export { Fiber as t };
/**
 * A fiber's state.
 */
export declare enum State {
    Active = "Active",
    Terminated = "Terminated"
}
/**
 * A `Fiber` represents a lightweight background task. Unlike a thread, the
 * lifecycle of a fiber is managed entirely by the user program.
 *
 * A fiber starts in an `Active` state and may be terminated at some unknown
 * point in the future.
 */
export declare class Fiber {
    #private;
    /**
     * A unique identifier for this fiber.
     */
    readonly id: string;
    get state(): State;
    stateChange: import("./Observable/Observable.js").t<State>;
    constructor(
    /**
     * A unique identifier for this fiber.
     */
    id?: string);
    /**
     * Terminates the fiber. The fiber's state will transition to `Terminated` and
     * then complete.
     */
    terminate(): void;
    [Symbol.dispose](): void;
}
/**
 * Get a reference to a Fiber from its id.
 */
export declare const get: <T extends Fiber>(id: string) => T | null;
/**
 * Creates a new `Fiber`.
 */
export declare const init: (id?: string) => Fiber;
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