/**
 * Global promise store allowing user-provided promises
 * @public
 */
export declare class PromiseProvider {
    /** Validates the passed in promise library */
    static validate(lib: unknown): lib is PromiseConstructor;
    /** Sets the promise library */
    static set(lib: PromiseConstructor): void;
    /** Get the stored promise library, or resolves passed in */
    static get(): PromiseConstructor;
}
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