import { Effects } from '../../../base/lib/Effects';
import { Manifest, PackageId } from '../../../base/lib/osBindings';
export declare class GetServiceManifest<Mapped = Manifest> {
    readonly effects: Effects;
    readonly packageId: PackageId;
    readonly map: (manifest: Manifest | null) => Mapped;
    readonly eq: (a: Mapped, b: Mapped) => boolean;
    constructor(effects: Effects, packageId: PackageId, map: (manifest: Manifest | null) => Mapped, eq: (a: Mapped, b: Mapped) => boolean);
    /**
     * Returns the manifest of a service. Reruns the context from which it has been called if the underlying value changes
     */
    const(): Promise<Mapped>;
    /**
     * Returns the manifest of a service. Does nothing if it changes
     */
    once(): Promise<Mapped>;
    private watchGen;
    /**
     * Watches the manifest of a service. Returns an async iterator that yields whenever the value changes
     */
    watch(abort?: AbortSignal): AsyncGenerator<Mapped, never, unknown>;
    /**
     * Watches the manifest of a service. Takes a custom callback function to run whenever it changes
     */
    onChange(callback: (value: Mapped | null, error?: Error) => {
        cancel: boolean;
    } | Promise<{
        cancel: boolean;
    }>): void;
    /**
     * Watches the manifest of a service. Returns when the predicate is true
     */
    waitFor(pred: (value: Mapped) => boolean): Promise<Mapped>;
}
export declare function getServiceManifest(effects: Effects, packageId: PackageId): GetServiceManifest<Manifest>;
export declare function getServiceManifest<Mapped>(effects: Effects, packageId: PackageId, map: (manifest: Manifest | null) => Mapped, eq?: (a: Mapped, b: Mapped) => boolean): GetServiceManifest<Mapped>;