/**
 * Utility function that create an injective (one-to-one) instance factory
 * which ensures there is only one instance created for a specific target.
 * @param factory the actual factory to create new instances
 * @returns a wrapped factory that returns an existing instance for a target if
 * applicable, and delegates to the actual factory otherwise
 */
export declare function createInjectiveInstanceFactory<Factory extends (target: any, ...args: any[]) => any>(factory: Factory): Factory;
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