export declare function detectFeatures(code: string | string[]): Set<string>;
export declare function loadRequiredFeatures(code: string | string[]): Promise<void>;
export declare function collectHyperscriptFromDocument(): string[];
export declare function preloadDocumentFeatures(): Promise<void>;
export declare function isFeatureLoaded(feature: string): boolean;
export declare function getLoadedFeatures(): string[];
export declare function preloadFeatures(features: string[]): Promise<void>;
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