import { Cause } from "@effect/core/io/Cause/definition";
import { Fiber } from "@effect/core/io/Fiber/definition";
import { Effect } from "@effect/core/io/Effect/definition";
import type { FiberRuntime } from "@effect/core/io/Fiber/_internal/runtime";
export type FiberMessage = InterruptSignal | Stateful | Resume | YieldNow;
export declare class InterruptSignal {
    readonly cause: Cause<never>;
    readonly _tag = "InterruptSignal";
    constructor(cause: Cause<never>);
}
export declare class Stateful {
    readonly onFiber: (fiber: FiberRuntime<any, any>, status: Fiber.Status) => void;
    readonly _tag = "Stateful";
    constructor(onFiber: (fiber: FiberRuntime<any, any>, status: Fiber.Status) => void);
}
export declare class Resume {
    readonly effect: Effect<any, any, any>;
    readonly _tag = "Resume";
    constructor(effect: Effect<any, any, any>);
}
export declare class YieldNow {
    readonly _tag = "YieldNow";
}
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