import * as Effect from "effect/Effect";
import * as Layer from "effect/Layer";
import * as ServiceMap from "effect/Context";
import { type Glyphs } from "./glyphs.js";
import { type ScenePart } from "./scene.js";
import { OutputStreams, type OutputWriteFailed } from "./streams.js";
/** Screen selects one foreground owner; Frame knows nothing about operations. */
export interface ActiveView {
    readonly owner: symbol;
    readonly kind: "activity" | "interaction";
    readonly part: ScenePart;
}
declare const Frame_base: ServiceMap.ServiceClass<Frame, "axm.sh/screen/Frame", {
    readonly stdout: (content: string) => Effect.Effect<void, OutputWriteFailed>;
    readonly stderr: (content: string) => Effect.Effect<void, OutputWriteFailed>;
    /** Append a milestone and replace the foreground under one write permit. */
    readonly updateActive: (active: ActiveView | undefined, content?: string, immediate?: boolean) => Effect.Effect<void, OutputWriteFailed>;
    /** A stale owner cannot finish or clear a newer interaction. */
    readonly finishActive: (owner: symbol, content: string, next?: ActiveView) => Effect.Effect<void, OutputWriteFailed>;
    readonly canInteract: Effect.Effect<boolean>;
    readonly settle: Effect.Effect<void, OutputWriteFailed>;
}>;
export declare class Frame extends Frame_base {
}
interface FrameOptions {
    readonly animate: boolean;
    readonly quiet: boolean;
    readonly colors: boolean;
    readonly glyphs?: Glyphs;
}
/** Serializes writes and owns only the transient tail, never the transcript. */
export declare const FrameLive: (options: FrameOptions) => Layer.Layer<Frame, never, OutputStreams>;
export {};
//# sourceMappingURL=frame.d.ts.map