven composer height (classic parity for Shift+Enter multi-line).
 *
 * The shell passes a max text-row budget; the editor grows from 1 up to that
 * budget based on hard newlines and soft-wrap at the input width.
 */
/** Visual rows for the current prompt (newlines + width wrap). Empty → 1. */
export declare function countComposerVisualLines(text: string, wrapWidth: number): number;
/** Clamp content rows into the [min, max] budget. */
export declare function resolveComposerTextRows(contentLines: number, maxRows: number, minRows?: number): number;
/**
 * Max editable text rows the terminal can spare while keeping a chat floor.
 * `borderRows` accounts for the rounded input chrome around the textarea.
 */
export declare function maxComposerTextRows(opts: {
    readonly terminalRows: number;
    readonly statusHeight: number;
    readonly minChatRows: number;
    readonly maxCap: number;
    readonly borderRows?: number;
}): number;