type KeyInput = string | Uint8Array;
export declare class PrivateEntryHandle<T> {
    private readonly key;
    constructor(key: KeyInput);
    get(): T | null;
    set(value: T): void;
    remove(): boolean;
    getOrInit(initialiser: () => T): T;
    getOrDefault(defaultValue: T): T;
    modify(mutator: (value: T) => void, initialiser: () => T): T;
}
export declare function createPrivateEntry<T>(key: KeyInput): PrivateEntryHandle<T>;
export {};
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