import type { KeyEvent, SceneNode } from "../types.js";
export type ScreenResult = {
    type: "stay";
} | {
    type: "push";
    id: string;
} | {
    type: "pop";
} | {
    type: "overlay";
    id: string;
} | {
    type: "command";
    id: string;
} | {
    type: "exit";
};
export interface ScreenContext {
    width: number;
    height: number;
}
export interface Screen {
    id: string;
    render(ctx: ScreenContext): SceneNode;
    handle(event: KeyEvent, ctx: ScreenContext): ScreenResult;
}
export declare const stay: ScreenResult;
export declare const exit: ScreenResult;
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