/**
 * Input element key handler — manages text editing operations for <input>.
 *
 * Given a key event and the current input state (value + cursor position),
 * produces the next state. The screen wires this into the key dispatch loop
 * for any focused <input> node.
 */
import type { ParsedKey } from "./parse-keypress.js";
export interface InputState {
    cursorPos: number;
    value: string;
}
export interface InputResult {
    /** Whether onChange should be called (value changed) */
    changed: boolean;
    /** New cursor position */
    cursorPos: number;
    /** Whether onSubmit should be called (Enter without shift in single-line, or ctrl+enter) */
    submit: boolean;
    /** New value after the key operation */
    value: string;
}
/**
 * Process a key event against input state, returning the next state.
 * Pure function — no side effects.
 */
export declare function handleInputKey(key: ParsedKey, state: InputState, options?: {
    multiline?: boolean;
}): InputResult;
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