import type { Channel } from 'storybook/internal/channels';
import type { StoryStore } from 'storybook/internal/preview-api';
import type { OnlyItems, SkipItems } from '../isomorphic/types.ts';
interface HappoTime {
    originalDateNow: typeof Date.now;
    originalSetTimeout: typeof setTimeout;
}
declare global {
    var happoTime: HappoTime | undefined;
    var happoSkipped: SkipItems | undefined;
    var happoOnly: OnlyItems | null | undefined;
    var __IS_HAPPO_RUN: boolean | undefined;
    var __STORYBOOK_CLIENT_API__: {
        _storyStore: StoryStore<any>;
    } | undefined;
    var __STORYBOOK_PREVIEW__: {
        storyStoreValue: StoryStore<any>;
    } | undefined;
    var __STORYBOOK_ADDONS_CHANNEL__: Channel | undefined;
}
export declare function forceHappoScreenshot(stepLabel: string): void;
export declare function setDefaultDelay(delay: number): void;
export declare function setRenderTimeoutMs(timeoutMs: number): void;
export declare function setThemeSwitcher(func: (theme: string, channel: Channel) => Promise<void>): void;
export declare function setShouldWaitForCompletedEvent(swfce: boolean): void;
export declare const isHappoRun: () => boolean;
export {};
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