import { type Component, type Focusable } from "../tui";
declare const secretValueIssuer: unique symbol;
/**
 * A one-shot secret transfer handle. The contained value is cleared immediately
 * after it is consumed and cannot be read through any other public API.
 */
export declare class SecretValue {
    #private;
    /** @internal SecretInput is the sole issuer of usable SecretValue handles. */
    constructor(value: string, issuer: typeof secretValueIssuer);
    consume(): string;
}
/**
 * A single-line masked input for credentials and other write-only secrets.
 *
 * The editing behavior follows Input, but render output is derived only from
 * grapheme counts; the backing characters are never returned or rendered.
 */
export declare class SecretInput implements Component, Focusable {
    #private;
    readonly placeholder: string;
    onSubmit?: (value: SecretValue) => void;
    onEscape?: () => void;
    /** Focusable interface - set by TUI when focus changes. */
    focused: boolean;
    constructor(options?: {
        placeholder?: string;
    });
    handleInput(data: string): void;
    clear(): void;
    dispose(): void;
    invalidate(): void;
    render(width: number): string[];
}
export {};